多项选择题
Cisco IOS XR Software Multicast Routing Implementation， which three features are supported in IPv6 onCisco CRS router？（）
A.PIM-SSM B.Aggregation multicast C.PIM-Bidirectional D.OOR handling E.integrated multicast F.Multicast NSF
单项选择题 Whichoptionisnotavalidmethodtoassignthelowest-order64-bitfieldofanIPv6unicastaddress？（）
多项选择题 Whichtworouterssupportcableaccess？（）
单项选择题 AssumethatthePEsareseparatedbyMultipleProuters.HowmanylabelsshouldtheingressPEpushforBPEfunctionality？（）
