單項(xiàng)選擇題

An administrator is deploying three B/G wireless access points in a new office location. Which ofthe following channels eliminates interference?（）

A.1，6，and 11
B.3，6，and 9
C.11，16，and 20
D.36，40，and 44

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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

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