Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) — Question 151

What is the difference between the MAC address table and TCAM?

Answer options

• A. TCAM is used to make L2 forwarding decisions. CAM is used to build routing tables.
• B. Router prefix lookups happen in CAM. MAC address table lookups happen in TCAM.
• C. The MAC address table supports partial matches. TCAM requires an exact match.
• D. The MAC address table is contained in CAM. ACL and QoS information is stored in TCAM.

Correct answer: D

Explanation

The correct answer is D because the MAC address table is indeed stored in CAM, which is designed for exact matches, while TCAM is used for more complex operations like ACLs and QoS. Options A and B incorrectly describe the roles of TCAM and CAM, and option C misrepresents the matching capabilities of each system.