AWS Certified Advanced Networking – Specialty (ANS-C00) — Question 200

You have several VPCs that are peered. Each VPC has several routes to different subnets. Over the years, your company has acquired many companies. You find that traffic destined for one VPC ends up going to another.
What is the best way to remedy this?

Answer options

• A. Move the route table entry for the proper VPC higher in the list.
• B. Adjust your routes so the proper VPC has a higher CIDR.
• C. Move the route table entry for the proper VPC lower in the list.
• D. Adjust your routes so the proper VPC has a lower CIDR.

Correct answer: B

Explanation

The correct answer is B because adjusting the routes to give the proper VPC a higher CIDR allows it to take precedence over other routes. Options A and C incorrectly suggest moving the entry in the route table without addressing the CIDR issue, while option D suggests a lower CIDR, which would not provide the intended prioritization.