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單項(xiàng)選擇題

You have been allocated a /22 network. How many usable hosts are available?（）

A. 510
B. 512
C. 1022
D. 1024

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單項(xiàng)選擇題

What are the usable hosts on the .128.0/19 network?（）

A. .128.1 through .143.254
B. .128.128 through .134.254
C. .128.0 through .134.254
D. .128.1 through .159.254

單項(xiàng)選擇題

You must segment your internal /24 network into a minimum of 12 subnets, each containing a minimum of 12 hosts. Which network mask do you use?（）

A. /26
B. /27
C. /28
D. /29