BFD judges whether a fault occurs by periodically detecting packets, which is a fast fault detection mechanism relying on routing protocols.
Answer : B
Which of the following Hello packets is not included in the IS-IS protocol?
Answer : B
As shown in the figure, private network routing information is exchanged between PE1 and PE2 and their respective CEs through SPF, and the same Domain ID is declared on both PE1 and PE2. When importing routes from BGP to OSPF on PE2, which of the following types of LSAs may be delivered to CE2?
Answer : A, B, C
After the establishment of the RPT village, what is the wrong description about the SPT switching?
Answer : D
RTA is the source DR router and RTB is the RP router. The multicast source sends multicast data to the RIA, but the RIB cannot see the multicast source registered to it through the PIM Register message. What are the possible reasons?
Answer : A, B, C, D
