CCDE Practical Exam — Question 12

Which feature should be disabled on a bridge domain when a default gateway for endpoints is on an external device instead of a Cisco ACI bridge domain SVI?

Answer options

• A. unicast routing
• B. ARP flooding
• C. unknown unicast flooding
• D. proxy ARP

Correct answer: C

Explanation

The correct answer is C, as disabling unknown unicast flooding prevents the bridge domain from broadcasting packets to unknown destinations, which is appropriate when the default gateway is external. Options A, B, and D do not directly relate to the need to manage unknown unicast traffic in this scenario and can remain enabled.