Implementing Cisco IP Routing (CCNP ROUTE, legacy) — Question 76

Which action can you take to mitigate unicast flooding in a network?

Answer options

• A. Configure VLANs to span multiple access-layer switches.
• B. Implement a nonlooped network topology.
• C. Set the ARP timer value to less than the CAM timer value.
• D. Set the CAM timer value to less than the ARP timer value. C

Correct answer:

Explanation

The correct answer is C, as setting the ARP timer value to less than the CAM timer value helps to ensure that ARP entries expire quickly, reducing the likelihood of unicast flooding. Option A does not directly address unicast flooding, while option B focuses on preventing loops but does not mitigate flooding. Options D and C are opposites; setting the CAM timer value to be less than the ARP timer would lead to longer retention of MAC addresses, potentially increasing flooding.