TCP/IP(71)layer protocols provide services to the application(72)running on a computer. The application layer does not define th

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问题 TCP/IP(71)layer protocols provide services to the application(72)running on a computer. The application layer does not define the application itself, but rather it defines(73)that applications need — like the ability to transfer a file in the case of HTTP. In short, the application layer provides an(74)between software running on a computer and the network itself. The TCP/IP application layer includes a relatively large number of protocols, with HTTP being only one of those. The TCP/IP(75)layer consists of two main protocol options — the Transmission Control Protocol(TCP)and the User Datagram Protocol(UDP).

选项 A、application
B、transport
C、link
D、network

答案A

解析
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