AWS Certified Advanced Networking – Specialty (ANS-C00) — Question 121

You have a DX connection and a VPN connection as backup for your 10.0.0.0/16 network. You just received a letter indicating that the colocation provider hosting the DX connection will be undergoing maintenance soon. It is critical that you do not experience any downtime or latency during this period.
What is the best course of action?

Answer options

• A. Configure the VPN as a static VPN instead of dynamic.
• B. Configure AS_PATH Prepending on the DX connection to make it the less preferred path.
• C. Advertise 10.0.0.0/9 and 10.128.0.0/9 over your VPN connection.
• D. None of the above.

Correct answer: D

Explanation

The correct answer is D because none of the provided options would effectively prevent downtime or latency during the maintenance of the DX connection. Configuring a static VPN (A) or AS_PATH Prepending (B) does not address the underlying issue, and advertising a larger subnet over the VPN (C) could lead to routing issues rather than ensuring a stable connection.