试题内容
在HFC网络中,Cable Modem的作用是 ( ) 。
A、用于调制解调和拨号上网
B、用于调制解调以及作为以太网接口
C、用于连接电话线和用户终端计算机
D、连接ISDN接口和用户终端计算机
软题库参考答案:B(仅供参考)
软题库解析:正在加载....
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