单项选择题
A.冒号十六进制 B.点分十进制 C.冒号十进制 D.点分十六进制
A.unicast B.broadcast C.multicast D.anycast
A.DHCP Request B.DHCP Release C.DHCP Inform D.DHCP Decline E.DHCP ACK F.DHCP OFFER
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