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单项选择题
A.Ipconfig/registerdns
B.Ipconfig/displaydns
C.ipconfig/cleardnscache
D.ipconfig/flushdns
单项选择题
A.10Mbps;IEEE802.3
B.100Mbps;IEEE802.3
C.100Mbps;IEEE802.3u
D.100Mbps;IEEE802.3z
单项选择题
A.100Base-T4
B.100Base-TX
C.100Base-FX
D.100Base-CX