问答题
Which OSPF network type is ideal for partially meshed NBMA networks because it is easy to configure（requires no configuration of neighbor commands）， consumes only one IP subnet， and requires no designated router election？
Point-to-multipoint.
问答题 WhichOSPFfeatureallowsaroutertocontinuetoforwardpacketswhileundergoingspecific，well-knownfailureconditions？
问答题 WhyareRegistermessagesneededinPIMSM？
问答题 switchortport-securityviolation选择shutdown表示什么意思？
