1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
4911
4912
4913
4914
4915
4916
4917
4918
4919
4920
4921
4922
4923
4924
4925
4926
4927
4928
4929
4930
4931
4932
4933
4934
4935
4936
4937
4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948
4949
4950
4951
4952
4953
4954
4955
4956
4957
4958
4959
4960
4961
4962
4963
4964
4965
4966
4967
4968
4969
4970
4971
4972
4973
4974
4975
4976
4977
4978
4979
4980
4981
4982
4983
4984
4985
4986
4987
4988
4989
4990
4991
4992
4993
4994
4995
4996
4997
4998
4999
5000
5001
5002
5003
5004
5005
5006
5007
5008
5009
5010
5011
5012
5013
5014
5015
5016
5017
5018
5019
5020
5021
5022
5023
5024
5025
5026
5027
5028
5029
5030
5031
5032
5033
5034
5035
5036
5037
5038
5039
5040
5041
5042
5043
5044
5045
5046
5047
5048
5049
5050
5051
5052
5053
5054
5055
5056
5057
5058
5059
5060
5061
5062
5063
5064
5065
5066
5067
5068
5069
5070
5071
5072
5073
5074
5075
5076
5077
5078
5079
5080
5081
5082
5083
5084
5085
5086
5087
5088
5089
5090
5091
5092
5093
5094
5095
5096
5097
5098
5099
5100
5101
1
00:00:00,000 --> 00:00:10,792

2
00:00:10,792 --> 00:00:11,750
DAVID Malan: Tout dwa.

3
00:00:11,750 --> 00:00:13,630
Sa a se CS50.

4
00:00:13,630 --> 00:00:15,950
Lè sa a se kòmansman an nan semèn sèt.

5
00:00:15,950 --> 00:00:19,120
Se konsa, jounen jodi a, petèt Erezman,
nou kòmanse tranzisyon nou an

6
00:00:19,120 --> 00:00:21,630
soti nan nivo ki pi ba
mond nan C pwogramasyon

7
00:00:21,630 --> 00:00:24,290
li nan yon nivo a pi wo
mond nan pwogram entènèt.

8
00:00:24,290 --> 00:00:28,060
Se avèk ke, nou pral pran yon gade
nan egzakteman ki jan entènèt la ap travay,

9
00:00:28,060 --> 00:00:31,920
sa machin sa yo ak sa yo entèrne
ke ou ve yo te lè l sèvi avèk pou ane kounye a

10
00:00:31,920 --> 00:00:35,090
aktyèlman fè anba kapo a nan direksyon
yon pi bon konprann nan ki jan li tout

11
00:00:35,090 --> 00:00:37,660
travay, ak ki jan ou kapab
fè li travay pou ou.

12
00:00:37,660 --> 00:00:41,480
>> Nan direksyon sa fini, poukisa pa nou pran yon
gade premye nan yon clip soti nan yon pwogram nan televizyon

13
00:00:41,480 --> 00:00:45,680
rele Numb3rs, ki pral jwenn nou te kòmanse
kòm nan egzakteman ki jan entènèt la travay.

14
00:00:45,680 --> 00:00:46,964

15
00:00:46,964 --> 00:00:47,630
[Lèktur VIDEO]

16
00:00:47,630 --> 00:00:49,858
-Li Se yon adrès 32-ti jan IPP4.

17
00:00:49,858 --> 00:00:50,794
-IP.

18
00:00:50,794 --> 00:00:51,730
Sa a entènèt la.

19
00:00:51,730 --> 00:00:52,640
>> Pwive rezo-a.

20
00:00:52,640 --> 00:00:53,865
Li nan rezo prive Amita la.

21
00:00:53,865 --> 00:01:06,635

22
00:01:06,635 --> 00:01:08,120
Oh, li nan tèlman dwòl.

23
00:01:08,120 --> 00:01:09,605

24
00:01:09,605 --> 00:01:11,120
>> -Tanpri, Charlie.

25
00:01:11,120 --> 00:01:12,640
>> -Li La yon adrès glas IP.

26
00:01:12,640 --> 00:01:15,672
Li nan kite nou gade sa
li te fè nan tan reyèl.

27
00:01:15,672 --> 00:01:16,505
[Lèktur videyo END]

28
00:01:16,505 --> 00:01:19,570
DAVID Malan: Se konsa, gen nan yon antye
anpil nan mal ak sa pwogram nan televizyon.

29
00:01:19,570 --> 00:01:23,250
Se konsa, kite a toumante apa egzakteman
youn nan premye bagay sa yo sa yo

30
00:01:23,250 --> 00:01:25,210
ak wè si nou pa ka vlope
lespri nou fè wonn li.

31
00:01:25,210 --> 00:01:28,110
Se konsa, ankadreman an sot pase a nan
ki fim, nan ki montre

32
00:01:28,110 --> 00:01:30,360
se yon sèl sa a isit la, ki
sanble yo sijere ke sa a

33
00:01:30,360 --> 00:01:33,300
se sa ki gen kèk aker ap itilize ap itilize
jwenn nan kèk sistèm.

34
00:01:33,300 --> 00:01:33,875
>> Men, pa gen okenn.

35
00:01:33,875 --> 00:01:36,030
Si ou rale nan sou sa a
kòd sous, ki

36
00:01:36,030 --> 00:01:40,210
se yon lang yo rele Objektif C nan
ki apps iPhone, apps iPad, ak Mac

37
00:01:40,210 --> 00:01:42,060
Apps OS yo ekri,
ou pral wè ke sa a

38
00:01:42,060 --> 00:01:45,400
se pou kèk sòt de pwogram desen
ki gen yon kreyon koulè kòm yon varyab.

39
00:01:45,400 --> 00:01:47,800

40
00:01:47,800 --> 00:01:51,880
>> Se konsa, Anplis de sa, ou ta ka
remake gen adrès sa a isit la.

41
00:01:51,880 --> 00:01:53,330
Koulye a, sa a se yon jan mal.

42
00:01:53,330 --> 00:01:56,740
Lè sa a se pwobableman fè espre chwazi
yo dwe genyen yon adrès valab konsa ke li

43
00:01:56,740 --> 00:02:00,010
pa aktyèlman mennen yon kote
si yon visualiseur televizyon aktyèlman vizite li.

44
00:02:00,010 --> 00:02:02,620
Men, nimewo sa a isit la,
yon bagay dot yon bagay

45
00:02:02,620 --> 00:02:05,799
dot dot yon bagay yon bagay ki sa ki nan
jeneralman li te ye tankou yon adrès IP.

46
00:02:05,799 --> 00:02:07,840
Epi li la aktyèlman yon bon
seg sijè sa a plis

47
00:02:07,840 --> 00:02:10,930
jeneralman, yo konnen kòm
IP, pwotokòl entènèt.

48
00:02:10,930 --> 00:02:14,210
Se konsa, ou te pwobableman omwen
tande fraz sa a anvan.

49
00:02:14,210 --> 00:02:18,980
Men, sa ki IP, oswa entènèt
pwotokòl jan ou konprann li jodi a?

50
00:02:18,980 --> 00:02:21,376

51
00:02:21,376 --> 00:02:23,625
Chans yo se, si nou mande pou yon
montre nan men, pi fò nan ou

52
00:02:23,625 --> 00:02:26,880
te pwobableman gen te di nan
mo adrès IP anvan.

53
00:02:26,880 --> 00:02:27,955
Se konsa, sa ou te vle di?

54
00:02:27,955 --> 00:02:29,578

55
00:02:29,578 --> 00:02:30,779
>> ODYANS: [fèbl]?

56
00:02:30,779 --> 00:02:31,820
DAVID Malan: Ki sa ki nan sa?

57
00:02:31,820 --> 00:02:33,170
ODYANS: [fèbl]?

58
00:02:33,170 --> 00:02:33,455
DAVID Malan: Yon fwa plis.

59
00:02:33,455 --> 00:02:34,840
ODYANS: Adrès nan òdinatè a.

60
00:02:34,840 --> 00:02:35,950
DAVID Malan: nan
adrès nan òdinatè a.

61
00:02:35,950 --> 00:02:36,949
Se konsa, sa a, se egzakteman dwa.

62
00:02:36,949 --> 00:02:39,660
Li sanble ke chak
òdinatè sou entènèt la,

63
00:02:39,660 --> 00:02:42,940
ak jou sa yo, chak telefòn nan ou
pòch ak grenn nan valiz lekòl ou a,

64
00:02:42,940 --> 00:02:45,880
gen yon adrès IP, entènèt
adrès pwotokòl, ki

65
00:02:45,880 --> 00:02:49,379
se yon adrès inik ki idantifye
li pandan tout entènèt la.

66
00:02:49,379 --> 00:02:51,920
Koulye a, sa a, se yon ti jan nan yon blan
kouche paske mond lan nan aktyèlman

67
00:02:51,920 --> 00:02:53,240
kouri soti nan adrès IP.

68
00:02:53,240 --> 00:02:55,900
>> Se konsa, nou te kòmanse lè l sèvi avèk
adrès IP prive.

69
00:02:55,900 --> 00:02:57,160
Men, plis sou sa nan yon moman.

70
00:02:57,160 --> 00:03:00,731
Men, ou ka panse a yon adrès IP
kòm tankou lari yo sèvis lapòs ou

71
00:03:00,731 --> 00:03:01,230
adrès.

72
00:03:01,230 --> 00:03:04,160
Nou te itilize egzanp lan nan Maxwell
Dworkin, bilding lan CS, anvan

73
00:03:04,160 --> 00:03:07,920
33 Oxford Street Cambridge,
Mass, 02138, Etazini.

74
00:03:07,920 --> 00:03:10,400
Sa se adrès inik li nan mond lan.

75
00:03:10,400 --> 00:03:12,547
>> Menm jan an tou fè òdinatè
gen adrès inik.

76
00:03:12,547 --> 00:03:14,380
Yo jis rive
gade yon ti kras different-

77
00:03:14,380 --> 00:03:17,219
yon PO dot yon dot nimewo
yon PO dot yon nimewo.

78
00:03:17,219 --> 00:03:19,760
Epi nenpòt moun ki aktyèlman konnen
sa seri a valab nan nimewo

79
00:03:19,760 --> 00:03:21,105
se pou chak nan sa yo achaj?

80
00:03:21,105 --> 00:03:21,604
Yeah.

81
00:03:21,604 --> 00:03:23,045
>> ODYANS: 0 a 255?

82
00:03:23,045 --> 00:03:23,920
DAVID Malan: Egzakteman.

83
00:03:23,920 --> 00:03:25,450
0 a 255.

84
00:03:25,450 --> 00:03:28,360
E menm si ou pa t 'konnen
ki, kounye a trase yon konklizyon,

85
00:03:28,360 --> 00:03:31,130
konbyen Bits yo itilize reprezante
chak nan nimewo sa yo lè sa a?

86
00:03:31,130 --> 00:03:32,232

87
00:03:32,232 --> 00:03:34,440
Uit aparamman paske nan
pi wo a ou ka konte

88
00:03:34,440 --> 00:03:36,720
se 255, sa a, se yon valè 8-bit.

89
00:03:36,720 --> 00:03:38,980
Se konsa, nan total, yon adrès IP se 32-miyèt moso.

90
00:03:38,980 --> 00:03:41,310
Se konsa, vit voye nan
konklizyon matematik,

91
00:03:41,310 --> 00:03:43,900
ki jan anpil posib adrès IP
ki genyen nan mond lan, lè sa a?

92
00:03:43,900 --> 00:03:46,990

93
00:03:46,990 --> 00:03:50,100
>> Se konsa, sa a, se plis 8 8 8 plis
plis 8, se konsa sa a, se 32 miyèt moso.

94
00:03:50,100 --> 00:03:52,490
E nou te toujou di ke
2 a 32 an se apeprè?

95
00:03:52,490 --> 00:03:53,940

96
00:03:53,940 --> 00:03:54,440
OK.

97
00:03:54,440 --> 00:03:55,273
Mwen pral jaden sa a youn.

98
00:03:55,273 --> 00:03:55,864
Kat milya dola.

99
00:03:55,864 --> 00:03:58,780
Apre sa, nou te pale osijè de ke nan semèn
zewo lè nou te pale osijè de liv telefòn

100
00:03:58,780 --> 00:04:00,170
ak nimewo fou nan paj.

101
00:04:00,170 --> 00:04:03,450
Men, sòt nan nan li se ke gen nan
yon nimewo fini nan adrès IP.

102
00:04:03,450 --> 00:04:05,740
E menm si kat milya dola
ta ka sanble tankou yon anpil,

103
00:04:05,740 --> 00:04:07,770
nou moun yo te
konsome byen yon kèk

104
00:04:07,770 --> 00:04:10,350
nan yo pou tout moun nan serveurs nou an
ak aparèy ak pou fè.

105
00:04:10,350 --> 00:04:12,170
>> Se konsa, sa se aktyèlman vin tounen yon pwoblèm.

106
00:04:12,170 --> 00:04:16,500
Koulye a, gen gen tandans ka yon
konplo dèyè ki gen sa IP.

107
00:04:16,500 --> 00:04:18,560
Pou egzanp, anpil nan
òdinatè yo nan Harvard

108
00:04:18,560 --> 00:04:21,810
gen adrès inik ki kòmanse
ak youn nan de valè sa yo.

109
00:04:21,810 --> 00:04:23,560
MIT, Menm jan an tou, te gen yon prefiks.

110
00:04:23,560 --> 00:04:26,889
Ak yon anpil nan konpayi ak inivèsite
gen pwòp prefiks inik yo.

111
00:04:26,889 --> 00:04:29,680
Lè sa a, pi fò nan nou pou kay nou an
koneksyon entènèt ak renmen an,

112
00:04:29,680 --> 00:04:33,575
nou pataje kèk prefiks ki Comcast
oswa yon moun tankou sa k ap pase nan posede.

113
00:04:33,575 --> 00:04:36,640
Lè sa a se sèlman nan di ke si ou
gade pi òdinatè sou lakou lekòl la,

114
00:04:36,640 --> 00:04:40,070
yo ta pwobableman gen yon IP
adrès ki sanble tankou sa a.

115
00:04:40,070 --> 00:04:43,180
>> Koulye a, ou ta ka tou detanzantan wè
yon adrès IP li kòmanse tankou sa a.

116
00:04:43,180 --> 00:04:46,150
An reyalite, si nenpòt nan ou te grandi
ki gen aksè entènèt nan kay la,

117
00:04:46,150 --> 00:04:49,270
epi ou te tout tan tout tan ase
teknikman kirye yo pike alantou

118
00:04:49,270 --> 00:04:51,800
anviwònman pwòp òdinatè w lan,
pwobableman ou olye pou

119
00:04:51,800 --> 00:04:56,990
te wè yon adrès ki sanble pi plis tankou
sa a, ki te kòmanse ak 10, oswa 172,6,

120
00:04:56,990 --> 00:05:00,480
oswa 192,168, oswa kèk varyant ladan l '.

121
00:05:00,480 --> 00:05:04,025
>> Epi ki jis vle di ke mond lan
se mete sou kote yon pakèt antye nan nimewo

122
00:05:04,025 --> 00:05:06,400
yo dwe prive, ki vle di
ou ka sèvi ak yo nan kay ou,

123
00:05:06,400 --> 00:05:08,941
ou ka menm sèvi ak yo sou ou
lakou lekòl la ak nan konpayi ou,

124
00:05:08,941 --> 00:05:10,970
men ou pa ka sèvi ak yo
sou entènèt la nan gwo.

125
00:05:10,970 --> 00:05:13,320
>> Se konsa, sa yo prive
ONSÈY yo te yon solisyon

126
00:05:13,320 --> 00:05:16,990
nan direksyon fè si ke omwen se konsa
lwen ke lemonn antye se konsène,

127
00:05:16,990 --> 00:05:18,890
nou pa ap lè l sèvi avèk ke anpil adrès IP.

128
00:05:18,890 --> 00:05:22,840
Men, nan omwen, nou kapab, sou pwòp nou
lakou lekòl la yo, yo gen bèl anpil kòm anpil ONSÈY

129
00:05:22,840 --> 00:05:23,590
jan nou vle.

130
00:05:23,590 --> 00:05:24,410
Men, moun ki gen sousi?

131
00:05:24,410 --> 00:05:28,500
Ki sa ki nan enpòtans a nan tout bagay sa yo
nan yon itilizasyon aktyèl la nan entènèt la?

