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單項(xiàng)選擇題

A technician needs to manage a switch by using the management port on the back of the switch.Which of the following cables would the technician use?（）

A.Straight
B.Console
C.Crossover
D.Loopback

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單項(xiàng)選擇題

Which of the following would MOST likely be used to punch down LAN cables before connecting them to the main switch?（）

A. IDF
B. 66 block
C. MDF
D. 110 block

單項(xiàng)選擇題

In which of the following layers of the OSI model does the TCP protocol operate?（）

A.Session
B.Network
C.Data link
D.Transport