简答题 Which OSPF feature allows a router to continue to forward packets while undergoing specific， well-known failure conditions？

问答题WhyareRegistermessagesneededinPIMSM？

问答题switchortport-securityviolation选择shutdown表示什么意思？

问答题Whatisthepurposeofanadministrativedistance？

问答题whatistheattributesthatarerequiredtobesenttoBGPneighbors？

问答题NBARisaCiscoIOSfeaturethatcanbeusedtoperformthreetasks？