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DOP-C02 · Question #134

DOP-C02 Question #134: Real Exam Question with Answer & Explanation

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Submitted by kevin_r· Mar 6, 2026Reliability & Resilience

Question

A company is testing a web application that runs on Amazon EC2 instances behind an Application Load Balancer. The instances run in an Auto Scaling group across multiple Availability Zones. The company uses a blue/green deployment process with immutable instances when deploying new software. During testing, users are being automatically logged out of the application at random times. Testers also report that, when a new version of the application is deployed, all users are logged out. The development team needs a solution to ensure users remain logged in across scaling events and application deployments. What is the MOST operationally efficient way to ensure users remain logged in?

Options

  • AEnable smart sessions on the load balancer and modify the application to check for an existing
  • BEnable session sharing on the load balancer and modify the application to read from the session store.
  • CStore user session information in an Amazon S3 bucket and modify the application to read session
  • DModify the application to store user session information in an Amazon ElastiCache cluster.

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Topics

#Session Management#ElastiCache#Blue/Green Deployment#Distributed Systems
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