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4A0-101 Exam - Question 45


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

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Correct Answer: B

Link-state PDUs include an age field that determines the validity of the link-state information. When the age reaches its maximum value, the information is considered obsolete and is removed from the LSDB (Link-State Database), not requested anew from the source router. Instead, the router will flood this information to its neighbors to ensure all routers within the network have the most up-to-date information. This process helps maintain an accurate representation of the network topology in all routers' LSDBs. Aging ensures that stale information is eventually purged from the network to prevent routing issues.

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atilio76Option: C
Sep 14, 2022

correct answer is C: Link-state information also includes an age field. The age is changed as the information is flooded and while it is held in the LSDB. When the link-state information reaches its maximum age, it is no longer considered valid and is removed from the LSDB.