AWS Certified Advanced Networking – Specialty (ANS-C00) — Question 3

A network engineer is managing two AWS Direct Connect connections. Each connection has a public virtual interface configured with a private ASN. The engineer wants to configure active/passive routing between the Direct Connect connections to access Amazon public endpoints. What BGP configuration is required for the on-premises equipment? (Choose two.)

Answer options

• A. Use Local Pref to control outbound traffic.
• B. Use AS Prepending to control inbound traffic.
• C. Use eBGP multi-hop between loopback interfaces.
• D. Use BGP Communities to control outbound traffic.
• E. Advertise more specific prefixes over one Direct Connect connection.

Correct answer: A, E

Explanation

Using Local Pref is crucial for controlling outbound traffic preferences, making option A correct. Advertising more specific prefixes over one Direct Connect connection can help in establishing preferred routes, which is why option E is also correct. The other options do not directly address the requirements for configuring active/passive routing in this scenario.