132
00:05:28,500 --> 00:05:31,450
>> Oke, kite la pran yon gade nan
petèt yon foto senp isit la.

133
00:05:31,450 --> 00:05:33,550
Kite m 'nan tou de nan
sa yo moute sou ekran an.

134
00:05:33,550 --> 00:05:36,050
Padonnen ekriti m 'isit la.

135
00:05:36,050 --> 00:05:39,500
Men, si nou panse a tèt nou kòm
ke yo te sa a ti kras isit la laptop

136
00:05:39,500 --> 00:05:41,830
yon kote sou lakou lekòl la,
jou sa yo li gen Wi-Fi.

137
00:05:41,830 --> 00:05:44,180
>> Men, nan pase ak si
ou jwenn adaptè a dwat,

138
00:05:44,180 --> 00:05:47,420
li ka gen yon Ethernet kab
ki ta Menm jan an tou kite

139
00:05:47,420 --> 00:05:49,130
ou konekte nan kèk kalite aparèy.

140
00:05:49,130 --> 00:05:51,090
Epi ou ka rele sa a
nenpòt ki kantite bagay sa yo.

141
00:05:51,090 --> 00:05:55,930
Men, mwen pral ale pi devan epi rele sa a,
pou kounye a, ki jan sou yon pwen aksè?

142
00:05:55,930 --> 00:05:57,690
>> Se konsa, sa a se laptop mwen.

143
00:05:57,690 --> 00:06:01,130
Sa a se kou avanse AP mwen, oswa pwen aksè,
ak sa a se kèk aparèy san fil,

144
00:06:01,130 --> 00:06:04,400
pa kontrèman ak sa yo ki Harvard
gen tout lòt peyi sou plafon yo

145
00:06:04,400 --> 00:06:07,420
ak mi yo bò kote lakou lekòl la
ki gen kliyote limyè

146
00:06:07,420 --> 00:06:10,930
e ke yo se sa ki ou laptops
itilize yo pale wirelessly

147
00:06:10,930 --> 00:06:12,160
nan rès la nan rezo a.

148
00:06:12,160 --> 00:06:14,880
>> Se konsa, yon jan kanmenm laptop sa a ap pale
ke bagay sou miray la,

149
00:06:14,880 --> 00:06:16,540
nan sal la kote moun, oswa yon lòt kote.

150
00:06:16,540 --> 00:06:21,410
Koulye a, pandan se tan, pwen sa aksè se
konekte nan yon lòt bagay sou lakou lekòl la.

151
00:06:21,410 --> 00:06:24,810
Epi li la pwobableman yon bagay
li te ye tankou yon switch.

152
00:06:24,810 --> 00:06:27,690
Apre sa, yo gade yon anpil plis enteresan
pase jis dyagram bwat sa yo.

153
00:06:27,690 --> 00:06:29,760
>> Men, yon jan kanmenm, ke bagay la
konekte nan yon switch.

154
00:06:29,760 --> 00:06:31,900
Ak nan vire, yon jan kanmenm
se ke switch konekte

155
00:06:31,900 --> 00:06:35,890
nan yon aparèy sa a, se pwobableman yon
ti jan pi gwo, ki rele yon routeur.

156
00:06:35,890 --> 00:06:37,930
Epi lè sa a, pandan se tan,
Harvard se ki konekte

157
00:06:37,930 --> 00:06:41,210
entènèt la tout antye ki
nou pral trase kòm nwaj sa a isit la,

158
00:06:41,210 --> 00:06:43,850
via kèk nimewo nan fil kouran
oswa san fil teknoloji.

159
00:06:43,850 --> 00:06:46,670
>> Se konsa, gen nan yon anpil nan etap ant
m 'ak rès la nan mond lan.

160
00:06:46,670 --> 00:06:49,620
Ak tout bon, menm nan
foto sa a isit la,

161
00:06:49,620 --> 00:06:52,634
gen kèk lòt serveurs
oswa sèvis ki enplike.

162
00:06:52,634 --> 00:06:54,800
Apre sa, mwen jis ale nan trase
sa yo yon ti jan abstrè

163
00:06:54,800 --> 00:06:57,050
jis pou ke nou gen
akwonim yo devan nou.

164
00:06:57,050 --> 00:06:57,993
>> Youn yo rele dkp.

165
00:06:57,993 --> 00:06:59,330

166
00:06:59,330 --> 00:07:03,440
Ak yon lòt yon sèl, yon ti kras plis
enteresan pou jodi a, yo rele dns.

167
00:07:03,440 --> 00:07:09,160
Se konsa, sa yo, se serveurs ki yon jan kanmenm
aksesib a òdinatè mwen kòm byen.

168
00:07:09,160 --> 00:07:10,910
Se konsa, kounye a, kite a toumante
apa yon ti jan nan jagon.

169
00:07:10,910 --> 00:07:13,410
Se konsa, pwen an aksè se
jis aparèy sa a san fil

170
00:07:13,410 --> 00:07:16,079
souvan avèk antèn ki aktyèlman
kite ou pale ak yon wirelessly.

171
00:07:16,079 --> 00:07:17,870
Nan lakay, ou ta ka rele
sa a routeur yon kay.

172
00:07:17,870 --> 00:07:21,550
Li ta ka dwe fèt pa Linksys, oswa Apple,
oswa D-Link, oswa nenpòt ki kantite konpayi yo.

173
00:07:21,550 --> 00:07:23,930
Sa, nan vire, se konekte
yon switch nan kèk sòt.

174
00:07:23,930 --> 00:07:28,287
Oswa tounen lakay ou, ki sa ki ou Wi-Fi
aparèy pwobableman ki konekte nan olye?

175
00:07:28,287 --> 00:07:30,370
Paske pwobableman ou pa fè sa
posede tout ekipman sa a.

176
00:07:30,370 --> 00:07:31,900

177
00:07:31,900 --> 00:07:32,400
Yeah.

178
00:07:32,400 --> 00:07:36,379
Modèm kab oswa DSL modem tounen lakay
ke ou te resevwa nan men Verizon, oswa Comcast,

179
00:07:36,379 --> 00:07:37,420
oswa yon sèl nan transpòtè sa yo.

180
00:07:37,420 --> 00:07:41,520
Se konsa, panse a tout nan konpleksite sa a
kòm sipòte yon inivèsite oswa reyèlman

181
00:07:41,520 --> 00:07:42,920
yon biznis tankou Comcast.

182
00:07:42,920 --> 00:07:44,690
E reyèlman, bagay la
sa a, se nan kay ou a

183
00:07:44,690 --> 00:07:46,800
se pwobableman sou bò sa a
nan kloti a plis petèt

184
00:07:46,800 --> 00:07:50,380
youn nan sa yo lakay route-- youn
sa yo se modèm kab oswa DSL

185
00:07:50,380 --> 00:07:51,720
modèm yo ta ka bay.

186
00:07:51,720 --> 00:07:55,650
>> Se konsa, yon switch se jis yon aparèy ki gen
yon pakèt antye nan done krik nan li.

187
00:07:55,650 --> 00:07:58,940
An reyalite, si ou sonje ke nouvèl
Rapò nou te jwe sou ekran an gwo

188
00:07:58,940 --> 00:08:01,930
yon koup la semèn de sa kote nou
te pale sou chòk koki,

189
00:08:01,930 --> 00:08:03,270
ak ki jan move sa a te?

190
00:08:03,270 --> 00:08:05,850
Epi te gen nan sa yo
foto nan câbles, ak krik,

191
00:08:05,850 --> 00:08:07,569
ak bagay sa yo ki gade teknik?

192
00:08:07,569 --> 00:08:10,360
Moun sa yo ki te jis switch bèbè ki
jis konekte òdinatè entènèt

193
00:08:10,360 --> 00:08:12,810
pa rakorde câbles nan yo.

194
00:08:12,810 --> 00:08:14,140
>> Se konsa, ki nan tout yon switch se.

195
00:08:14,140 --> 00:08:16,363
Koulye a, aparèy sa yo ka resevwa yon
ti kras plis enteresan.

196
00:08:16,363 --> 00:08:16,863
Dkp.

197
00:08:16,863 --> 00:08:17,846

198
00:08:17,846 --> 00:08:20,470
Si ou te poked alantou ou
òdinatè nan kay la oswa menm sou lakou lekòl la,

199
00:08:20,470 --> 00:08:21,845
ou ta ka gen pou wè akwonim sa a.

200
00:08:21,845 --> 00:08:24,480
nenpòt moun ki konnen ki sa yon sèvè dkp se?

201
00:08:24,480 --> 00:08:25,560

202
00:08:25,560 --> 00:08:27,360
Dinamik pwotokòl konfigirasyon lame?

203
00:08:27,360 --> 00:08:28,324

204
00:08:28,324 --> 00:08:30,490
Pa ki kalite bagay ou
reyèlman bezwen ekri desann.

205
00:08:30,490 --> 00:08:30,990
Dkp.

206
00:08:30,990 --> 00:08:32,480

207
00:08:32,480 --> 00:08:33,891
nenpòt moun ki nan tout?

208
00:08:33,891 --> 00:08:34,390
Tout dwa.

209
00:08:34,390 --> 00:08:35,520
Se konsa, kite a remonte istwa a.

210
00:08:35,520 --> 00:08:39,210
Si se istwa a isit la nan men rpoz
sou mwen gen yon adrès inik

211
00:08:39,210 --> 00:08:42,909
nan mond lan, yon adrès IP,
kote ki soti?

212
00:08:42,909 --> 00:08:44,640
Nan pase, lè
ou te gen yo lakou lekòl la,

213
00:08:44,640 --> 00:08:47,790
ou aktyèlman te gen mande yon moun nan
Harvard, sa ki ta dwe adrès IP mwen dwe.

214
00:08:47,790 --> 00:08:49,873
Epi ou ta manyèlman
tape l 'nan òdinatè w lan.

215
00:08:49,873 --> 00:08:53,770
Men, pi plis dènyèman, teknoloji
egziste ki pèmèt ou dynamique,

216
00:08:53,770 --> 00:08:58,460
Dkp, jwenn yon adrès IP tou senpleman lè
ou ploge nan lakou lekòl la wirelessly

217
00:08:58,460 --> 00:08:59,220
oswa avèk yon fil.

218
00:08:59,220 --> 00:09:03,800
Se konsa, sèvè dkp se jis yon sèvè
ki bay òdinatè w lan yon IP inik

219
00:09:03,800 --> 00:09:06,349
adrès, yon ti jan owaza
oswa atravè kèk algorithm.

220
00:09:06,349 --> 00:09:08,390
Men, si ou panse tounen yon
kèk semèn oswa yon kèk ane,

221
00:09:08,390 --> 00:09:10,670
lè w ou fèk anrejistre
òdinatè w lan sou lakou lekòl la,

222
00:09:10,670 --> 00:09:13,957
ou te di Harvard, otorize
m ', ban m' yon adrès IP.

223
00:09:13,957 --> 00:09:15,915
Koulye a, dn kòmanse yo ka resevwa yon
ti kras plis enteresan.

224
00:09:15,915 --> 00:09:17,050

225
00:09:17,050 --> 00:09:18,940
Domèn Non sistèm.

226
00:09:18,940 --> 00:09:21,970
nenpòt moun ki vle pran yon koud
nan sa ki bagay sa a se isit la?

227
00:09:21,970 --> 00:09:26,195
>> Li nan youn oswa plis serveurs ki
fè yon travay san patipri ki senp sa a, se

228
00:09:26,195 --> 00:09:26,945
kalite enpòtan.

229
00:09:26,945 --> 00:09:30,150

230
00:09:30,150 --> 00:09:31,130
Yeah.

231
00:09:31,130 --> 00:09:33,810
>> ODYANS: tradui URL [fèbl].

232
00:09:33,810 --> 00:09:34,560
DAVID Malan: Yeah.

233
00:09:34,560 --> 00:09:38,970
Li tradui URL IP
adrès ak vis vèrsa.

234
00:09:38,970 --> 00:09:41,310
Konsidere, apre tout, ki
lè ou ale sou sit entènèt la,

235
00:09:41,310 --> 00:09:46,200
ou tape nan yon bagay tankou facebook.com,
oswa google.com, oswa harvard.edu,

236
00:09:46,200 --> 00:09:50,620
ou sètènman pa janm te tape
gen plis chans yon adrès nimerik IP.

237
00:09:50,620 --> 00:09:52,490
>> Epi ou ka panse a rezon an pou kisa.

238
00:09:52,490 --> 00:09:54,910
Retounen nan jou a, menm
kounye a nan yon sèten mezi,

239
00:09:54,910 --> 00:09:58,030
lè ou fè yon telefòn
rele nan yon konpayi,

240
00:09:58,030 --> 00:10:02,275
yo te reyèlman eseye anpil yo achte tèt yo
yon nimewo 800 ki aktyèlman gen pawòl

241
00:10:02,275 --> 00:10:06,140
nan li, tankou 1-800-kolekte oswa yon bagay
sa a, se memorab tankou sa pou ke

242
00:10:06,140 --> 00:10:10,692
moun yo pa gen a sonje sa
C-O-L-L-E-C-T aktyèlman ogmante.

243
00:10:10,692 --> 00:10:12,400
Se konsa, nou te wè sa a
eristik nan tan lontan an.

244
00:10:12,400 --> 00:10:15,720
Ak tout bon, se sa ki adrès IP
ak sa nou pral rele non lame

245
00:10:15,720 --> 00:10:18,120
oswa konplètman kalifye
non domèn fè pou nou.

246
00:10:18,120 --> 00:10:22,610
Li pèmèt nou serveurs adrès
pa mo olye pou yo nimewo.

247
00:10:22,610 --> 00:10:24,560
Se konsa, kouman fè nou aktyèlman
wè konvèsyon sa a.

248
00:10:24,560 --> 00:10:26,393
Mwen pral ale pi devan
epi louvri moute yon pwogram.

249
00:10:26,393 --> 00:10:26,975

250
00:10:26,975 --> 00:10:29,350
Mwen jis pral ale pi devan
epi louvri moute yon fenèt tèminal.

251
00:10:29,350 --> 00:10:31,933
Men, mwen pral ale pi devan epi
montre w ki sa yon sèvè dn fè.

252
00:10:31,933 --> 00:10:35,700
Pou egzanp, si mwen te vle wè
sa adrès la IP se nan Facebook,

253
00:10:35,700 --> 00:10:37,720
Mwen ka tape nan yon tèminal
pouse tankou this--

254
00:10:37,720 --> 00:10:40,010
epi ou ka fè sa a menm
andedan nan aparèy ou yo.

255
00:10:40,010 --> 00:10:41,595
Epi sa a, Passage facebook.com.

256
00:10:41,595 --> 00:10:43,220

257
00:10:43,220 --> 00:10:44,500
>> Apre sa, mwen wè yon pakèt moun sou bagay sa yo.

258
00:10:44,500 --> 00:10:48,097
Repons premye Sa a se
Sèvè dns Harvard la

259
00:10:48,097 --> 00:10:49,930
foto ki ki Mwen te
trase la. --that a

260
00:10:49,930 --> 00:10:54,300
di m 'ke IP Facebook a
adrès se aparamman sa a.

261
00:10:54,300 --> 00:10:58,650
Se konsa, kite m 'ale pi devan epi
kopi ki 173.252.120.16.

262
00:10:58,650 --> 00:11:00,960
Ak kite m 'louvri moute Chrome sou Mac mwen.

263
00:11:00,960 --> 00:11:06,690
Ak kite m 'ale nan http: // ak keratin
ki adrès IP nan ak frape Mete.

264
00:11:06,690 --> 00:11:08,950
>> Ak tout bon, mwen jwenn mwen nan Facebook.

265
00:11:08,950 --> 00:11:11,090
Se konsa, yon jan kanmenm ki konvèsyon,
tout bon, ki te pase.

266
00:11:11,090 --> 00:11:15,314
Men, si mwen fè sa ankò, se pou yo
fè nsloukeup, www.google.com.

267
00:11:15,314 --> 00:11:17,302
Mwen jwenn tounen yon pakèt antye nan repons.

268
00:11:17,302 --> 00:11:20,010
Ak tout bon, gen nan diferan fason
ke konpayi aplike sa a.

269
00:11:20,010 --> 00:11:22,440
Pafwa, yo di mond lan
yo gen yon sèl IP adrès.

