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單項(xiàng)選擇題

Which of the following would be used to connect two IDFs in the same building with the LAN, whileminimizing crosstalk?（）

A.RG-6
B.STP
C.CAT3
D.UTP

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單項(xiàng)選擇題

Which of the following protocols uses UDP to transfer files?（）

A.FTP
B.SFTP
C.SMTP
D.TFTP

單項(xiàng)選擇題

Which of the following is used to serve as an emergency backup line to troubleshoot a broadbandconnection on many routers?（）

A.DSL
B.POTS
C.VDSL
D.Smart jack

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