OSI is a theoretical model that shows ho

题库2022-08-02  11

问题 OSI is a theoretical model that shows how any two different systems can communicate with each other. Router, as a networking device operate at the()layer of the OSI modelA.transportB.applicationC.networkD.physical

选项 A.transport
B.application
C.network
D.physical

答案 C

解析 OSI是Open System Interconnect的缩写,意为开放式系统互联。国际标准组织制定了OSI模型。这个模型把网络通信的工作分为7层,分别是物理层、数据链路层、网络层、传输层、会话层、表示层和应用层。路由器(Router)是运行在OSI中网络层(network)上的网络通信设备,而不是传输层(transport layer)、应用层(application layer),或物理层(physical layer),因此选C
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