270
00:11:22,440 --> 00:11:25,824
>> Men, vin ke adrès IP yon sèl rezoud
oswa trase nan serveurs miltip.

271
00:11:25,824 --> 00:11:27,740
Oswa nan ka a nan Google,
yo di mond lan,

272
00:11:27,740 --> 00:11:29,510
nou gen yon pakèt antye nan adrès IP.

273
00:11:29,510 --> 00:11:33,910
Laptop ou se akeyi yo pale
kontakte nenpòt youn nan serveurs sa yo.

274
00:11:33,910 --> 00:11:36,200
Se konsa, nan tout sa a te ale
sou anba kapo a.

275
00:11:36,200 --> 00:11:40,830
>> Lè ou tape nan www.google.com Antre
nan navigatè ou a, navigatè ou a,

276
00:11:40,830 --> 00:11:46,180
ak nan vire opere ou, Mac
Eksplwatasyon, oswa Windows, oswa Ubuntu Linux,

277
00:11:46,180 --> 00:11:51,010
mande sèvè a dns ki tou pre, ki sa ki
adrès aktyèl la nan sa a sèvè.

278
00:11:51,010 --> 00:11:54,330
Paske aparèy ki sot pase a
nan foto sa a, yon routeur,

279
00:11:54,330 --> 00:11:57,840
se youn nan ki gen rezon an
lavi a se nan enfòmasyon wout,

280
00:11:57,840 --> 00:12:01,150
wout pakè se konsa pale,
anvlòp nan enfòmasyon dijital

281
00:12:01,150 --> 00:12:06,320
ki gen zero ak moun yo soti nan
moun k nan destinasyon, ki soti nan orijin

282
00:12:06,320 --> 00:12:07,200
reseptè.

283
00:12:07,200 --> 00:12:09,760
>> Se konsa, yon bagay wout routeur.

284
00:12:09,760 --> 00:12:13,000
Se konsa, poukisa se sa a tout
patikilyèman enpòtan?

285
00:12:13,000 --> 00:12:16,000
Oke, kite a pran yon gade
nan ki jan sa a ta ka dwe itilize.

286
00:12:16,000 --> 00:12:21,600
Sipoze ke mwen gen isit la
yon foto nan Rob bodèn.

287
00:12:21,600 --> 00:12:22,690

288
00:12:22,690 --> 00:12:25,150
Se konsa, ta kwè ke mwen vle
voye foto sa a nan Rob bodèn

289
00:12:25,150 --> 00:12:27,530
nan Dann nan do a
nan sal la konferans.

290
00:12:27,530 --> 00:12:29,976
>> Se konsa, mwen menm ki yon òdinatè
tankou laptop mwen, lavil Dann

291
00:12:29,976 --> 00:12:31,600
se kèk lòt òdinatè sou entènèt la.

292
00:12:31,600 --> 00:12:34,380
Apre sa, mwen vle voye yon pake
nan enfòmasyon nan men m 'l' la.

293
00:12:34,380 --> 00:12:37,952
Sa amèn kesyon an, ki jan pou m
aktyèlman wout pake l 'sa.

294
00:12:37,952 --> 00:12:40,660
Oke, an tèm imen, mwen ta ka di,
hey, ka ou pase sa a nan lavil Dann?

295
00:12:40,660 --> 00:12:42,826
>> Epi lè sa a, yon pakèt moun sou ou
ta pwobableman pase l tounen

296
00:12:42,826 --> 00:12:45,890
ak lide dèyè, yo soti jouk
evantyèlman fè wout li sou nan lavil Dann.

297
00:12:45,890 --> 00:12:47,700
Men, sa a yon ti kras enpresizyon.

298
00:12:47,700 --> 00:12:50,370
Odinatè pwobableman bezwen
gen yon ti kras pi plis metodik.

299
00:12:50,370 --> 00:12:53,190
Se konsa, pwobableman, Dann gen yon adrès IP.

300
00:12:53,190 --> 00:12:57,190
Se konsa, sa ki vrèman mwen ta dwe fè se mwen ta dwe
pran, pou egzanp, yon anvlòp vid

301
00:12:57,190 --> 00:12:58,140
tankou sa a.

302
00:12:58,140 --> 00:13:00,130
Apre sa, mwen pa konnen ki sa
Adrès Dann lan IP se.

303
00:13:00,130 --> 00:13:04,300
>> Se konsa, mwen jis ale nan
jeneralizasyon li kòm IP Dann lan.

304
00:13:04,300 --> 00:13:07,511
Apre sa, mwen pral mete sa a nan
nan jaden an nan anvlòp mwen.

305
00:13:07,511 --> 00:13:09,010
Ak pandan se tan, mwen gen yon adrès IP.

306
00:13:09,010 --> 00:13:10,610
Li pa enpòtan jodi a sa li ye.

307
00:13:10,610 --> 00:13:15,130
Se konsa, mwen jis pral di mwen
IP nan kwen an laba a.

308
00:13:15,130 --> 00:13:19,350
Epi lè sa a, mwen pral ale pi devan epi mete
foto sa a andedan nan anvlòp sa a.

309
00:13:19,350 --> 00:13:22,800
>> Epi lè sa a, chak nan nou, prezimableman,
kòm routeurs sou entènèt la,

310
00:13:22,800 --> 00:13:25,470
yo te prekonfigure pa
lèzòm jeneralman oswa pafwa

311
00:13:25,470 --> 00:13:29,854
pa algoritm otomatik konnen ke
si adrès Dann lan IP kòmanse ak yon 1,

312
00:13:29,854 --> 00:13:30,770
li ta dwe ale ki fason.

313
00:13:30,770 --> 00:13:33,300
Si adrès la Dann IP kòmanse ak
yon 2, li ta dwe ale ki fason.

314
00:13:33,300 --> 00:13:34,450
Petèt yon 3 ale fason sa a.

315
00:13:34,450 --> 00:13:35,575
Petèt yon 4 ale fason sa a.

316
00:13:35,575 --> 00:13:36,700
Epi sa a, yon ti kras tro.

317
00:13:36,700 --> 00:13:38,670
Senplist men sa a lide la an jeneral.

318
00:13:38,670 --> 00:13:42,370
Chak nan routers-- sa yo epi gen ta ka
gen kòm anpil 30 ant mwen menm ak lavil Dann.

319
00:13:42,370 --> 00:13:45,140
--have kèk kalite calcul
andedan nan memwa yo,

320
00:13:45,140 --> 00:13:49,070
yon tab baz done, ki jis di,
IP adrès ki sanble tankou sa a,

321
00:13:49,070 --> 00:13:49,730
ale nan fason sa.

322
00:13:49,730 --> 00:13:51,960
Yon adrès IP ki sanble
tankou sa a, ale fason sa a.

323
00:13:51,960 --> 00:13:54,750
Epi sa a, li montre kouman li fè
desizyon san patipri senplist.

324
00:13:54,750 --> 00:13:59,440
>> Men, li vire soti ke routeurs sa yo fè
yon bagay plis pase sa, potansyèlman.

325
00:13:59,440 --> 00:14:03,550
Yo pèmèt òdinatè
garanti livrezon, omwen

326
00:14:03,550 --> 00:14:05,000
ak gwo pwobablite.

327
00:14:05,000 --> 00:14:08,340
Se konsa, ou ta ka, tou, te tande, menm si
ou te pa janm byen pran swen oswa sezi

328
00:14:08,340 --> 00:14:12,140
sa li ye, ou ta ka te tande
nan yon bagay pa akwonim sa a.

329
00:14:12,140 --> 00:14:15,500
Se pou nou tounen sou isit la pou
jis yon ti moman ak rale moute sa a.

330
00:14:15,500 --> 00:14:18,550
>> Tchp, pwotokòl kontwòl transmisyon.

331
00:14:18,550 --> 00:14:21,494
Yon lòt fason teknik nan jis
dekri yon lòt teknoloji

332
00:14:21,494 --> 00:14:22,660
ki nan itilize sou entènèt la.

333
00:14:22,660 --> 00:14:24,809
Se konsa, IP, pwotokòl entènèt
ki itilize pou adrese.

334
00:14:24,809 --> 00:14:27,100
Li kèk estanda ki nan
mond te vini ak ki te di,

335
00:14:27,100 --> 00:14:31,059
ou mete yon IP adrès isit la pou Dann lan,
ak youn IP adrès isit la pou tèt ou,

336
00:14:31,059 --> 00:14:33,100
ak Lè sa a ou mete kèk
enfòmasyon nan yon anvlòp.

337
00:14:33,100 --> 00:14:36,600
>> Men, tchp se yon lòt teknoloji,
itilize nan konjonksyon avèk IP.

338
00:14:36,600 --> 00:14:38,970
Ak tout bon, si ou te tout tan tout tan
wè akwonim sa yo anvan,

339
00:14:38,970 --> 00:14:42,110
ou te pwobableman wè
Tchp IP koupe ki jis

340
00:14:42,110 --> 00:14:43,900
vle di moun yo gen tandans sèvi ak yo ansanm.

341
00:14:43,900 --> 00:14:47,570
Oke, tchp se kalite
fre paske li pèmèt

342
00:14:47,570 --> 00:14:50,220
ou ogmante pwobabilite pou
ke done a se aktyèlman

343
00:14:50,220 --> 00:14:51,970
pral jwenn nan men m 'lavil Dann.

344
00:14:51,970 --> 00:14:54,080
>> An reyalite, entènèt la se yon kote fou.

345
00:14:54,080 --> 00:14:56,530
Gen nan pa gen garanti ke
si mwen voye done nan fason sa a

346
00:14:56,530 --> 00:14:58,530
ke li nan pral ale
fason sa a pwochen fwa alantou.

347
00:14:58,530 --> 00:14:59,905
Li ta ka al fè wout ki oswa ki fason.

348
00:14:59,905 --> 00:15:02,680
Distans ki pi kout ant
de pwen se pa nesesèman

349
00:15:02,680 --> 00:15:04,860
yon dwat oswa liy la menm.

350
00:15:04,860 --> 00:15:07,170
>> Anplis, kèk nan nou
mesye ta ka fè erè

351
00:15:07,170 --> 00:15:09,780
oswa pou w jwenn akable ak twò
anvlòp anpil vini fason ou.

352
00:15:09,780 --> 00:15:10,940
Se konsa, ou jis ale nan
bay moute ak literalman

353
00:15:10,940 --> 00:15:13,050
gout kèk nan sa yo
anvlòp nan etaj la.

354
00:15:13,050 --> 00:15:16,930
Ak nan fason sa a menm ka gen done
tonbe sou entènèt la pa routeurs.

355
00:15:16,930 --> 00:15:18,680
Se konsa, a diminye a
chans nan sa a, mwen pral

356
00:15:18,680 --> 00:15:21,980
pran sekirite ti kras mwen
sizo isit la e li te koupe Rob

357
00:15:21,980 --> 00:15:26,140
nan, kite la di, kat
moso, kat segments.

358
00:15:26,140 --> 00:15:27,210

359
00:15:27,210 --> 00:15:33,350
>> Epi, koulye a, mwen pral ale pi devan epi
mete yon sèl pyès plis nan enfòmasyon

360
00:15:33,350 --> 00:15:34,610
sou anvlòp sa a.

361
00:15:34,610 --> 00:15:39,630
Mwen pral di yon bagay tankou, 1 nan 4.

362
00:15:39,630 --> 00:15:43,370
Se konsa, kounye a, anvlòp final mwen, nan
omwen premye a, sanble tankou sa a.

363
00:15:43,370 --> 00:15:45,500
Mwen pral ale pi devan
epi li mete yon sèl sa a nan isit la.

364
00:15:45,500 --> 00:15:47,070

365
00:15:47,070 --> 00:15:53,430
Epi pou dedomajman pou tan an, mwen pral
mete lejann sou lòt moun yo idantik kòm 2 nan 4,

366
00:15:53,430 --> 00:15:57,760
3 nan 4, 4 nan 4.

367
00:15:57,760 --> 00:16:02,170
>> Yon fwa ankò, ak adrès IP Dann la nan la
devan li epi ki gen adrès IP mwen

368
00:16:02,170 --> 00:16:06,660
sou do a kite, men mwen
pa ka voye yo jis ankò.

369
00:16:06,660 --> 00:16:08,930
Paske li vire soti
ki sou entènèt la,

370
00:16:08,930 --> 00:16:10,980
serveurs ka fè miltip bagay sa yo.

371
00:16:10,980 --> 00:16:14,300
An reyalite, nou tout ta ka sèvi ak entènèt la
byen yon ti jan, entènèt la atravè lemond,

372
00:16:14,300 --> 00:16:16,139
http: // kèlkeswa sa.

373
00:16:16,139 --> 00:16:17,930
Men, gen nan lòt
sèvis sou entènèt la.

374
00:16:17,930 --> 00:16:21,760
Ki lòt sèvis, sòt
nan itilizatè, sèvis konsomatè-zanmitay

375
00:16:21,760 --> 00:16:25,020
ke sezon prentan nan lide san konte
yon pwogram entènèt navigatè ki kalite?

376
00:16:25,020 --> 00:16:26,724

377
00:16:26,724 --> 00:16:27,390
ODYANS: Email.

378
00:16:27,390 --> 00:16:28,180
DAVID Malan: Email.

379
00:16:28,180 --> 00:16:28,410
OK.

380
00:16:28,410 --> 00:16:28,630
Bon.

381
00:16:28,630 --> 00:16:29,446
Ki sa ki nan yon lòt?

382
00:16:29,446 --> 00:16:30,070
ODYANS: Chat.

383
00:16:30,070 --> 00:16:32,780
DAVID Malan: Se konsa, chat, si wi ou non
li nan Skype, oswa Gchat, oswa yon bagay

384
00:16:32,780 --> 00:16:33,992
tankou sa.

385
00:16:33,992 --> 00:16:34,817
>> ODYANS: Depo.

386
00:16:34,817 --> 00:16:37,150
DAVID Malan: Se konsa, kèk kalite
sèvis depo, sètènman.

387
00:16:37,150 --> 00:16:39,004
Yon bagay tankou Dropbox,
oswa Box, oswa tankou an.

388
00:16:39,004 --> 00:16:40,920
Se konsa, gen nan diferan
sèvis sou entènèt la.

389
00:16:40,920 --> 00:16:44,090
Epi li vire soti ki Dann lan,
si li se vre yon òdinatè,

390
00:16:44,090 --> 00:16:46,520
pa gen yo dwe dedye
nan yon sèl bagay nan lavi a.

391
00:16:46,520 --> 00:16:49,650
Li ka aktyèlman fè miltip bagay sa yo.

392
00:16:49,650 --> 00:16:51,740
Ak tout bon, li kapab yon sèvè imel.

393
00:16:51,740 --> 00:16:53,270
Li kapab yon sèvè sit entènèt.

394
00:16:53,270 --> 00:16:55,120
Li kapab yon sèvè chat.

395
00:16:55,120 --> 00:16:57,600
>> Men, ki sanble yo sijere
ki Dann bezwen konnen

396
00:16:57,600 --> 00:17:01,010
nan avanse ki sa yo nan
sa nan mesaj sa yo.

397
00:17:01,010 --> 00:17:02,830
Èske sa se yon paj entènèt mwen voye l '?

398
00:17:02,830 --> 00:17:04,140
Èske li yon imèl mwen voye l '?

399
00:17:04,140 --> 00:17:05,930
Èske li yon moman
mesaj mwen voye l '?

400
00:17:05,930 --> 00:17:08,630
Se konsa, nou bezwen yon sèl pyès plis nan
enfòmasyon sou sa yo anvlòp

401
00:17:08,630 --> 00:17:10,930
se konsa ke Dann, lè li te
resevwa anvlòp sa a,

402
00:17:10,930 --> 00:17:13,119
konnen sa ki pwogram pou itilize pou montre li.

403
00:17:13,119 --> 00:17:14,200
>> Èske li yon navigatè?

404
00:17:14,200 --> 00:17:15,170
Èske li Google?

405
00:17:15,170 --> 00:17:16,170
Èske li Skype?

406
00:17:16,170 --> 00:17:19,760
Oubyen èske se pespektiv oswa kèk
lòt pwogram tout ansanm?

407
00:17:19,760 --> 00:17:23,740
Se konsa, ak tchp vini
jis yon konvansyon imen.

