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單項選擇題

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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單項選擇題

An administrator wants to test the network MTU. Which of the following commands allows differentsize packets to be sent?（）

A.netstat
B.traceroute
C.nbtstat
D.ping

單項選擇題

An administrator suspects that an incorrect POTS line is carrying the DSL signal. Which of thefollowing will help diagnose this issue?（）

A. Multimeter
B. Toner probe
C. Protocol analyzer
D. Butt set

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