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單項(xiàng)選擇題

Which of the following protocols is used to disable switch ports automatically to prevent switchingloops?（）

A.RIP
B.0S：F
C.STP
D.EGP

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單項(xiàng)選擇題

Which of the following uses copper wiring?（）

A.10GBase-ER
B.10GBase-LW
C.100Base-FX
D.1000Base-T

單項(xiàng)選擇題

Which of the following is a secure method of remote access via command line?（）

A.RCP
B.Telnet
C.RSH
D.SSH