AWS Certified SysOps Administrator – Associate (legacy) — Question 33

A company is deploying a legacy web application on Amazon EC2 instances behind an ELB Application Load Balancer. The application worked well in the test environment. However, in production, users report that they are prompted to log in to the system several times an hour.
Which troubleshooting step should be taken to help resolve the problem reported by users?

Answer options

• A. Confirm that the Application Load Balancer is in a multi-AZ configuration.
• B. Enable health checks on the Application Load Balancer.
• C. Ensure that port 80 is configured on the security group.
• D. Enable sticky sessions on the Application Load Balancer.

Correct answer: D

Explanation

Enabling sticky sessions on the Application Load Balancer is the correct answer because it allows user sessions to be consistently routed to the same EC2 instance, preventing repeated login prompts. The other options do not address the session management issue that is causing users to log in multiple times.