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Together with the network layer,the tran
Together with the network layer,the tran
考试题库
2022-08-02
50
问题
Together with the network layer,the transport layer is the heart of the protocol( )The network layer provides end-to-end( ) delivery using datagrams or virtual circuits.The transport layer builds on the network layer to provide data transport from a process on a( )machine to a process on a destination machine with a desired level of reliability that is independent of the physical ( ) currently in use.It provides the abstractions that applications nedd to use the network..Without the( ) layer,the whole concept of layered protocols would make little sense.A.packetB.dataC.commandD.record
选项
A.packet
B.data
C.command
D.record
答案
A
解析
传输层与网络层都是协议层次的心脏。网络层通过数据报或虚电路提供了端到端的分组提交服务。传输层建立在网络层之上,提供从源主机进程到目标主机进程的数据传输,这种传输的可靠性级别与当前使用的物理网络无关。这对使用网络通信的应用是一种抽象。没有传输层,整个协议层次的概念就没有意义了。
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本试题收录于:
初级网络管理员题库软件水平考试初中高级分类
初级网络管理员
软件水平考试初中高级
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