单项选择题
A.Switches take less time to process frames than hubs take.
B.Switches do not forward broadcasts.
C.Hubs can filter frames.
D.Using hubs can increase the amount of bandwidth available to hosts.
E.Switches increase the number of collision domains in the network.
多项选择题 WhichstatementsaretrueaboutEIGRPsuccessorroutes?(Choosetwo.)（）
多项选择题 Thenetworksecuritypolicyrequiresthatonlyonehostbepermittedtoattachdynamicallytoeachswitchinterface.Ifthatpolicyisviolated,theinterfaceshouldshutdown.Whichtwocommandsmustthenetworkadministratorconfigureonthe2950Catalystswitchtomeetthispolicy?(Choosetwo.)（）
多项选择题 WhydoesthedatacommunicationindustryusethelayeredOSIreferencemodel?(Choosetwo.)（）