(2010年下半年)OSI is a theoretical model that shows how any two different systems can communicate with each other.Router,as a networ

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问题 (2010年下半年)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(71)layer ofthe OSI model.

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

答案C

解析 OSI是一个理论模型,描述了任意两个不同的系统如何相互通信。路由器,作为一 个网络设备,工作在OSI模型的(71)层。
A.传输
B.应用
C.网络
D.物理
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