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Cable Modem系统结构说明。
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Which of the following is the proper order for powering off and on network components?()
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下列选项中，关于Cable Modem的类型叙述不正确的是( )。A．从传输方式分，Cable Modem可分为双向对称式传输和非对称式传输B．从同步方式分，Cable Modem可分为同步交换和异步交换C．从接入角度分，Cable Modem可分为单向和双向D．从接口角度分，Cable Modem可分为外置式、内置式和交互式机顶盒
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Which two statements are true about broadband cable （HFC） systems？（）A、Cable modems only operate at Layer 1 of the OSI model.B、Cable modems operate at Layers 1 and 2 of the OSI model.C、Cable modems operate at Layers 1， 2， and 3 of the OSI model.D、A function of the cable modem termination system （CMTS） is to convert the modulated signal from the cable modem into a digital signal.E、A function of the cable modem termination system is to convert the digital data stream from the end user host into a modulated RF signal for transmission onto the cable system.
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Router cable modem computer
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问答题简述Cable Modem的系统结构以及各个部分的功能.
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