單項(xiàng)選擇題

IP地址是202.114.18.190,子網(wǎng)掩碼255.255.255.192,其子網(wǎng)編號(hào)的多少?()

A.202.114.18.128
B.202.115.18.64
C.202.115.18.32
D.202.115.18.0

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