408
00:17:23,740 --> 00:17:26,930
Mond lan deside kèk ane
Anons sa pibliye depi asosye nonm antye inik

409
00:17:26,930 --> 00:17:28,520
ak sèvis sa yo ki pi popilè.

410
00:17:28,520 --> 00:17:31,920
>> Rele Pwotokòl Youn nan File Transfè,
Ftp, menm si li nan yon ti kras ki date kounye a.

411
00:17:31,920 --> 00:17:34,150
Men, idantifyan inik li yo se 21.

412
00:17:34,150 --> 00:17:39,020
SMTP pou sortant imel, inik li
idantifyan se 25 jis paske.

413
00:17:39,020 --> 00:17:43,616
Dns, bagay la nou te pale de pi bonè,
sèvi ak nimewo a 53 pou demann li yo.

414
00:17:43,616 --> 00:17:45,365
Menm jan ak ki sa ki IP la
adrès nan google.com?

415
00:17:45,365 --> 00:17:46,580

416
00:17:46,580 --> 00:17:49,790
>> Epi, koulye a, plis abitye nan ou
ta ka gen yon kote nan kèk pwen

417
00:17:49,790 --> 00:17:52,620
wè nimewo a 80 e petèt 443.

418
00:17:52,620 --> 00:17:55,822
Moun sa yo se inik nan
Idantifyan pou HTTP,

419
00:17:55,822 --> 00:17:57,530
ki se lang nan
nou pral byento wè itilize

420
00:17:57,530 --> 00:18:00,000
pou trafik entènèt ant
navigatè ak serveurs.

421
00:18:00,000 --> 00:18:02,740
Epi 443 se pou la
sekirite vèsyon ladan l '.

422
00:18:02,740 --> 00:18:05,530
>> Se konsa, yon dènye detay nan mwen se
pral mete sou anvlòp mwen an

423
00:18:05,530 --> 00:18:08,530
se ke mwen pa ale nan
voye sa a jis IP Dann lan.

424
00:18:08,530 --> 00:18:13,630
Mwen pral voye li nan di,
: 80, si sa m ap ap eseye voye

425
00:18:13,630 --> 00:18:16,862
l 'se yon paj entènèt, yon paj wèb
ki gen foto Rob bodèn la.

426
00:18:16,862 --> 00:18:19,320
Se konsa, mwen pral fè menm bagay la tou
Bagay sou lòt anvlòp sa yo.

427
00:18:19,320 --> 00:18:23,620
>> Lè sa a, finalman, mwen pral lage
sa yo koupe ak routeur la pi pre a,

428
00:18:23,620 --> 00:18:26,300
rekonèt ke ki
routeur ta ka pa nesesèman

429
00:18:26,300 --> 00:18:28,210
pran chemen an menm chak fwa.

430
00:18:28,210 --> 00:18:30,900
An reyalite, mwen ta ka gen nan
premye pake ale nan fason sa.

431
00:18:30,900 --> 00:18:32,670
Dezyèm pake ta ka ale fason sa a.

432
00:18:32,670 --> 00:18:34,250
Twazyèm packet-- kòmanse routage.

433
00:18:34,250 --> 00:18:35,420
--might ale sou isit la.

434
00:18:35,420 --> 00:18:36,440

435
00:18:36,440 --> 00:18:39,530
Ak nan theory-- pa kapab kenbe li.

436
00:18:39,530 --> 00:18:43,660
Nan teyori, tout kat nan pakè sa yo
ta dwe evantyèlman wout wout yo,

437
00:18:43,660 --> 00:18:46,940
sepandan avèk efikasite oswa ensufizaman,
tout wout la nan do an.

438
00:18:46,940 --> 00:18:51,560
>> Nan ki pwen, Dann, sou
resi, ka ransanble yo

439
00:18:51,560 --> 00:18:55,735
baze on-- bagay la komik se,
nou tout konnen ki sa a rezilta isit la

440
00:18:55,735 --> 00:18:56,360
a pwal.

441
00:18:56,360 --> 00:18:57,600
Dann ap pase yo ka resevwa yon foto nan Rob.

442
00:18:57,600 --> 00:18:58,974
Men, kite a wè ki jan sa a ap travay deyò.

443
00:18:58,974 --> 00:18:59,664

444
00:18:59,664 --> 00:19:02,080
Oke, olye, Dann k ap pase yo
jwenn yon pati nan yon foto nan Rob.

445
00:19:02,080 --> 00:19:04,286

446
00:19:04,286 --> 00:19:04,785
Li bon anpil.

447
00:19:04,785 --> 00:19:06,200

448
00:19:06,200 --> 00:19:07,580
Tout moun nan k ap patisipe jodi a.

449
00:19:07,580 --> 00:19:09,200

450
00:19:09,200 --> 00:19:09,910
Tout dwa.

451
00:19:09,910 --> 00:19:13,870
Se konsa, kòm Dann kòmanse resevwa sa yo
pakè, se pou yo mande yon kesyon.

452
00:19:13,870 --> 00:19:18,820
E si yonn nan nou vin parese,
twò chaje, move, oswa jis mache

453
00:19:18,820 --> 00:19:22,570
koupe, epi youn oswa plis nan nan
pake pa fè li nan lavil Dann?

454
00:19:22,570 --> 00:19:26,920
>> Kouman se Dann pral konnen li pa t '
resevwa youn nan segments yo nan kat la

455
00:19:26,920 --> 00:19:28,040
M 'te voye l'?

456
00:19:28,040 --> 00:19:30,040
Jis entwitif, sa nou kapab fè?

457
00:19:30,040 --> 00:19:30,540
Yeah?

458
00:19:30,540 --> 00:19:31,456
>> ODYANS: [fèbl].

459
00:19:31,456 --> 00:19:35,885

460
00:19:35,885 --> 00:19:36,760
DAVID Malan: Egzakteman.

461
00:19:36,760 --> 00:19:40,250
Paske mwen te inikman resansman yo, epi
Mwen te espesifye konbyen segments gen

462
00:19:40,250 --> 00:19:44,030
yo ta dwe li, li kapab dégager soti nan ke
ki, si genyen, nan segments yo

463
00:19:44,030 --> 00:19:45,070
li la aktyèlman disparèt.

464
00:19:45,070 --> 00:19:48,770
Ak sa ki tchp di òdinatè
fè, si òdinatè, tankou Mac OS,

465
00:19:48,770 --> 00:19:52,510
ak fenèt, ak Linux sipò
epi mwen konprann tchp, ki yo fè sa,

466
00:19:52,510 --> 00:19:57,010
Dokiman tchp la esansyèlman
di ke Dann yo ta voye m '

467
00:19:57,010 --> 00:20:00,580
yon mesaj tounen li di, hey, David,
Mwen manke Nimewo pake 1 nan 4,

468
00:20:00,580 --> 00:20:02,290
oswa 3 nan 4, kèlkeswa sa li ye.

469
00:20:02,290 --> 00:20:06,016
>> Epi lè sa a, travay mwen se pran
yon lòt foto nan Rob,

470
00:20:06,016 --> 00:20:09,140
ki nou gen depans siplemantè nan pou pita jodi a
si ou ta renmen pran yon sèl avèk ou,

471
00:20:09,140 --> 00:20:13,550
ak Lè sa a mwen ka ranvwaye segman ki
nan Rob tout wout la nan do an.

472
00:20:13,550 --> 00:20:16,380
>> Se konsa, kòm senplist kòm
sa a mekanis se, ki

473
00:20:16,380 --> 00:20:20,310
se sa k ap pase prèske nenpòt ki lè
ou fè yon bagay sou entènèt la,

474
00:20:20,310 --> 00:20:22,530
sitou pou sa yo
ki pi popilè nan sèvis yo.

475
00:20:22,530 --> 00:20:26,500
Gen lòt pwotokòl,
lòt teknoloji san konte tchp

476
00:20:26,500 --> 00:20:27,880
ki travay yon ti jan diferan.

477
00:20:27,880 --> 00:20:33,040
Men, se konsa anpil nan sèvis sa yo nou tipikman
itilize aktyèlman konte sou pwotokòl sa yo.

478
00:20:33,040 --> 00:20:35,720
>> Se konsa, lavil Dann, ou te jwenn nan
plen foto laba a?

479
00:20:35,720 --> 00:20:36,220
Wi.

480
00:20:36,220 --> 00:20:37,840
Nou te reasanble Rob nan do an.

481
00:20:37,840 --> 00:20:39,610
Mèsi anpil routeurs yo.

482
00:20:39,610 --> 00:20:43,260
Sipoze, mwen aktyèlman vle a
wè routeurs ki genyen ant m '

483
00:20:43,260 --> 00:20:46,400
ak MIT, anpil tankou ou nèg yo te
routeurs yo ant mwen menm ak lavil Dann.

484
00:20:46,400 --> 00:20:49,500
>> Oke, olye ke nsloukeup
pou sèvè Non Passage,

485
00:20:49,500 --> 00:20:53,150
Mwen ka olye tape wout tras, ki
se aktyèlman pral fè sa li di.

486
00:20:53,150 --> 00:20:55,240
Men, mwen pral fè ak
mòd trankil ak priz 1.

487
00:20:55,240 --> 00:20:57,448
Li se yon agiman liy lòd
ki jis di, eseye sa a

488
00:20:57,448 --> 00:20:58,740
yon fwa epi yo pa plizyè fwa.

489
00:20:58,740 --> 00:21:02,210
>> Epi, koulye a, mwen pral tape www.mit.edu.

490
00:21:02,210 --> 00:21:05,660
Koulye a, pwodiksyon an se
san patipri rapid ak skre.

491
00:21:05,660 --> 00:21:08,300
Men, sa ki nan pwòp sou sa a
se ke chak nan ranje sa yo

492
00:21:08,300 --> 00:21:10,750
esansyèlman reprezante yon
elèv nan odyans sa a

493
00:21:10,750 --> 00:21:13,870
si ou te chemen an ant mwen menm ak MIT.

494
00:21:13,870 --> 00:21:17,930
Kisa ou wè moute isit la, an premye, se
non an domèn ke mwen tape nan,

495
00:21:17,930 --> 00:21:20,500
oswa domèn konplètman kalifye
non kòm li a byen rele.

496
00:21:20,500 --> 00:21:24,420
>> Lè sa a aparamman se nan
IP adrès nan www.mit.edu.

497
00:21:24,420 --> 00:21:26,260
Òdinatè mwen kalkile ke soti pou mwen.

498
00:21:26,260 --> 00:21:29,170
Sa a isit la se yon pwomès
ke nou ap sèlman pral

499
00:21:29,170 --> 00:21:31,490
eseye rive nan MIT nan lespas 30 oublions.

500
00:21:31,490 --> 00:21:34,180
Gen pi bon dwe pa plis pase
30 elèv ant mwen menm ak lavil Dann.

501
00:21:34,180 --> 00:21:37,870
Epi, koulye a, yo chak nan ranje sa yo
reprezante literalman yon routeur

502
00:21:37,870 --> 00:21:40,280
ant mwen menm ak lavil Dann,
literalman youn nan ou guys.

503
00:21:40,280 --> 00:21:42,950
>> Se konsa, yon sèl sa a pa sanble
yo gen yon non, yon non domèn.

504
00:21:42,950 --> 00:21:44,150
Li jis gen yon IP.

505
00:21:44,150 --> 00:21:49,439
Epi li sèlman te pran 0,662 milisgond
yo ka resevwa nan men m 'ak sa yo ki premye routeur.

506
00:21:49,439 --> 00:21:51,230
Youn nan pwochen pa t '
ke anpil pi lwen lwen.

507
00:21:51,230 --> 00:21:53,560
Li sèlman pran yon sèl
milisgond yo ka resevwa gen.

508
00:21:53,560 --> 00:21:56,280
Epi, koulye a, Erezman, bagay sa yo
jwenn yon ti kras pi plis user-zanmitay

509
00:21:56,280 --> 00:21:58,860
ki gen non ki skre
men yon ti kras pi plis di.

510
00:21:58,860 --> 00:22:03,440
>> Sa a aparamman se yon routeur nan la
debaz nan rezo Harvard la loje,

511
00:22:03,440 --> 00:22:06,330
sèlman paske moun yo te di nou
sa a, nan Sant lan Syans, SC.

512
00:22:06,330 --> 00:22:11,720
Epi GW se jis yon notasyon steno pou
pòtay ki se yon synonym pou routeur.

513
00:22:11,720 --> 00:22:14,630
Se konsa, sa a se kèk sistèm
ekspozan fason administratè a

514
00:22:14,630 --> 00:22:17,230
nan nonmen youn nan serveurs yo
nan Sant lan Syans.

515
00:22:17,230 --> 00:22:20,360
>> Pandan se tan, ki sèvè se aparamman
ki konekte ak kèk kalite kab

516
00:22:20,360 --> 00:22:24,760
nan yon lòt routeur ki nan surnommé
pòtay lavil la fwontyè youn priz

517
00:22:24,760 --> 00:22:26,770
yon bagay, tou sa moun ki nimewo vle di.

518
00:22:26,770 --> 00:22:29,230
Lè sa a,, aparamman,
Harvard gen yon koneksyon

519
00:22:29,230 --> 00:22:31,340
sa a, se yon lòt milisgond
lwen nan yon bagay

520
00:22:31,340 --> 00:22:35,590
rele krwaze semen nan zòn nò yo
ki se yon pwen pirin komen

521
00:22:35,590 --> 00:22:38,430
ant kote gwo tankou Harvard
kote anpil nan kabl ale nan

522
00:22:38,430 --> 00:22:40,870
ak pèmèt konèksyon
nan mitan antite diferan.

523
00:22:40,870 --> 00:22:43,700
>> Etap sis, malerezman,
pa gen yon non ki valid.

524
00:22:43,700 --> 00:22:45,370
Ak etap sèt vin enteresan.

525
00:22:45,370 --> 00:22:46,820

526
00:22:46,820 --> 00:22:49,260
Mwen pa gen okenn lide ki sa pi fò nan sa yo vle di.

527
00:22:49,260 --> 00:22:50,875
Men, NY sote soti nan m '.

528
00:22:50,875 --> 00:22:52,375
Ak sa ki ki pwobableman siyifi?

529
00:22:52,375 --> 00:22:54,810

530
00:22:54,810 --> 00:22:56,520
Li pa menm teknik.

531
00:22:56,520 --> 00:22:57,400
Jis New York.

532
00:22:57,400 --> 00:23:00,510
Se konsa, tout bon, sa ki nan moun komen
konvansyon pa garanti

533
00:23:00,510 --> 00:23:04,730
men konvansyon komen se routeurs Non
pa nati nan lavil la oswa ayewopò a

534
00:23:04,730 --> 00:23:05,960
Kòd yo ke yo ap pi pre a.

535
00:23:05,960 --> 00:23:08,630
>> Se konsa, ak kèk pwobabilite,
sa a nimewo routeur sèt

536
00:23:08,630 --> 00:23:10,270
se pwobableman, tout bon, nan New York.

537
00:23:10,270 --> 00:23:13,020
Lè sa a sanble yo ranfòse
ki sipozisyon paske li nan

538
00:23:13,020 --> 00:23:16,700
sis milisgond olye pou yo jis yon sèl
oswa konsa nan yon bagay isit la sou lakou lekòl la.

539
00:23:16,700 --> 00:23:19,900
Men koulye a, pran ki an kont,
dwa sou Megabus oswa etajèr,

540
00:23:19,900 --> 00:23:23,810
li ta ka pran kat, senk, sis èdtan
yo ka resevwa yon moun soti isit la nan New York.

541
00:23:23,810 --> 00:23:28,040
>> Pou jwenn yon moso nan done, li
pran jis sis milisgond

542
00:23:28,040 --> 00:23:31,020
yo ka resevwa yon pake nan men m 'lavil Dann si
li te tout wout la nan New York.

543
00:23:31,020 --> 00:23:36,832
Lè sa a, finalman, sa a aparamman se nan
aktyèl non domèn pou www.mit.edu.

544
00:23:36,832 --> 00:23:38,790
Yo te gen aparamman
tretans serveurs wèb yo

545
00:23:38,790 --> 00:23:42,030
nan yon konpayi yo rele Akamai ki vle di
kèk lòt konpayi kouri serveurs yo.

546
00:23:42,030 --> 00:23:44,380
Ak Se poutèt sa nou ap wè
ke bagay etranj la.

