ICND1: Interconnecting Cisco Networking Devices Part 1 (CCENT, legacy) — Question 22

How can you prevent a MAC address from aging out of the MAC address table?

Answer options

• A. Clear the MAC address table.
• B. Disable the MAC address aging timer.
• C. Manually enter the MAC address into the MAC address table.
• D. Enable IGMP snooping.

Correct answer: C

Explanation

The correct answer is C, as manually entering the MAC address into the table ensures it remains there indefinitely. Option A is incorrect because clearing the table removes all entries, and option B, while it might prevent aging, is not a permanent solution for a specific MAC address. Option D is unrelated to MAC address aging.