题目详情

通过HFC接入Internet,用户端通过(  )连接因特网。

  • A.ADSLModem
  • B.CableModem
  • C.IPRouter
  • D.HUB

正确答案及解析

正确答案
B
解析

在同轴电缆的技术方案中,用户端需要使用一个称为CableModem(电缆调制解调器)的设备,它不单纯是一个调制解调器,还集成了调谐器、加/解密设备、桥接器、网络接口卡、虚拟专网代理和以太网集线器的功能于一身,它无须拨号,可提供随时在线的永远连接。

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