單項選擇題當(dāng)網(wǎng)絡(luò)地址35.0.0.0使用8個二進制位作為子網(wǎng)地址時,它的子網(wǎng)掩碼為()

A.255.0.0.0
B.255.255.0.0
C.255.255.255.0
D.255.255.255.255