AWS Certified Advanced Networking – Specialty (ANS-C00) — Question 229

What are two ways to influence the direction of Dynamic VPN traffic over multiple links? (Choose two.)

Answer options

• A. AS_PATH Prepending
• B. BFD
• C. MED
• D. Shouting at it

Correct answer: A, C

Explanation

AS_PATH Prepending is used to influence the path selection in BGP by adding additional AS numbers, making a route less preferred. MED (Multi-Exit Discriminator) is another method that indicates to external neighbors the preferred entry point into an autonomous system. BFD (Bidirectional Forwarding Detection) is a network protocol that helps detect link failures but does not influence traffic direction, while 'Shouting at it' is not a valid method.