Implementing Cisco ACI Advanced (DCACIA) — Question 77

What is a characteristic of a stretched bridge domain solution between Cisco ACI sites with Layer 2 flood enabled?

Answer options

• A. BUM traffic between sites leverages ISN multicast replication.
• B. The solution reduces control plane overhead.
• C. Spine head-end replication is used to forward BUM traffic between sites.
• D. Contracts are local to the provided site.

Correct answer: C

Explanation

The correct answer is C because spine head-end replication is specifically designed to handle BUM traffic across different sites in a stretched bridge domain. Option A is incorrect as it refers to ISN multicast replication, which is not applicable here. Option B is misleading since control plane overhead may not necessarily be reduced in this scenario. Option D is inaccurate as contracts are not limited to a single site in a stretched configuration.