CCNA Routing and Switching (legacy) — Question 171

Which protocol advertises a virtual IP address to facilitate transparent failover of a Cisco routing device?

Answer options

• A. FHRP
• B. DHCP
• C. RSMLT
• D. ESRP

Correct answer: A

Explanation

The correct answer is A, FHRP, which stands for First Hop Redundancy Protocol, designed specifically for providing redundancy and failover by advertising a virtual IP address. Options B (DHCP) is used for dynamic IP address allocation, C (RSMLT) is related to switched environments, and D (ESRP) is less commonly used for failover and does not specifically advertise a virtual IP address.