AWS Certified Advanced Networking – Specialty (ANS-C00) — Question 178

You are configuring multiple Direct Connect links for your organization and need them to be in an HA Active/Passive configuration with extreme sensitivity to outages in order to encourage very quick failover times. You also need to be able to control which link is active.
What two configuration changes should you implement? (Choose two.)

Answer options

Correct answer: B, C

Explanation

The correct answers are BFD and AS_PATH Prepending. BFD (Bidirectional Forwarding Detection) is crucial for quickly detecting link failures, allowing for swift failover. AS_PATH Prepending can be used to influence routing decisions to control which Direct Connect link is preferred as the active one, while MPLS and BGP do not provide the necessary failover sensitivity in this context.