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

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

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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

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