What is the purpose of VRRP?

• A. To route between different ASes
• B. To increase the availability of the default gateway servicing hosts on the same subnet
• C. To provide dynamic DNS
• D. To monitor link quality

Answer: (B)

VRRP provides high availability for the default gateway on a local subnet by creating a shared virtual router. A virtual IP address is used as the gateway for all hosts, with one router designated as the master that answers traffic for that virtual IP and backs you up routers serving as backups. If the master fails, a backup takes over, and devices continue to reach the gateway without reconfiguring anything. This goal—keeping the default gateway reachable and minimizing downtime on the subnet—is exactly what VRRP is designed to achieve. It isn’t about routing between autonomous systems, dynamic DNS, or monitoring link quality.