DOP-C02 · Question #387
DOP-C02 Question #387: Real Exam Question with Answer & Explanation
The correct answer is A: Add the new ALB as an origin in the CloudFront distribution. Configure origin failover functionality.. The company requires disaster recovery (DR) in a separate AWS Region while keeping ongoing costs low. The Recovery Time Objective (RTO) and Recovery Point Objective (RPO) of under 30 minutes indicate a pilot-light strategy, where minimal resources are running in the DR Region but
Question
A company has a search application that has a web interface. The company uses Amazon CloudFront, Application Load Balancers (ALBs), and Amazon EC2 instances in an Auto Scaling group with a desired capacity of 3. The company uses prebaked AMIs. The application starts in 1 minute. The application queries an Amazon OpenSearch Service cluster. The application is deployed to multiple Availability Zones. Because of compliance requirements, the application needs to have a disaster recovery (DR) environment in a separate AWS Region. The company wants to minimize the ongoing cost of the DR environment and requires an RTO and an RPO of under 30 minutes. The company has created an ALB in the DR Region. Which solution will meet these requirements?
Options
- AAdd the new ALB as an origin in the CloudFront distribution. Configure origin failover functionality.
- BCreate a new CloudFront distribution in the DR Region and add the new ALB as an origin. Use
- CCreate a new CloudFront distribution in the DR Region and add the new ALB as an origin. Use
- DAdd the new ALB as an origin in the CloudFront distribution. Configure origin failover functionality.
Explanation
The company requires disaster recovery (DR) in a separate AWS Region while keeping ongoing costs low. The Recovery Time Objective (RTO) and Recovery Point Objective (RPO) of under 30 minutes indicate a pilot-light strategy, where minimal resources are running in the DR Region but can be scaled up quickly when needed. This solution meets the requirements by: 1. Using CloudFront origin failover to route traffic to the DR ALB if the primary Region becomes 2. Keeping the DR Auto Scaling group at a desired capacity of 0 to minimize costs, ensuring instances are launched only when failover occurs. 3. Copying the AMI to the DR Region so instances can be quickly launched when needed. 4. Setting up cross-cluster replication for OpenSearch Service to ensure the DR cluster is up-to- date with the latest data. 5. Minimizing costs by not maintaining full compute resources in the DR Region until failover is
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