547
00:23:44,380 --> 00:23:45,720
>> Oke, kite la fè sa yon fwa plis.

548
00:23:45,720 --> 00:23:49,150
Se pou nou ale pi devan epi fè yon tras
wout zanmi nou an Pwofesè Nick

549
00:23:49,150 --> 00:23:52,955
Parlante nan Stanford ki gen yon
sèvè rele nifty.stanfor.edu.

550
00:23:52,955 --> 00:23:55,870

551
00:23:55,870 --> 00:23:56,980
Antre nan.

552
00:23:56,980 --> 00:23:59,460
Epi, koulye a, nou pral wè pwobableman
yon chemen ti kras pi lontan

553
00:23:59,460 --> 00:24:00,960
ki ale nan yon kèk plis vil yo.

554
00:24:00,960 --> 00:24:03,160
Se konsa, isit sa yo inkonu
Serveurs Harvard isit la.

555
00:24:03,160 --> 00:24:05,660
Nou ap nan nwayo a nan Harvard,
pòtay lavil la fwontyè a Harvard,

556
00:24:05,660 --> 00:24:08,081
krwaze semen nan zòn nò yo,
tout kote sa a se.

557
00:24:08,081 --> 00:24:10,080
Epi, koulye a, li la ap resevwa yon
ti kras plis enteresan.

558
00:24:10,080 --> 00:24:12,960
Mwen devine ki routeur
Nimewo uit se nan sa ki vil la?

559
00:24:12,960 --> 00:24:14,210
ODYANS: [Entèrpozisyon vwa]

560
00:24:14,210 --> 00:24:18,570
DAVID Malan: Chicago pwobableman, ki baze
sou sa a, ki baze sou bagay sa a isit la.

561
00:24:18,570 --> 00:24:25,220
Epi, koulye a nou gen Salt Lake City petèt,
petèt Los Angeles isit la, ak Lè sa a, Lax,

562
00:24:25,220 --> 00:24:27,690
YEP, sa a pwobableman se pa LA pati anba nan.

563
00:24:27,690 --> 00:24:29,940
Jouk finalman, li ale
soti nan sid Kalifòni

564
00:24:29,940 --> 00:24:34,420
tout wout la moute nan nò California
nan kote Stanford se nan Palo Alto.

565
00:24:34,420 --> 00:24:35,299
Se konsa, trè fre.

566
00:24:35,299 --> 00:24:36,840
Li kite yo pran etap sa a yon sèl pi lwen.

567
00:24:36,840 --> 00:24:39,000
Li aparamman ta
pran ou 82 milisgond

568
00:24:39,000 --> 00:24:42,360
yo voye yon mesaj bay Dann si ou te
nan California olye pou yo New York.

569
00:24:42,360 --> 00:24:45,090
Se pou nou fè yon bagay
tankou wout tras, yon sèl

570
00:24:45,090 --> 00:24:51,350
eseye www.cnn.co.jp pou la
Vèsyon Japonè yo sou sit entènèt CNN nan.

571
00:24:51,350 --> 00:24:52,540

572
00:24:52,540 --> 00:24:54,910
Epi, koulye a, nou ap toujou nan
Boston li sanble nan moman an.

573
00:24:54,910 --> 00:24:56,050

574
00:24:56,050 --> 00:24:58,165
>> Yon serveurs koup sis ak
uit yo pa reponn

575
00:24:58,165 --> 00:24:59,790
paske yo ap ke yo te yon ti kras prive.

576
00:24:59,790 --> 00:25:04,970
Men, evantyèlman, gen sanble ap
yon bagay ki enteresan pral sou ant,

577
00:25:04,970 --> 00:25:08,395
kite la di, etap sèt ak nèf.

578
00:25:08,395 --> 00:25:09,800

579
00:25:09,800 --> 00:25:12,610
Ki sa ki se pwobableman ant
sèt ak nèf, epi sètènman

580
00:25:12,610 --> 00:25:14,610
ant sèt ak etap 17?

581
00:25:14,610 --> 00:25:18,090

582
00:25:18,090 --> 00:25:20,210
Genyen yon gwo so
nan kantite lajan an nan tan

583
00:25:20,210 --> 00:25:23,540
li nan pran pou done yo ale soti nan yon
nan oublions sa yo, youn nan routeurs sa yo

584
00:25:23,540 --> 00:25:24,060
nan yon lòt.

585
00:25:24,060 --> 00:25:27,310
>> Se konsa, chans yo se, yon kote nan
isit la, gen nan pwobableman,

586
00:25:27,310 --> 00:25:31,440
espesyalman dwa isit la, gen nan pwobableman
yon kò gwo anpil nan dlo ki

587
00:25:31,440 --> 00:25:35,320
gen kèk Abitan trans oswa trans
Atlantik kab ki aktyèlman mande pou

588
00:25:35,320 --> 00:25:37,710
menm plis tan pou done yo
jwenn soti nan yon pwen a yon lòt.

589
00:25:37,710 --> 00:25:40,690
Men, ankò, imajine èdtan yo
li ta pran vole a nan Japon.

590
00:25:40,690 --> 00:25:45,786
Isit la, nan kèk 200 milisgond,
boom, mesaj ou a se aktyèlman la.

591
00:25:45,786 --> 00:25:48,160
Se konsa, ou ka jwe otou ak
sa a sou aparèy la oswa menm

592
00:25:48,160 --> 00:25:50,940
nan Windows oswa Mac OS ak
yon ti kras diferan kòmandman.

593
00:25:50,940 --> 00:25:53,860
Pafwa, ou pral jwenn zetwal sa yo,
tankou nan ranje sis ak wit, ki

594
00:25:53,860 --> 00:25:55,300
jis vle di routeurs yo
yo configuré pa

595
00:25:55,300 --> 00:25:57,120
ba ou yon repons
pou dedomajman pou vi prive a.

596
00:25:57,120 --> 00:26:00,210
Men, jeneralman, teknik sa a
ta, an reyalite, travay.

597
00:26:00,210 --> 00:26:03,730
>> Se konsa, li vire soti twò gen nan lòt
enfòmasyon juicy kachèt nan zouti

598
00:26:03,730 --> 00:26:05,610
ke ou pran pou yo akòde chak jou.

599
00:26:05,610 --> 00:26:08,560
Se konsa, pou egzanp, si w ap resevwa
yon imèl, franchman tankou kèk nan ou

600
00:26:08,560 --> 00:26:11,270
ka gen dènyèman, nan dout
orijin, si ou te pa janm

601
00:26:11,270 --> 00:26:13,330
gade Gmail koòdone
anvan, si li nan

602
00:26:13,330 --> 00:26:15,560
pou koòdone nan kolèj
oswa yon sèl pèsonèl ou,

603
00:26:15,560 --> 00:26:17,620
ou ta ka wè ou
bwat resepsyon kap tankou sa a.

604
00:26:17,620 --> 00:26:20,910
>> Ak an reyalite, sa a se yon imèl
M 'te voye, malan@harvard.edu,

605
00:26:20,910 --> 00:26:24,620
jharvard@cs50.harvard.edu
sa a maten jis

606
00:26:24,620 --> 00:26:26,070
konsa mwen te kapab pran yon D '.

607
00:26:26,070 --> 00:26:28,149
Men, li vire soti, tout
tan sa a nan Gmail,

608
00:26:28,149 --> 00:26:30,190
gen nan ki triyang ti kras
nan direksyon dwat nan tèt

609
00:26:30,190 --> 00:26:34,080
gen akote krèt la Harvard ke si
ou klike sou, ou ka klike Montre Original.

610
00:26:34,080 --> 00:26:35,160

611
00:26:35,160 --> 00:26:39,260
Men, si ou fè sa, ou pral aktyèlman wè
yon pakèt moun sou enfòmasyon trè Esoteric

612
00:26:39,260 --> 00:26:43,360
tankou timèstanp, ak IP
adrès, ak non domèn.

613
00:26:43,360 --> 00:26:46,990
>> Men, ou pral wè, nan kout, nan
Tèt ke tout tan sa a gen

614
00:26:46,990 --> 00:26:50,430
te frape nan chak ak tout
e-mail ou voye ak resevwa.

615
00:26:50,430 --> 00:26:54,130
Lè li nan Tèt sa yo ke gen moun ki kapab
sèvi ak, syantis òdinatè oswa otreman,

616
00:26:54,130 --> 00:26:56,670
yo aktyèlman dégager ak
kèk pwobabilite ki kote

617
00:26:56,670 --> 00:26:59,290
ak nan men ki moun yon imèl aktyèlman vin rive.

618
00:26:59,290 --> 00:27:01,830
>> An reyalite, nou pral pale nan
semèn pita sou ki jan imel

619
00:27:01,830 --> 00:27:04,100
tèt li ka pwodwi
programe ki

620
00:27:04,100 --> 00:27:07,100
se yon trè bon bagay pou yon sit entènèt
ki vle voye Imèl itilizatè.

621
00:27:07,100 --> 00:27:12,020
Men, nou pral wè, tou, jis ki jan trivial
li se yo fòje Imèl soti nan yon moun

622
00:27:12,020 --> 00:27:15,380
nan yon lòt moun, sof si ou aktyèlman
konnen ki jan yo verifye tèt yo.

623
00:27:15,380 --> 00:27:18,670
E menm ki se yon pèdi
pwopozisyon jou sa yo.

624
00:27:18,670 --> 00:27:22,220
>> Se konsa, avèk ki te di,
kite yo ale yon kouch yo.

625
00:27:22,220 --> 00:27:25,100
Nou te kòmanse avèk IP ki
adrese pakè pou nou,

626
00:27:25,100 --> 00:27:26,470
ba yo adrès inik.

627
00:27:26,470 --> 00:27:29,770
Tchp, ki, nan kout,
garanti livrezon oswa omwen

628
00:27:29,770 --> 00:27:34,002
ogmante pwobabilite a ladan l 'pa
ajoute bagay sa yo tankou segments, 1 oswa 4,

629
00:27:34,002 --> 00:27:36,740
2 nan 4, 3 nan 4, ak 4 nan 4.

630
00:27:36,740 --> 00:27:40,710
>> Epi, koulye a, se pou yo kouch sou tèt
a ke yon lòt pwotokòl.

631
00:27:40,710 --> 00:27:44,550
Tout bagay sa yo yo se
pwotokòl, konvansyon òdinatè

632
00:27:44,550 --> 00:27:47,670
ki dikte ki jan de
òdinatè pale ak youn ak lòt.

633
00:27:47,670 --> 00:27:52,030
HTTP, finalman jodi a, se
ipèrtèks pwotokòl transfè.

634
00:27:52,030 --> 00:27:54,100
Lè sa a se pwotokòl la
ki navigatè entènèt

635
00:27:54,100 --> 00:27:56,410
itilize lè pale ak serveurs entènèt.

636
00:27:56,410 --> 00:27:59,970
>> Se konsa, lè ou rale moute yon navigatè tankou
Chrome, oswa IE, oswa Firefox, oswa Safari,

637
00:27:59,970 --> 00:28:04,230
oswa kèlkeswa sa, epi ou tape nan yon bagay
tankou facebook.com ak frape Antre,

638
00:28:04,230 --> 00:28:08,390
pa sèlman fè sa ki òdinatè w lan premye
tradui facebook.com nan ki sa?

639
00:28:08,390 --> 00:28:10,590

640
00:28:10,590 --> 00:28:11,770
Yon adrès IP.

641
00:28:11,770 --> 00:28:17,420
Li Lè sa a, li Lè sa a converts-- voye yon
mesaj bay ki adrès IP li di,

642
00:28:17,420 --> 00:28:21,360
ban m 'paj dakèy la jodi a oswa pou bay
m 'ekran an login nan Facebook.

643
00:28:21,360 --> 00:28:25,290
>> Oswa si w ap deja louvri sesyon an, bay
m 'gade nan default nan delè mwen.

644
00:28:25,290 --> 00:28:26,820
Se konsa, se sa ki HTTP di.

645
00:28:26,820 --> 00:28:30,055
Ak plis ankò familyerman, si mwen menm ki yon sit entènèt
sèvè ak ou are-- sa ki nan non ou,

646
00:28:30,055 --> 00:28:30,180
ankò?

647
00:28:30,180 --> 00:28:30,920
>> ODYANS: Margot.

648
00:28:30,920 --> 00:28:34,250
>> DAVID Malan: Margot se yon sit entènèt
sèvè, ak mwen se yon navigatè entènèt,

649
00:28:34,250 --> 00:28:37,610
ak mwen tou senpleman vle rekipere mwen
delè soti nan Margot, margot.com,

650
00:28:37,610 --> 00:28:39,640
Mwen ta ka di, hello, mwen se David.

651
00:28:39,640 --> 00:28:40,870
>> ODYANS: Hi, mwen se Margot.

652
00:28:40,870 --> 00:28:43,570
>> DAVID Malan: Epi ou ta Lè sa a reponn
ak plis enfòmasyon m '.

653
00:28:43,570 --> 00:28:45,890
Se konsa, nou gen moun sa a estipid
konvansyon pou instance-- di ou mèsi.

654
00:28:45,890 --> 00:28:47,510
--of bay lanmen chak lòt la.

655
00:28:47,510 --> 00:28:51,670
Ak òdinatè gen lide sa a menm
kote yon kliyan, tankou yon navigatè,

656
00:28:51,670 --> 00:28:55,600
mande yon sèvè fè yon bagay
sou non li.

657
00:28:55,600 --> 00:28:57,540
>> Se konsa, isit la nan yon foto, pou egzanp.

658
00:28:57,540 --> 00:29:01,120
Sou bò gòch la se yon laptop òdinatè,
Desktop, kèlkeswa sa, oswa menm yon telefòn.

659
00:29:01,120 --> 00:29:03,890
Yo, epi sou bò dwat la se yon trè
ki date gade nan yon sèvè.

660
00:29:03,890 --> 00:29:06,460
Yo tipikman sanble ki pi piti
ak sexier jou sa yo.

661
00:29:06,460 --> 00:29:09,570
Men, pwen an se tou senpleman ke
gen nan kèk kalite kominikasyon

662
00:29:09,570 --> 00:29:11,800
ant kliyan ak sèvè.

663
00:29:11,800 --> 00:29:14,080
>> Ak kliyan nan sans
nan yon moun nan yon restoran

664
00:29:14,080 --> 00:29:16,620
ak gason an oswa sèvez nan restoran,
menm lide ak òdinatè.

665
00:29:16,620 --> 00:29:19,340
Kliyan ak serveurs, yon sèl
mande pou enfòmasyon,

666
00:29:19,340 --> 00:29:21,560
yon sèl reponn ak enfòmasyon.

667
00:29:21,560 --> 00:29:23,920
Koulye a, ki jan fè sa
enfòmasyon tounen?

668
00:29:23,920 --> 00:29:25,890
Oke, konsidere sa a.

669
00:29:25,890 --> 00:29:30,360
Jwenn se sòt de default a way--
ak li nan yon tèm super senp.

670
00:29:30,360 --> 00:29:34,530
--that jis dikte ki jan yon navigatè
vin enfòmasyon ki soti nan yon sèvè.

671
00:29:34,530 --> 00:29:38,270
>> Nan lòt mo, olye ke sèlman
gafe-ili pwolonje men m 'Margot,

672
00:29:38,270 --> 00:29:42,100
si mwen reyèlman yo te yon navigatè, mwen
ta bagay andedan nan yon anvlòp,

673
00:29:42,100 --> 00:29:46,580
jan mwen te fè ki gen foto Rob a anvan, yon
mesaj textuelle ki literalman di

674
00:29:46,580 --> 00:29:53,084
yon bagay tankou sa a,
jwenn / http / 1.1hostwww.google.com

675
00:29:53,084 --> 00:29:56,670
oswa margot.com tou sa a oswa
Non sèvè a ka rive yo dwe.

676
00:29:56,670 --> 00:29:58,540
Epi lè sa a, dot dot dot, kèk bagay lòt.

677
00:29:58,540 --> 00:30:00,310
>> Men, literalman, andedan
nan yon anvlòp ta

678
00:30:00,310 --> 00:30:03,290
dwe san patipri ki senp textuelle
mesaj tankou sa.

679
00:30:03,290 --> 00:30:05,990
Sa lè yo resevwa, Margot ta
louvri moute, li kontni an,

680
00:30:05,990 --> 00:30:07,640
epi reponn kòmsadwa.

