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單項選擇題

You have been asked to use a 25 bit subnet mask to segment the following network block:
209.18.12.0.
How many usable will there be per subnet?（）

A.2 hosts
B.120 hosts
C.126 hosts
D.255 hosts

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單項選擇題

What are the usable hosts on the 200.50.12.64/26 network?（）

A..65 through .126
B..64 through .127
C..66 through .128
D..65 through .127

單項選擇題

What are the usable hosts on the 192.168.1.24/29 network?（）

A..24 through .48
B..24 through .32
C..25 through .30
D..35 through .31

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