多项选择题
Which two statements about VPLS are true？ （）
A.There is a full mesh of pseudowires. B.There is a partial mesh of pseudowires. C.Only L2TPv3 can be used for pseudowire establishment. D.There is split-horizon to avoid loops.
单项选择题 IntheApacheWebServerconfiguration，thecommandKeepAliveONisusedto（）
多项选择题 WhichofthefollowingisreportedintheLMIregularstatuspolling？（）
单项选择题 WhatistrueregardingCiscoNetworkRegistrarinCablenetworks？（）
