单项选择题
A.4 B.6 C.8 D.10
A.127.2.3.5 B.1.255.255.2/24 C.255.23.200.9 D.192.240.150.255/24
A.IP地址B.IPX地址C.LLC地址D.MAC地址
A.255.0.0.0 B.255.255.255.0 C.255.255.0.0. D.255.255.0.0
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