Crucial Exams

AWS Certified CloudOps Engineer Associate SOA-C03 Practice Question

A company runs a multi-tenant application on three Auto Scaling groups behind an Application Load Balancer (ALB). The DNS name for the ALB is the primary record in a Route 53 failover policy that redirects traffic to a standby stack in another Region. The operations team must ensure that Route 53 fails over only when all three microservices in the primary Region are unavailable. Which approach provides the required behavior with the least operational overhead?

  • Create three HTTP health checks, one for each microservice's /status endpoint, and then create a calculated health check that is healthy when at least one child health check is healthy. Attach the calculated health check to the primary failover record.

  • Configure one HTTP health check that monitors the ALB DNS name and set the failure threshold to three consecutive failed checks.

  • Create three HTTP health checks, one for each microservice, and create a calculated health check that is healthy only when all child health checks are healthy. Associate the calculated check with the primary record.

  • Define a CloudWatch alarm that monitors the ALB's UnHealthyHostCount metric and link that alarm to a Route 53 metric-based health check attached to the primary record.

AWS Certified CloudOps Engineer Associate SOA-C03
Reliability and Business Continuity
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