Alcatel-Lucent NRS I – Interior Routing Protocols and High Availability — Question 32

Link-state PDUs include an age field. Which of the following is FALSE?

Answer options

• A. When link-state information reaches the maximum age on a router, the router will flood that information to its neighbors.
• B. When a router detects that any of its link-state information has reached the maximum age, it will request a new update from the source router.
• C. Aging helps ensure that links, which are no longer part of the topology, will eventually get removed from the LSDB.
• D. The age value is updated as the information is flooded throughout the network and when it is in the LSDB.

Correct answer: B

Explanation

The correct answer is B because routers do not request new updates for link-state information that has reached maximum age; instead, they simply remove the outdated information. Options A, C, and D are true statements regarding how link-state PDUs and their age field function within a network.