试题与答案

下列网络互连设备中,属于物理层的是(66),属于网络层的是(67)(67)处填()。

题型:单项选择题

题目:

下列网络互连设备中,属于物理层的是(66),属于网络层的是(67)

(67)处填()。

A.中继器

B.交换机

C.路由器

D.网桥

答案:

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