681
00:30:07,640 --> 00:30:12,000
Koulye a, li nan yon ti kras
ki pa evidan ak egzanp sa a.

682
00:30:12,000 --> 00:30:16,130
Men, jwenn /, ki sa ki koupe a
pwobableman refere li a, jis ki baze

683
00:30:16,130 --> 00:30:20,470
sou connaissance ou a ak
Navigasyon entènèt la nan lavi chak jou?

684
00:30:20,470 --> 00:30:22,206
Ki sa ki nan koupe la?

685
00:30:22,206 --> 00:30:23,147
>> ODYANS: [fèbl].

686
00:30:23,147 --> 00:30:24,480
DAVID Malan: Yon sekans chape.

687
00:30:24,480 --> 00:30:27,280
Pa yon lide move men jeneralman
chape sekans ale nan lòt fason.

688
00:30:27,280 --> 00:30:28,760
Ki ta ka yon antislach anjeneral.

689
00:30:28,760 --> 00:30:29,560
Men, pa yon move panse.

690
00:30:29,560 --> 00:30:30,060
Yeah?

691
00:30:30,060 --> 00:30:31,190

692
00:30:31,190 --> 00:30:31,830
Yon konsèy.

693
00:30:31,830 --> 00:30:35,100
Epitou bon te panse men
menm ki pi senp pase sa.

694
00:30:35,100 --> 00:30:36,250
Anyè a lakay ou.

695
00:30:36,250 --> 00:30:38,380
Rasin lan nan yon kondwi difisil, se konsa pale.

696
00:30:38,380 --> 00:30:39,890
Pifò nan nou pa tape sa a.

697
00:30:39,890 --> 00:30:43,150
Men, teknikman, si ou te vle
yo dwe Super bon jou sa yo,

698
00:30:43,150 --> 00:30:50,056
ou ta ale nan yon bagay
tankou http://www.facebook.com/.

699
00:30:50,056 --> 00:30:52,580
>> Koulye a, mwen te di pi fò nan nou pa ta
anmède sezisman koupe a.

700
00:30:52,580 --> 00:30:54,770
Ak franchman, pi fò
navigatè, Chrome enkli,

701
00:30:54,770 --> 00:30:57,019
pa menm bezwen deranje ki montre
nou koupe nan jou sa yo

702
00:30:57,019 --> 00:30:59,060
jis paske yo renmen
gen senp ak somèr.

703
00:30:59,060 --> 00:31:02,920
Men, koupe an jis vle di ale
www.facebook.com epi pou yo jwenn

704
00:31:02,920 --> 00:31:08,076
koupe, rasin lan nan kondwi a difisil,
paj an default nan facebook.com.

705
00:31:08,076 --> 00:31:09,240
Lè l sèvi avèk sa ki pwotokòl?

706
00:31:09,240 --> 00:31:14,910
Oke, lè l sèvi avèk vèsyon 1.1 nan
bagay sa a li te ye kòm HTTP.

707
00:31:14,910 --> 00:31:16,750
>> Sèvè a, oswa Margot--
ak nan chemen an, fè

708
00:31:16,750 --> 00:31:17,920
ou tèt ou ke mwen sèvi ak ou nan sa yo?

709
00:31:17,920 --> 00:31:18,419
OK.

710
00:31:18,419 --> 00:31:19,430
Se konsa, nou ap bon kounye a.

711
00:31:19,430 --> 00:31:23,910
Se konsa, Margot repons kounye a ak yon
anvlòp nan pwòp li, andedan nan yo ki

712
00:31:23,910 --> 00:31:26,040
se yon mesaj Menm jan an tou textuelle.

713
00:31:26,040 --> 00:31:30,640
Liy nan premye nan ki se,
YEP, m ap pale HTTP vèsyon 1.1.

714
00:31:30,640 --> 00:31:34,930
200 se kòd la sitiyasyon
ki jis vle di tout se OK.

715
00:31:34,930 --> 00:31:37,440
Mwen gen paj la w ap chèche pou.

716
00:31:37,440 --> 00:31:44,040
>> Pandan se tan, Content-Type: tèks / html, sa a
se semi-Esoteric fason Margot a nan li di:

717
00:31:44,040 --> 00:31:46,190
sa ou te mande a se yon paj entènèt.

718
00:31:46,190 --> 00:31:50,530
Lè li nan kalite, se konsa pale
prèske tankou yon sans varyab,

719
00:31:50,530 --> 00:31:52,060
men sa a se pi wo nivo kounye a.

720
00:31:52,060 --> 00:31:55,380
Kalite done li se tèks
men espesyalman HTML.

721
00:31:55,380 --> 00:31:57,210
Lang nan nou pral byento wè.

722
00:31:57,210 --> 00:31:58,700
>> Lè sa a,, gen nan kèk bagay lòt.

723
00:31:58,700 --> 00:32:02,060
Se konsa, lòt bagay se literalman ki sa
Facebook ap reponn avèk yo.

724
00:32:02,060 --> 00:32:03,400
Se konsa, kite a wè sa a, tou.

725
00:32:03,400 --> 00:32:05,380
Kite m 'ale pi devan epi louvri
moute Chrome sou laptop mwen

726
00:32:05,380 --> 00:32:07,980
ki ou ka fè sou ou
pwòp òdinatè kòm byen.

727
00:32:07,980 --> 00:32:12,035
Apre sa, mwen pral ale pi devan
epi louvri moute www.facebook.com.

728
00:32:12,035 --> 00:32:12,535
Antre nan.

729
00:32:12,535 --> 00:32:13,590

730
00:32:13,590 --> 00:32:16,264
Apre sa, mwen jwenn sa a ekran abitye isit la.

731
00:32:16,264 --> 00:32:17,930
Men, kounye a, mwen pral fè yon lòt bagay.

732
00:32:17,930 --> 00:32:21,670
Mwen pral ale pi devan epi
ale nan View, Developer.

733
00:32:21,670 --> 00:32:24,190
Epi ale nan Developer
Zouti, ki ou ta dwe

734
00:32:24,190 --> 00:32:27,377
gen nan Chrome sou òdinatè ou,
omwen ki nan aparèy ou yo.

735
00:32:27,377 --> 00:32:29,460
Mwen pral woulo liv sa a
bagay moute isit la, epi w ap

736
00:32:29,460 --> 00:32:33,060
ale nan wè yon pakèt antye
nan tèks skre isit la.

737
00:32:33,060 --> 00:32:37,920
>> Li sanble ke sa Margot mete anndan
nan ki anvlòp nan repons m '

738
00:32:37,920 --> 00:32:41,472
se yon lang yo rele HTML,
Ipèrtèkst markeup lang.

739
00:32:41,472 --> 00:32:43,680
Li pa yon pwogram
lang paske ou pa kapab, li

740
00:32:43,680 --> 00:32:46,679
pa gen pasan, ak kondisyon,
ak fonksyon, ak bagay tankou sa.

741
00:32:46,679 --> 00:32:47,870
Li se yon lang markeup.

742
00:32:47,870 --> 00:32:52,110
Nan ki, li gen sentaks espesyal
rele Tags ak atribi

743
00:32:52,110 --> 00:32:57,120
ki di yon navigatè ki sa yo montre
sou ekran an ak kouman yo montre li.

744
00:32:57,120 --> 00:32:57,920
Yo ta dwe santre?

745
00:32:57,920 --> 00:32:58,920
Ta dwe li fonse-fè fas?

746
00:32:58,920 --> 00:33:00,270
Wouj, vèt, ble?

747
00:33:00,270 --> 00:33:01,390
Li se yon lang markeup.

748
00:33:01,390 --> 00:33:04,970
Nan sa, li di yon navigatè
sa yo dwe montre sou ekran an.

749
00:33:04,970 --> 00:33:10,530
Se konsa, sa a se, literalman, nan tout la
HTML ak plis ke Facebook sèvè

750
00:33:10,530 --> 00:33:13,950
se voye krache deyò e ke
Chrome, ak IE, ak Firefox gen

751
00:33:13,950 --> 00:33:17,820
te fèt pa yo
otè respektif yo konprann.

752
00:33:17,820 --> 00:33:20,780
>> Ak an reyalite, li nan yon
ti kras messier pase sa.

753
00:33:20,780 --> 00:33:24,290
Si ou menm, olye de sa, ale nan View,
Developer, View Sous,

754
00:33:24,290 --> 00:33:27,550
sa a se aktyèlman sa ki
Facebook se soti mete.

755
00:33:27,550 --> 00:33:29,800
Triye nan zewo pou senk
pou style, dwa, si nou

756
00:33:29,800 --> 00:33:31,479
dégager ke sa a pwobableman se pa pi bon an.

757
00:33:31,479 --> 00:33:34,270
Men, franchman, yo ka jwenn lwen ak
li paske si w ap sèvi moute

758
00:33:34,270 --> 00:33:36,090
dè milya de paj wèb
chak jou, ou reyèlman

759
00:33:36,090 --> 00:33:40,040
pa vle gaspiye tan, ak bytes,
ak lajan finalman nan transmèt

760
00:33:40,040 --> 00:33:43,000
bagay sa yo tankou nouvo liy
karaktè, ak espas, ak onglè

761
00:33:43,000 --> 00:33:46,870
paske w ap depanse pou Pleasant
san nesesite ak ISP ou.

762
00:33:46,870 --> 00:33:49,580
>> Se konsa, tout bon, sa a se te vle di
yo dwe minified nan fason sa.

763
00:33:49,580 --> 00:33:51,740
Men, sa ki Chrome ap fè
pou nou se, li la pran

764
00:33:51,740 --> 00:33:56,310
HTML sa a, ki konplètman sanble
yon dezòd ak enkonpreansibl imen,

765
00:33:56,310 --> 00:33:57,580
ak li jis fòma li.

766
00:33:57,580 --> 00:34:00,280
Li trè enprime li pou ke
nou ka vlope lespri nou bò kote l '

767
00:34:00,280 --> 00:34:01,452
yon ti kras plis fasilman.

768
00:34:01,452 --> 00:34:02,660
Men, plis enteresan an se sa a.

769
00:34:02,660 --> 00:34:06,180
Si mwen kounye a klike sou nan Chrome,
pa eleman men rezo a,

770
00:34:06,180 --> 00:34:08,520
Mwen pral wè yon ti kras
ekran antre sa a, se

771
00:34:08,520 --> 00:34:11,040
pral montre m 'tout
nan demann yo HTTP

772
00:34:11,040 --> 00:34:14,380
ke yo aktyèlman pral retounen lakay yo epi
soti ant mwen menm ak Facebook oswa m '

773
00:34:14,380 --> 00:34:17,219
ak Margot si mwen fè
plis pase yon demann.

774
00:34:17,219 --> 00:34:21,409
>> Se konsa, mwen pral ale pi devan epi klike
icon nan Reload moute isit la nan Chrome.

775
00:34:21,409 --> 00:34:23,850
Epi, koulye a, yon pakèt antye nan
bagay te pran vòl sot pase nan pati anba a.

776
00:34:23,850 --> 00:34:25,710
Mwen pral woulo liv
tounen moute nan tèt la anpil.

777
00:34:25,710 --> 00:34:29,350
Epi, koulye a, remake sa a nan,
trè premye mande navigatè m '

778
00:34:29,350 --> 00:34:31,340
fè fè a te www.facebook.com.

779
00:34:31,340 --> 00:34:34,199
>> Li nan lè l sèvi avèk jwenn nan
mekanis ki jis vle di

780
00:34:34,199 --> 00:34:37,810
li nan pale lang nan textuelle
ke nou te wè yon egzanp yon ti moman de sa.

781
00:34:37,810 --> 00:34:41,909
Epi ankò, li vire soti
ke repons lan ke Facebook

782
00:34:41,909 --> 00:34:46,070
te ban m 'se 200 OK, ki vle di mwen
jwenn paj wèb la nan kesyon an.

783
00:34:46,070 --> 00:34:49,630
>> Si m 'klike sou ranje sa a, mwen kapab aktyèlman
wè sa yo Tèt yon ti kras plis

784
00:34:49,630 --> 00:34:50,800
byen klè.

785
00:34:50,800 --> 00:34:52,810
Sa yo pral fè plis sans anvan lontan.

786
00:34:52,810 --> 00:34:57,020
Men, remake ke navigatè mwen voye yon
anpil tout enfòmasyon tankou lame,

787
00:34:57,020 --> 00:34:59,320
ak metòd, ak bonbon.

788
00:34:59,320 --> 00:35:00,879
Nou pral tounen vin jwenn sa yo anvan lontan.

789
00:35:00,879 --> 00:35:03,170
Men, ou pral finalman konprann
ki sa yon bonbon aktyèlman se

790
00:35:03,170 --> 00:35:04,930
ak fason ou byento yo pral voye yo.

791
00:35:04,930 --> 00:35:06,900
>> Epi ou ka wè sa ki
Facebook ap voye tounen,

792
00:35:06,900 --> 00:35:12,230
ki gen ladan kalite a kontni nan tèks
HTML, dat tan an kounye a, sou vi prive li yo

793
00:35:12,230 --> 00:35:15,530
politik, oswa mank ladan l ', ak
lè sa a, finalman, yon nimewo nan bonbon

794
00:35:15,530 --> 00:35:18,050
sa ki te mete sou
òdinatè w lan kòm byen.

795
00:35:18,050 --> 00:35:20,140
Men, nou pral toumante moun apa anvan lontan.

796
00:35:20,140 --> 00:35:23,950
>> Men, nan ti bout tan, chak fwa ou
te vizite yon paj entènèt, kounye a pou ane,

797
00:35:23,950 --> 00:35:26,970
ou ve yo te voye pou bay mesaj pou
yon sèl la mwen voye nan yon anvlòp

798
00:35:26,970 --> 00:35:28,230
Margot ak lavil Dann.

799
00:35:28,230 --> 00:35:31,210
Epi ou ve yo te ap resevwa tounen
repons tankou sa a soti nan Facebook.

800
00:35:31,210 --> 00:35:35,650
Men, ankò, devine sa ki te
divilge ba Facebook, ak Google,

801
00:35:35,650 --> 00:35:39,101
ak tout lòt moun chak
fwa ou ale nan yon paj entènèt?

802
00:35:39,101 --> 00:35:42,100
Ki sa ki se sou deyò a nan chak
anvlòp te òdinatè w lan te voye?

803
00:35:42,100 --> 00:35:43,800

804
00:35:43,800 --> 00:35:45,590
Adrès IP ou a, dwa?

805
00:35:45,590 --> 00:35:48,720
Petèt pa non ou pou chak
SE, men adrès IP ou.

806
00:35:48,720 --> 00:35:52,410
Ak jis, se pou yo konekte pwen yo
pita, si w ap itilize sèvis

807
00:35:52,410 --> 00:35:54,430
tankou entènèt la, oswa
Bitor, ak lavi a,

808
00:35:54,430 --> 00:35:56,860
ak ou te anrejistre yon òdinatè
nan yon kote tankou Harvard,

809
00:35:56,860 --> 00:36:01,080
yon moun yon kote konnen ke Jan
IP adrès Harvard la sa a, dot sa a,

810
00:36:01,080 --> 00:36:02,350
dot sa a, dot sa a.

811
00:36:02,350 --> 00:36:06,730
>> Ak tout bon, mòso bwa ka li te kenbe tou de sou yon
lakou lekòl la tankou sa a, sou yon rezo Comcast,

812
00:36:06,730 --> 00:36:10,270
sou Verizon, oswa franchman, nan la
NSA kòm nou te dènyèman te aprann,

813
00:36:10,270 --> 00:36:14,040
ki journaux tout bagay bèl anpil
ke ou ap fè sou entènèt la.

814
00:36:14,040 --> 00:36:15,910
Apre sa, nou pral tounen vin jwenn
klas sa a nan lavni

815
00:36:15,910 --> 00:36:18,990
sou enplikasyon yo nan sa yo
desizyon konsepsyon ak sekirite.

816
00:36:18,990 --> 00:36:21,920
>> Men, verite a se, ou reyèlman
pa gen tout sa ki sou vi prive anpil.

817
00:36:21,920 --> 00:36:25,380
Chak fwa ou ve yo te vizite nenpòt kote
sou entènèt la, ou te montre men ou

818
00:36:25,380 --> 00:36:28,720
ak revele nan omwen adrès IP ou.

