URL consists of three parts: the protocol(75), the DNS name of the host (www.csai.cn) and the file name (index.html).

A．IP

B．UDP

C．TCP

D．HTTP

[单选题]（）has three parts: warehouse, night story shelf and stacker.A . Multi-story warehouseB . Automatic Multi-story warehouseC . stereo-style warehouseD . stereoscopic warehouse

[单选题]（）has three parts: warehouse, high story shelf and stacker.A . Multi-story warehouseB . Automatic Multi-story-warehouseC . Stereo-style warehouseD . Stereoscopic warehouse

[单选题]URLs have three parts：the DNS name of machine on which the page is located，then a local name uniquely indicating the specific page andA．ProtocolB．IP addressC．Network nameD．Server name

[单选题]England is an island country. ________ consists of three principal islands,

[判断题]The AWB number consists of a three-digit prefix and check digit foraccounti

[判断题]The AWB number consists of a three-digit prefix andcheck digit for accounti

[主观题]TCP/IP(Transmission Control Protoco/Internet Protocol)指传输控制协议。()

[试题]The TCP protocolis a (71) layer protocol. Each connection connects two TCPs that may be just one physical network apart or located on opposite sides ofthe globe. In other words, each connection creates a (72) witha length that may be totally different

[单选题]A． ______ consists of the symbols, characters, and usage rules that permit people to communicate with computer.A．programming languageB．networkC．keyboardD．DisplayA．B．C．D．

[单选题]4KB consists of ( ) .A．4096 bytesB．4000 bytesC．4096 bitsD．4000 bits