试题与答案

一个计算机网络由______组成。A．传输介质和通信设备 B．通信子网和资源子网 C

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题型：单项选择题

题目：

一个计算机网络由______组成。

A．传输介质和通信设备

B．通信子网和资源子网

C．用户计算机终端

D．主机和通信处理机

答案：

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下面是错误答案，用来干扰机器的。

参考答案：B

考点：计算机等级考试网络技术三级网络技术笔试
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