819
00:36:28,720 --> 00:36:35,930
Se konsa, fè pè nòt sou kote, sa nou kapab fè
Afiche bagay sa yo tankou chat nan yon paj entènèt?

820
00:36:35,930 --> 00:36:40,730
>> Se konsa, nou gen yon pakèt moun sou repons ki
ta ka vini tounen soti nan sèvè a.

821
00:36:40,730 --> 00:36:42,340
Apre sa, nou pa pral wè tout moun sa yo jodi a.

822
00:36:42,340 --> 00:36:43,800
Men, 200 se yon bon bagay.

823
00:36:43,800 --> 00:36:46,622
Epi w ap pwobableman pa t 'wè
tout moun sa yo antanke moun anvan.

824
00:36:46,622 --> 00:36:48,580
Men, ou te pwobableman wè
omwen youn nan sa yo.

825
00:36:48,580 --> 00:36:50,204
Ki youn nan sa yo ta ka gade familye?

826
00:36:50,204 --> 00:36:51,097
ODYANS: 404

827
00:36:51,097 --> 00:36:51,930
DAVID Malan: Se konsa, 404.

828
00:36:51,930 --> 00:36:52,695
Pa File jwenn.

829
00:36:52,695 --> 00:36:55,320
Ak tout bon, w ap ale nan wè
sa a programe tèt ou.

830
00:36:55,320 --> 00:37:00,220
404 jis vle di dosye a ou mande a,
koupe oswa koupe yon bagay, tou senpleman

831
00:37:00,220 --> 00:37:00,950
pa egziste.

832
00:37:00,950 --> 00:37:04,380
Ak yon sèvè sit entènèt tipikman
reponn ak 404 kòm yon rezilta

833
00:37:04,380 --> 00:37:09,680
>> Pandan se tan, nou pral byento wè ke
sa ki nan ke mesaj

834
00:37:09,680 --> 00:37:11,800
se lang sa a li te ye kòm HTML.

835
00:37:11,800 --> 00:37:15,070
Lè sa a se yon super
senp brib nan HTML

836
00:37:15,070 --> 00:37:18,380
ki fè pa gen anyen lòt pase
montre alo mond sou ekran an.

837
00:37:18,380 --> 00:37:21,830
Vreman vre, ou wè nan tèt la nan sa a
yon bagay yo rele yon kalite dokiman

838
00:37:21,830 --> 00:37:24,220
deklarasyon ki jis di, hey, nan lemonn.

839
00:37:24,220 --> 00:37:25,964
Dosye sa a gen HTML.

840
00:37:25,964 --> 00:37:28,380
Epi lè sa a, ti jan nan pwochen nan HTML
ki w ap ale nan ekri,

841
00:37:28,380 --> 00:37:30,930
li gen yon bracket louvri,
ak Lè sa a mo HTML a,

842
00:37:30,930 --> 00:37:33,670
Lè sa a, yon bracket fèmen, ak Lè sa a
louvri tèt, ak fèmen bracket.

843
00:37:33,670 --> 00:37:36,000
Se konsa, nan kout, kite a aktyèlman
fè sa plis mekanikman.

844
00:37:36,000 --> 00:37:39,980
Kite m 'ale nan aparèy m' yo,
men ou ka fè sa a nenpòt kote

845
00:37:39,980 --> 00:37:42,110
ke ou gen yon editè tèks.

846
00:37:42,110 --> 00:37:45,105
>> Mwen pral ale pi devan epi
sove yon dosye rele hello.html.

847
00:37:45,105 --> 00:37:46,440

848
00:37:46,440 --> 00:37:49,640
Mwen pral mete l 'sou Desktop mwen an
kenbe bagay sa yo super senp kounye a.

849
00:37:49,640 --> 00:37:51,760
Apre sa, mwen pral fè
ekzakteman ki sa mwen jis te wè.

850
00:37:51,760 --> 00:37:55,452
Se konsa, kalite doc HTML, louvri HTML bracket.

851
00:37:55,452 --> 00:37:57,910
Epi, koulye a, avi, mwen pral
fè opoze a preemptively.

852
00:37:57,910 --> 00:38:01,000
Ak pa opoze a, mwen vle di
menm tag a, se konsa pale,

853
00:38:01,000 --> 00:38:02,767
men li kòmanse ak yon koupe pi devan.

854
00:38:02,767 --> 00:38:04,600
Epi lè sa a, sou isit la,
Mwen pral di, tèt,

855
00:38:04,600 --> 00:38:07,530
paske li vire soti ke chak
paj entènèt gen yon tèt sa yo rele ki

856
00:38:07,530 --> 00:38:10,300
se bagay ki ale nan tit la
defann, nan tèt la anpil nan paj la.

857
00:38:10,300 --> 00:38:13,026
Nan tit la se jis
pral fè alo isit la.

858
00:38:13,026 --> 00:38:15,150
Epi, koulye a, mwen pral gen
yon kò nan paj sa a web.

859
00:38:15,150 --> 00:38:18,130
Se konsa, chak paj entènèt gen tou de
yon tèt moute tèt ak yon kò

860
00:38:18,130 --> 00:38:19,522
ki se entesten yo nan paj la.

861
00:38:19,522 --> 00:38:21,980
Ak isit la, mwen jis ale nan
di yon bagay tankou mond hello.

862
00:38:21,980 --> 00:38:23,440
Men, mwen pral pou konsève pou sa a dosye.

863
00:38:23,440 --> 00:38:26,150
Si mwen kounye a misyon pou minimize jdi,
gade, gen nan yon ti kras dosye

864
00:38:26,150 --> 00:38:28,470
sou Desktop mwen an rele hello.html.

865
00:38:28,470 --> 00:38:30,820
Koulye a, sa a pa sou yon sèvè
ankò, se pou chak, Vreman vre, li nan

866
00:38:30,820 --> 00:38:33,040
jis sou pwòp Desktop pèsonèl mwen isit la.

867
00:38:33,040 --> 00:38:36,910
Men, si mwen louvri moute Chrome ak frape kontwòl
O-- gen nan chat la nan kesyon an.

868
00:38:36,910 --> 00:38:38,710
--and m 'ale nan Desktop m' yo.

869
00:38:38,710 --> 00:38:43,730
>> Apre sa, mwen louvri moute hello.html, gen, nan
reyalite, se paj super senp entènèt mwen an.

870
00:38:43,730 --> 00:38:45,490
Kò a nan paj m '
ak fenèt blan sa a

871
00:38:45,490 --> 00:38:47,610
isit la se kò a ak mond hello.

872
00:38:47,610 --> 00:38:51,020
Ak tit la nan tèt la nan
paj la se nan tab la a.

873
00:38:51,020 --> 00:38:53,020
Apre sa, nou ap ale nan wè
byento ke li nan super

874
00:38:53,020 --> 00:38:55,004
senp yo louvri moute lòt paj yo tou.

875
00:38:55,004 --> 00:38:57,670
Pou egzanp, mwen pral ale
nan kèk nan kòd la distribisyon

876
00:38:57,670 --> 00:39:00,230
pou semèn sa a, sous
sèt, ak mwen pral

877
00:39:00,230 --> 00:39:03,150
yo louvri moute pa JPEG a
ki sa a Guy se isit la.

878
00:39:03,150 --> 00:39:08,430
Men, mwen pral louvri moute image.html,
ki finalman sanble tankou sa a.

879
00:39:08,430 --> 00:39:15,140
Men, se pou m 'koulye a louvri sa a moute nan jdi,
epi ale nan Dropbox sous sèt,

880
00:39:15,140 --> 00:39:17,470
ak image.html.

881
00:39:17,470 --> 00:39:19,430

882
00:39:19,430 --> 00:39:21,960
>> Pifò nan sa a se jis
kòmantè menm jan nou pral byento wè.

883
00:39:21,960 --> 00:39:25,210
Men, si mwen vle mete mosad
Cat andedan nan paj entènèt sa a,

884
00:39:25,210 --> 00:39:29,890
li sifizan yo mete yon lòt bracket louvri,
ak Lè sa a imaj la mo kle oswa img

885
00:39:29,890 --> 00:39:33,080
pou ti bout tan, ak Lè sa a altènatif
tèks pou rezon aksè

886
00:39:33,080 --> 00:39:35,890
si yon moun gen yon ekran
lektè oswa yon bagay tankou sa.

887
00:39:35,890 --> 00:39:38,260
Sous ki se, sa ki nan la
non nan dosye a, cat.jpeg.

888
00:39:38,260 --> 00:39:39,280

889
00:39:39,280 --> 00:39:41,400
>> Lè sa a,, paske sa a
tag nan yon ti kras espesyal,

890
00:39:41,400 --> 00:39:44,140
nou mete koupe a pi devan, kòm
nou pral wè, andedan nan tag la.

891
00:39:44,140 --> 00:39:47,180
Men, rezilta nan fen se yon sit entènèt
paj ki sanble tankou sa a.

892
00:39:47,180 --> 00:39:51,320
Se konsa, nan kout, ki sa nou ap ale nan dwe
fè kounye a sou tan ap itilize ap itilize entènèt la

893
00:39:51,320 --> 00:39:54,200
ak kreye paj wèb
finalman gen resipyan

894
00:39:54,200 --> 00:39:57,280
pa sèlman pou bagay sa yo komik tankou
imaj, ak lyen yo, ak tablo yo,

895
00:39:57,280 --> 00:40:00,770
ak pus lis, ak renmen an,
men tou, yo ban nou tèt nou

896
00:40:00,770 --> 00:40:04,890
yon koòdone itilizatè grafik, yon entèfas,
pa kontrèman ak sa nou te fè nou pti.

897
00:40:04,890 --> 00:40:08,330
>> Men, nan anviwonman sa a, nou ap
pral kòmanse lè l sèvi avèk lang tankou PHP,

898
00:40:08,330 --> 00:40:10,960
ak JavaScript, baz done a
lang yo rele SQL,

899
00:40:10,960 --> 00:40:14,050
yon kliyan-kòt ak lang scripting
rele JavaScript yo aktyèlman kreye

900
00:40:14,050 --> 00:40:18,760
tout interfaces yo ki pi plis dinamik men
nan yon, kontèks anpil pi plis yo konnen yo.

901
00:40:18,760 --> 00:40:21,970
Men, anvan lè sa a, se pou yo
konkli jodi a ak yon gade,

902
00:40:21,970 --> 00:40:25,280
kòm te pwomèt la, nan sa ki reyèlman ale sou
anba kapo a ak entènèt la

903
00:40:25,280 --> 00:40:26,060
tèt li.

904
00:40:26,060 --> 00:40:28,400
>> Ladann pou jodi a
ke entènèt la kapab

905
00:40:28,400 --> 00:40:31,390
dwe itilize yo transfere bagay
tankou paj wèb sou HTTP

906
00:40:31,390 --> 00:40:33,150
anpil tankou mwen t'ap tranble anba pye men Margot a pi bonè.

907
00:40:33,150 --> 00:40:36,470
Men, gen nan anpil lòt
sèvis ki itilize tchp ak IP

908
00:40:36,470 --> 00:40:39,800
ke nou pran pou yo akòde
ke travay menm jan nou pral wè isit la

909
00:40:39,800 --> 00:40:42,477
nan fim sa a ki pral
pran nou nan fen a jodi a.

910
00:40:42,477 --> 00:40:45,956
>> [Lèktur VIDEO]

911
00:40:45,956 --> 00:41:31,710

912
00:41:31,710 --> 00:41:35,870
>> -Pou Premye fwa nan
istwa, moun ak machin

913
00:41:35,870 --> 00:41:38,940
yo travay ansanm, ka akonpli yon rèv.

914
00:41:38,940 --> 00:41:41,780
Yon fòs inifikasyon ki konnen
pa gen limit gewografik-li.

915
00:41:41,780 --> 00:41:45,010
San yo pa konsidere ras, kwayans, oswa koulè.

916
00:41:45,010 --> 00:41:49,130
Yon nouvo epòk kote kominikasyon
se vre wi: pote moun yo ansanm.

917
00:41:49,130 --> 00:41:51,795
Sa a se Dawn a nan Net la.

918
00:41:51,795 --> 00:41:54,920

919
00:41:54,920 --> 00:41:56,450
>> Vle konnen ki jan li fonksyone?

920
00:41:56,450 --> 00:42:00,260
Klike la a yo kòmanse ou
vwayaj nan nèt la.

921
00:42:00,260 --> 00:42:02,780

922
00:42:02,780 --> 00:42:05,380
Koulye a, egzakteman sa ki te pase
lè ou klike sou ki genyen lyen ki?

923
00:42:05,380 --> 00:42:07,190
Ou te kòmanse yon koule nan enfòmasyon.

924
00:42:07,190 --> 00:42:09,790
Enfòmasyon sa a vwayaje desann
nan sal pèsonèl mail ou

925
00:42:09,790 --> 00:42:14,040
lè Mesye IP pakè li, etikèt
li, epi voye li sou wout li.

926
00:42:14,040 --> 00:42:16,030
>> Chak pake se gwosè limite.

927
00:42:16,030 --> 00:42:19,900
Chanm nan lapòs dwe deside ki jan yo divize
enfòmasyon ki ak kouman yo package li.

928
00:42:19,900 --> 00:42:23,400
Koulye a, pake a bezwen yon etikèt sou
ki gen enfòmasyon ki enpòtan yo,

929
00:42:23,400 --> 00:42:27,480
tankou adrès, reseptè a moun k la
adrès, ak kalite a nan pake li ye.

930
00:42:27,480 --> 00:42:41,070

931
00:42:41,070 --> 00:42:43,700
>> Paske pake patikilye sa a
ki pral soti sou entènèt la,

932
00:42:43,700 --> 00:42:46,240
li tou vin yon adrès
pou sèvè a prokurasyon, ki

933
00:42:46,240 --> 00:42:47,990
gen yon fonksyon espesyal
jan nou pral wè pita.

934
00:42:47,990 --> 00:42:49,080

935
00:42:49,080 --> 00:42:53,430
Se pake a kounye a te lanse sou
rezo zòn lokal ou a oswa LAN.

936
00:42:53,430 --> 00:42:56,220
Rezo Sa a se itilize yo konekte
tout òdinatè lokal yo,

937
00:42:56,220 --> 00:42:58,760
routeurs enprimant, et setra
pou echanj enfòmasyon

938
00:42:58,760 --> 00:43:00,790
ki nan fizik la
mi nan bilding lan.

939
00:43:00,790 --> 00:43:04,840
LAN a se yon trè san kontwòl
mete epi, malerezman, aksidan

940
00:43:04,840 --> 00:43:05,828
ka rive.

941
00:43:05,828 --> 00:43:13,240

942
00:43:13,240 --> 00:43:16,020
>> Gran wout la nan LAN a se chaje
ak tout kalite enfòmasyon.

943
00:43:16,020 --> 00:43:19,270
Sa yo se IP paquets, Novell
pakè, Apple Pale pakè.

944
00:43:19,270 --> 00:43:21,440
Yo ap moute al goumen ak trafik kòm dabitid.

945
00:43:21,440 --> 00:43:24,040
Routeur lokal la li a
adrese, epi, si sa nesesè,

946
00:43:24,040 --> 00:43:25,935
asanseur pake a sou yon lòt rezo-a.

947
00:43:25,935 --> 00:43:27,610

948
00:43:27,610 --> 00:43:28,810
Ah, routeur la.

949
00:43:28,810 --> 00:43:31,990
Yon senbòl nan kontwòl nan yon
w pèdi Tètchaje nan lemonn.

950
00:43:31,990 --> 00:43:41,050

951
00:43:41,050 --> 00:43:45,480
>> Se la li se, yon sistematik,
uncaring, metodik, konsèvatif,

952
00:43:45,480 --> 00:43:48,100
epi pafwa pa byen jiska pi vit.

953
00:43:48,100 --> 00:43:50,430
Men, nan omwen, se li ki
egzak pou pati ki pi.

954
00:43:50,430 --> 00:44:03,090

955
00:44:03,090 --> 00:44:05,530
>> Kòm pakè yo kite la
routeur, yo fè wout yo

956
00:44:05,530 --> 00:44:08,780
nan entranèt nan antrepriz
ak tèt pou chanjman an routeur.

957
00:44:08,780 --> 00:44:10,179

958
00:44:10,179 --> 00:44:12,470
Yon ti jan pi plis efikas pase
routeur la, switch la routeur

959
00:44:12,470 --> 00:44:16,700
jwe vit ak ki lach ak pakè IP,
adrwatman routage yo sou wout la.

