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單項(xiàng)選擇題

Which of the following allows a technician to mask a private network of IP addresses behind onepublic IP address?（）

A.NAT
B.Subnetting
C.DHCP
D.DNS

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單項(xiàng)選擇題

An administrator finds a phone line but does not know where the line goes or if it is active. Whichof the following can be used to test if it is active?（）

A. Butt set
B. Punch down tool
C. Cable teste
D. Cable stripper

單項(xiàng)選擇題

Which of the following devices would allow a technician using a packet sniffer to view all the dataon a network?（）

A.GBIC
B.Hub
C.Bridge
D.Modem

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