AWS Certified Advanced Networking – Specialty (ANS-C00) — Question 141

Your company is connecting one data center with one router to several VPCs and needs to access them transitively. What should you do?

Answer options

• A. Create a VPN to one VPC and peer the others.
• B. This is not possible.
• C. Use a transit VPC with a VPN running on one or more EC2 instances to route traffic between the VPCs.
• D. Just connect; VPCs are transitive in nature.

Correct answer: C

Explanation

The correct answer is C because a transit VPC setup enables routing traffic between multiple VPCs via a central point, which is essential for transitive access. Option A is incorrect as it only connects one VPC directly and requires additional peering setups. Option B is wrong because transitive access is achievable with the right configuration. Option D is misleading, as VPCs do not naturally support transitive routing without specific configurations.