Implementing Cisco Application Centric Infrastructure (DCACI) — Question 213

When Layer 3 routed traffic is destined to a Cisco ACI fabric, which mechanism does ACI use to detect silent hosts?

Answer options

• A. gratuitous ARP
• B. ARP gleaning
• C. proxy ARP
• D. inverse ARP

Correct answer: B

Explanation

The correct answer is B, ARP gleaning, which allows ACI to recognize hosts that are not actively responding to ARP requests. Other options like gratuitous ARP and proxy ARP serve different purposes, such as advertising IP addresses or responding to ARP requests, but do not specifically detect silent hosts.