AWS Certified Advanced Networking – Specialty (ANS-C00) — Question 254

You are a holdings company that buys many businesses and must integrate their VPCs into your network. You are constantly encountering networks with similar or overlapping subnets.
What is the best way to manage this.

Answer options

• A. BFD
• B. VRF
• C. A standby router for the overlapping subnets.
• D. A strict IP addressing policy that forces new companies to change the IP addresses of their VPCs.

Correct answer: B

Explanation

The correct answer is B, as VRF (Virtual Routing and Forwarding) allows multiple instances of a routing table to coexist on the same router, thus enabling the management of overlapping IP addresses. Options A and C do not address the issue of overlapping subnets effectively, and option D may lead to resistance from acquired businesses, making it less practical.