For any of the LFA methods to work properly, there must be a router in the backup path that will forward traffic addressed to the destination without sending it back to the source. Which of the following statements describes the way R-LFA selects such a router?
R-LFA (Remote Loop-Free Alternate) selects a remote router that is reachable through a tunnel defined by a single Node-SID. This router ensures that traffic can be forwarded to the destination without being sent back to the source, maintaining a loop-free backup path. The Node-SID is used to create a tunnel to the selected remote router, providing an efficient and effective redirection of traffic in case of primary path failure.
not sure but B looks the correct one
C is false as that describes directed LFAs, immediate neighbor is also false and D describes something closer to TI0LFA. B is the correct answer as remote LFA creates a tunnel to the PQ neighbor using a node SID