多项选择题
A.BPDUs that enter a blocking port are discarded.
B.BPDUs that enter a blocking port are processed.
C.Loopguard puts an interface into a loop-inconsistent state when BPDUs stop being received on a blocking port.
D.BPDUs are only processed on forwarding ports.
多项选择题 WhichtwostatementsbestdescribeCBWFQ？（）
多项选择题 Whichtwostatementsaretrueabouttheroleofsplithorizon？（）
多项选择题 Asanetworkengineer，youresponsibilityistoinstall，configure，operate，andtroubleshootnetworks.Inyourcompany’snetwork，EIGRPistheroutingprotocol.Youhavejustdiscoveredthattworoutersrestartedtheneighborrelationship.Why？（）