After HSB is configured, the HSB channel fails to be established and cannot back up information on the
active device to the standby device. What are the possible causes for this HSB function failure?
See the network shown in the following figure. R1 and R2 run IS-IS and establish an adjacency. IS-IS is enabled on Loopback0 of R2 but disabled on
Loopback3 of R2. The configurations shown in the figure are performed in the IS-IS process of R2. Which of
the following statements are true?
The BFD Echo function checks the connectivity of the forwarding link by looping back packets. Which of the
following statements are true about this function?
An enterprise administrator configures route summarization on ASBRs to reduce the number of inter-area
Type 3 LSAs, which in turn reduces the routing table size and improves device resource utilization.