单项选择题
A.IEEE802.11n B.IEEE802.11a C.IEEE802.11b D.IEEE802.11g
A.FF05:0000:B300 B.FF05:0:0:0:0:0:0:B300 C.FF05:0000:00B3 D.FF05:0:0:0:0:0:0:00B3
A.172.17.17.255/23 B.172.17.16.255/23 C.172.17.17.255/22 D.172.17.31.255/22