960
00:44:16,700 --> 00:44:18,950
Yon dijital biyar Sòsye si ou pral.

961
00:44:18,950 --> 00:44:19,532
>> -Here Nou ale.

962
00:44:19,532 --> 00:44:20,490
Mwen vini yon lòt yon sèl.

963
00:44:20,490 --> 00:44:21,198
Lè li nan yon lòt.

964
00:44:21,198 --> 00:44:21,886
Gade sa a, manman an.

965
00:44:21,886 --> 00:44:22,258
Isit la se ale.

966
00:44:22,258 --> 00:44:22,382
Whoops.

967
00:44:22,382 --> 00:44:23,126
Anviwon do a.

968
00:44:23,126 --> 00:44:23,374
Hey.

969
00:44:23,374 --> 00:44:23,622
Nan la.

970
00:44:23,622 --> 00:44:24,122
Nan la.

971
00:44:24,122 --> 00:44:24,862
Plis pase sou bò goch la.

972
00:44:24,862 --> 00:44:25,110
Plis pase a dwat la.

973
00:44:25,110 --> 00:44:25,358
Plis pase sou bò goch la.

974
00:44:25,358 --> 00:44:26,350
Plis pase a dwat la.

975
00:44:26,350 --> 00:44:26,596
Ou te resevwa li.

976
00:44:26,596 --> 00:44:26,846
Isit la li ale.

977
00:44:26,846 --> 00:44:27,342
Li lans.

978
00:44:27,342 --> 00:44:27,840
Li nòt.

979
00:44:27,840 --> 00:44:28,100
Li nan pral.

980
00:44:28,100 --> 00:44:28,580
Hey, rete tann.

981
00:44:28,580 --> 00:44:28,940
Hey, gade soti.

982
00:44:28,940 --> 00:44:29,898
Mwen vini yon lòt yon sèl.

983
00:44:29,898 --> 00:44:30,860
Oh, isit la nou ale.

984
00:44:30,860 --> 00:44:33,740

985
00:44:33,740 --> 00:44:35,930
>> Pakè -kòm rive nan
destinasyon yo, yo ap

986
00:44:35,930 --> 00:44:40,640
ranmase pa koòdone nan rezo a,
pare yo dwe voye li nan yon nivo kap vini an,

987
00:44:40,640 --> 00:44:42,000
nan ka sa a, prokurasyon a.

988
00:44:42,000 --> 00:44:43,060

989
00:44:43,060 --> 00:44:46,210
Se prokurasyon a itilize pa anpil
konpayi kòm sòt de yon nonm nan mitan

990
00:44:46,210 --> 00:44:48,650
yo nan lòd yo diminye chay la
sou koneksyon entènèt yo

991
00:44:48,650 --> 00:44:50,040
ak pou rezon sekirite kòm byen.

992
00:44:50,040 --> 00:44:51,824

993
00:44:51,824 --> 00:44:55,310
Kòm ou ka wè, pakè yo
yo tout diferan gwosè,

994
00:44:55,310 --> 00:44:56,650
tou depann de kontni yo.

995
00:44:56,650 --> 00:45:10,750

996
00:45:10,750 --> 00:45:14,790
>> Prokurasyon la ouvè pake a ak
sanble pou adrès la entènèt oswa URL.

997
00:45:14,790 --> 00:45:16,230

998
00:45:16,230 --> 00:45:18,707
Tou depan de si wi ou non
adrès la se akseptab,

999
00:45:18,707 --> 00:45:20,290
se pake a voye sou nan entènèt la.

1000
00:45:20,290 --> 00:45:25,880

1001
00:45:25,880 --> 00:45:28,700
Genyen, sepandan, gen kèk
adrès ki pa fè sa

1002
00:45:28,700 --> 00:45:31,440
rankontre ak apwobasyon an nan
prokurasyon a, se sa ki vle di,

1003
00:45:31,440 --> 00:45:33,305
antrepriz oswa jesyon direktiv.

1004
00:45:33,305 --> 00:45:35,830

1005
00:45:35,830 --> 00:45:38,290
Sa yo, se somèr te fè fas ak.

1006
00:45:38,290 --> 00:45:39,530

1007
00:45:39,530 --> 00:45:41,070
Nou pral gen Pa gen yonn nan sa.

1008
00:45:41,070 --> 00:45:43,350
Pou moun ki fè li,
li nan sou wout la ankò.

1009
00:45:43,350 --> 00:45:52,740

1010
00:45:52,740 --> 00:45:54,695
>> Next moute, pare-feu a.

1011
00:45:54,695 --> 00:45:58,060

1012
00:45:58,060 --> 00:46:01,414
Pare-feu lan rèstriktirasyon
sèvi de rezon.

1013
00:46:01,414 --> 00:46:03,580
Li anpeche kèk olye
bagay sa yo anbarasan sou entènèt la

1014
00:46:03,580 --> 00:46:05,379
soti nan vini nan entranèt a.

1015
00:46:05,379 --> 00:46:07,670
Epi li kapab tou anpeche
sansib enfòmasyon antrepriz

1016
00:46:07,670 --> 00:46:09,900
nan men yo te voye soti sou entènèt la.

1017
00:46:09,900 --> 00:46:11,810

1018
00:46:11,810 --> 00:46:14,210
>> Yon fwa nan firewall la,
yon routeur chwazi moute pake a

1019
00:46:14,210 --> 00:46:18,290
ak kote li sou yon anpil pi etwat
wout oswa Pleasant, menm jan nou yo di.

1020
00:46:18,290 --> 00:46:21,505
Li evidan, ranje a se pa
gwo ase yo pran yo tout.

1021
00:46:21,505 --> 00:46:22,727

1022
00:46:22,727 --> 00:46:25,060
Koulye a, ou ta ka mande, ki sa ki
k ap pase nan tout moun sa yo pakè

1023
00:46:25,060 --> 00:46:27,250
ki pa fè li sou wout la.

1024
00:46:27,250 --> 00:46:29,880
Oke, lè Mesye IP pa fè sa
resevwa yon rekonesans

1025
00:46:29,880 --> 00:46:32,160
ki te yon pake te
ou te resevwa nan tan akòz,

1026
00:46:32,160 --> 00:46:34,060
li tou senpleman voye yon pake ranplasman.

1027
00:46:34,060 --> 00:46:36,040

1028
00:46:36,040 --> 00:46:40,510
>> Nou se kounye a pare yo antre nan a
mond nan entènèt la, yon Spider

1029
00:46:40,510 --> 00:46:44,656
entènèt nan rezo konekte
ki travès glòb tout nou an.

1030
00:46:44,656 --> 00:46:47,845
Isit la, routeurs ak switch
etabli lyen ant rezo.

1031
00:46:47,845 --> 00:46:49,239

1032
00:46:49,239 --> 00:46:51,280
Koulye a, nèt la se yon antyèman
diferan anviwònman

1033
00:46:51,280 --> 00:46:53,740
pase w ap jwenn nan la
mi pwoteksyon nan LAN ou.

1034
00:46:53,740 --> 00:46:56,510
>> Soti isit la, li nan sovaj la
West, anpil espas,

1035
00:46:56,510 --> 00:47:00,440
anpil opòtinite, anpil nan
bagay yo eksplore, ak kote yo ale.

1036
00:47:00,440 --> 00:47:02,790
Mèsi a anpil ti
kontwòl ak règleman,

1037
00:47:02,790 --> 00:47:07,250
nouvo lide jwenn tè fètil pouse
anvlòp la nan posibilite yo.

1038
00:47:07,250 --> 00:47:10,590
Men, paske se nan libète sa a,
danje sèten tou pèsiste.

1039
00:47:10,590 --> 00:47:14,230
>> Ou pa janm pral konnen ki lè ou
satisfè ping la redoutable nan lanmò,

1040
00:47:14,230 --> 00:47:18,040
yon vèsyon espesyal nan yon demann nòmal
ping ki kèk moun sòt te panse moute

1041
00:47:18,040 --> 00:47:19,830
dezòd yo gen tout pouvwa a mefyan.

1042
00:47:19,830 --> 00:47:21,470

1043
00:47:21,470 --> 00:47:25,490
Chemen an pakè nou yo pran petèt atravè
satelit, liy telefòn, san fil,

1044
00:47:25,490 --> 00:47:27,340
oswa menm tranzoseanik kab.

1045
00:47:27,340 --> 00:47:30,290
>> Yo pa toujou pran pi rapid la
oswa pi kout wout posib,

1046
00:47:30,290 --> 00:47:33,330
men yo pral jwenn gen, evantyèlman.

1047
00:47:33,330 --> 00:47:37,255
Petèt sa a, poutèt sa li an pafwa
rele rete tann nan atravè lemond.

1048
00:47:37,255 --> 00:47:39,650
Men, lè tout bagay se
k ap travay fèt san pwoblèm, ou

1049
00:47:39,650 --> 00:47:43,270
te kapab kontourne glòb la senk
fwa sou nan gout nan yon chapo,

1050
00:47:43,270 --> 00:47:46,690
literalman, ak tout pou la
pri nan yon apèl lokal oswa mwens.

1051
00:47:46,690 --> 00:47:47,970

1052
00:47:47,970 --> 00:47:51,025
>> Prèske nan fen destinasyon nou an,
nou pral jwenn yon lòt firewall.

1053
00:47:51,025 --> 00:47:53,710

1054
00:47:53,710 --> 00:47:56,160
Tou depan de ou
pèspektiv kòm yon pake done,

1055
00:47:56,160 --> 00:48:00,520
pare-feu lan te kapab fè yon bastion
nan sekirite oswa redoutable lènmi.

1056
00:48:00,520 --> 00:48:04,420
Li tout depann sou ki bò ou se
sou li a, epi ki sa entansyon ou ye.

1057
00:48:04,420 --> 00:48:08,365
>> Se pare-feu a ki fèt kite nan sèlman
moun pakè ki satisfè kritè li yo.

1058
00:48:08,365 --> 00:48:09,590

1059
00:48:09,590 --> 00:48:11,940
Firewall Sa a se opere
sou pò 80 ak 25.

1060
00:48:11,940 --> 00:48:13,250

1061
00:48:13,250 --> 00:48:16,380
Tout eseye antre nan lòt
pò yo fèmen pou biznis.

1062
00:48:16,380 --> 00:48:27,690

1063
00:48:27,690 --> 00:48:30,600
>> Port 25 ki itilize pou pakè lapòs.

1064
00:48:30,600 --> 00:48:32,750

1065
00:48:32,750 --> 00:48:35,791
Pandan ke Port 80 se antre nan pou
pakè soti nan entènèt la nan entènèt la

1066
00:48:35,791 --> 00:48:36,290
sèvè.

1067
00:48:36,290 --> 00:48:38,880

1068
00:48:38,880 --> 00:48:42,540
Anndan firewall, pakè yo
yo tès depistaj plis byen.

1069
00:48:42,540 --> 00:48:44,660
Gen kèk pakè fè li
fasilman nan koutim,

1070
00:48:44,660 --> 00:48:47,500
pandan ke lòt moun gade jis yon ti jan ézitan.

1071
00:48:47,500 --> 00:48:49,630
>> Koulye a, ofisye a firewall
pa fasil pou twonpe,

1072
00:48:49,630 --> 00:48:53,010
tankou lè sa a ping
nan ap eseye pake lanmò

1073
00:48:53,010 --> 00:48:55,628
degize tèt li kòm
yon ping pake nòmal.

1074
00:48:55,628 --> 00:48:56,128
-Move Ansanm.

1075
00:48:56,128 --> 00:48:56,606
Li nan OK.

1076
00:48:56,606 --> 00:48:57,106
Pa gen pwoblèm.

1077
00:48:57,106 --> 00:48:58,040
Ou gen yon jou bèl.

1078
00:48:58,040 --> 00:48:59,360
Kite m 'outa isit la.

1079
00:48:59,360 --> 00:49:00,460
Bye.

1080
00:49:00,460 --> 00:49:02,990
>> -Pou Moun pakè chans
ase yo fè li sa a byen lwen,

1081
00:49:02,990 --> 00:49:04,860
vwayaj la se prèske sou.

1082
00:49:04,860 --> 00:49:07,280

1083
00:49:07,280 --> 00:49:11,560
Se jis nan yon liy moute sou koòdone nan
li dwe te pran moute nan sèvè a entènèt.

1084
00:49:11,560 --> 00:49:12,610

1085
00:49:12,610 --> 00:49:16,850
Sèjousi, yon sèvè sit entènèt ka kouri sou anpil
bagay sa yo, ki sòti nan yon mainframe, nan yon webcam,

1086
00:49:16,850 --> 00:49:18,430
nan òdinatè a sou biwo ou.

1087
00:49:18,430 --> 00:49:20,220
Poukisa nou pa frijidè ou a?

1088
00:49:20,220 --> 00:49:22,140
>> Avèk seri a apwopriye
leve, ou ta ka jwenn soti

1089
00:49:22,140 --> 00:49:24,330
si ou gen tournaj yo
pou poul kaksyator

1090
00:49:24,330 --> 00:49:25,690
oswa si w gen yo ale fè makèt.

1091
00:49:25,690 --> 00:49:28,625
Sonje byen, sa a se Dawn a nan Net la.

1092
00:49:28,625 --> 00:49:29,850
Prèske anyen nan sa posib.

1093
00:49:29,850 --> 00:49:32,960

1094
00:49:32,960 --> 00:49:37,080
>> Youn pa youn, pakè yo se
resevwa, louvri, epi anbalaj.

1095
00:49:37,080 --> 00:49:40,350

1096
00:49:40,350 --> 00:49:44,280
Enfòmasyon ki yo genyen ladan yo, ki
se demann ou an pou enfòmasyon,

1097
00:49:44,280 --> 00:49:46,080
se voye sou nan entènèt la
sèvè aplikasyon.

1098
00:49:46,080 --> 00:49:52,670

1099
00:49:52,670 --> 00:49:54,345
>> Se pake nan tèt li resikle.

1100
00:49:54,345 --> 00:49:57,280

1101
00:49:57,280 --> 00:50:06,770
Pare yo dwe itilize ankò ak plen ak
enfòmasyon yo mande ou, adrese,

1102
00:50:06,770 --> 00:50:08,680
e pou voye soti sou wout li tounen ba ou.

1103
00:50:08,680 --> 00:50:10,430

1104
00:50:10,430 --> 00:50:14,700
Retounen sot pase firewall, routeurs yo,
ak sou nan nan entènèt la.

1105
00:50:14,700 --> 00:50:18,164

1106
00:50:18,164 --> 00:50:19,705
Retounen nan pare-feu antrepriz ou.

1107
00:50:19,705 --> 00:50:24,461

1108
00:50:24,461 --> 00:50:26,295
Ak sou koòdone ou yo.

1109
00:50:26,295 --> 00:50:27,400

1110
00:50:27,400 --> 00:50:30,630
Pare yo bay navigatè entènèt ou
ak enfòmasyon an ou mande a.

1111
00:50:30,630 --> 00:50:33,010

1112
00:50:33,010 --> 00:50:34,538
Sa se sa a fim.

1113
00:50:34,538 --> 00:50:40,030

1114
00:50:40,030 --> 00:50:43,200
>> Kontan ak efò yo ak
kwè nan yon mond pi bon,

1115
00:50:43,200 --> 00:50:45,960
pakè konfyans done nou an
monte nan blissfully

1116
00:50:45,960 --> 00:50:49,830
nan solèy kouche a nan yon lòt
jou, konnen konplètman yo

1117
00:50:49,830 --> 00:50:51,635
te sèvi mèt yo byen.

1118
00:50:51,635 --> 00:50:54,030

1119
00:50:54,030 --> 00:50:57,209
Koulye a, se pa sa ki yon fini kontan.

1120
00:50:57,209 --> 00:50:58,042
[Lèktur videyo END]

1121
00:50:58,042 --> 00:50:59,533
DAVID Malan: Sa a li pou CS50.

1122
00:50:59,533 --> 00:51:01,521
Nou pral wè ou an semèn pwochèn.

1123
00:51:01,521 --> 00:51:05,994

1124
00:51:05,994 --> 00:51:11,220
>> [Klas Mizik - Katy Perry, "fè nwa HORSE"]

1125
00:51:11,220 --> 00:54:19,222