CCNA: Cisco Certified Network Associate — Question 453

Why would VRRP be implemented when configuring a new subnet in a multivendor environment?

Answer options

• A. when a gateway protocol is required that supports more than two Cisco devices for redundancy
• B. to interoperate normally with all vendors and provide additional security features for Cisco devices
• C. to ensure that the spanning-tree forwarding path to the gateway is loop-free
• D. to enable normal operations to continue after a member failure without requiring a change in a host ARP cache

Correct answer: D

Explanation

The correct answer, D, indicates that VRRP allows for continuous operation even when a router fails, which is crucial for maintaining connectivity without requiring updates to the ARP cache. Options A and B are incorrect because they focus on redundancy and interoperability rather than the specific operational continuity provided by VRRP. Option C is also incorrect as it pertains to spanning-tree protocols rather than the specific function of VRRP.