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Which two statements are true about broadband cable (HFC) systems?()

发布日期:2021-09-16

Which two statements are true about broadband cabl...
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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儿科护理主管护师(中级)

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