AWS Certified Advanced Networking – Specialty (ANS-C00) — Question 253

You manage a website that uses a load balancer. You are noticing one of the servers is receiving more traffic than the other. What is probably the cause of this?

Answer options

• A. An Elastic Load Balancer sends traffic based on server load. One server must be a larger instance.
• B. You have DNS latency routing set, so it is diverting traffic to a different instance.
• C. You have sticky sessions configured and there are several power users that happen to be on the other server.
• D. The server has more connections available.

Correct answer: C

Explanation

The correct answer is C because sticky sessions cause requests from the same user to consistently be directed to the same server, which can result in uneven traffic distribution if certain users are highly active. Options A and D do not account for user behavior, while B discusses DNS settings that would not specifically cause one server to receive more traffic than the other in this context.