單項選擇題已知某主機(jī)IP地址:192.168.23.40,子網(wǎng)掩碼:255.255.255.0,則IP地址的網(wǎng)絡(luò) ID為()。 

A.192.168.23.40
B.192.0.0.0
C.192.168.0.0
D.192.168.23.0


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