DVA-C02 · Question #783
DVA-C02 Question #783: Real Exam Question with Answer & Explanation
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Question
A company has a two-tier application that runs on Amazon EC2 instances behind an Application Load Balancer (ALB). The EC2 instances are in an Auto Scaling group. The Auto Scaling group is configured with a lifecycle hook that uses the default health checks for the EC2 instances. During a recent change deployment, the ALB reported HTTP 502 errors. When a developer checked the target group, some of the EC2 instances were marked as unhealthy. However, the Auto Scaling group was not replacing the unhealthy EC2 instances. Which configuration change should the developer make to replace the unhealthy EC2 instances?
Options
- AIncrease the cooldown period of the Auto Scaling group from its default value.
- BUpdate the lifecycle hook to wait for the application to install.
- CUpdate the Auto Scaling group's health check from Amazon EC2 to Elastic Load Balancing (ELB).
- DSet the health check grace period for the Auto Scaling group.
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