單項選擇題IP地址132.119.100.200的子網(wǎng)掩碼是255.255.255.224,哪么它所在的IP子網(wǎng)地址是()。

A.132.119.100.0
B.132.119.100.192
C.132.119.100.193
D.132.119.100.128


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