AWS Certified SysOps Administrator – Associate — Question 437

A company hosts a web application on Amazon EC2 instances behind an Application Load Balancer (ALB). The company uses Amazon Route 53 to route traffic.
The company also has a static website that is configured in an Amazon S3 bucket.
A SysOps administrator must use the static website as a backup to the web application. The failover to the static website must be fully automated.
Which combination of actions will meet these requirements? (Choose two.)

Answer options

• A. Create a primary failover routing policy record. Configure the value to be the ALB.
• B. Create an AWS Lambda function to switch from the primary website to the secondary website when the health check fails.
• C. Create a primary failover routing policy record. Configure the value to be the ALB. Associate the record with a Route 53 health check.
• D. Create a secondary failover routing policy record. Configure the value to be the static website. Associate the record with a Route 53 health check.
• E. Create a secondary failover routing policy record. Configure the value to be the static website.

Correct answer: C, E

Explanation

To establish an automated active-passive failover configuration in Route 53, the primary record (the ALB) must be associated with a Route 53 health check so that Route 53 knows when to trigger a failover. The secondary record (the S3 static website) does not require its own health check because Route 53 will automatically route traffic to it once the primary health check fails. Using a Lambda function is unnecessary because Route 53 natively supports automated failover routing.