Exam AWS Certified DevOps Engineer - Professional DOP-C02 topic 1 question 362 discussion

Exam question from Amazon's AWS Certified DevOps Engineer - Professional DOP-C02

Question #: 362
Topic #: 1

[All AWS Certified DevOps Engineer - Professional DOP-C02 Questions]

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?

A. Add the new ALB as an origin in the CloudFront distribution. Configure origin failover functionality. Copy the AMI to the DR Region. Create a launch template and an Auto Scaling group with a desired capacity of 0 in the DR Region. Create a new OpenSearch Service cluster in the DR Region. Set up cross-cluster replication for the cluster.
B. Create a new CloudFront distribution in the DR Region and add the new ALB as an origin. Use Amazon Route 53 DNS for Regional failover. Copy the AMI to the DR Region. Create a launch template and an Auto Scaling group with a desired capacity of 0 in the DR Region. Reconfigure the OpenSearch Service cluster as a Multi-AZ with Standby deployment. Ensure that the standby nodes are in the DR Region.
C. Create a new CloudFront distribution in the DR Region and add the new ALB as an origin. Use Amazon Route 53 DNS for Regional failover. Copy the AMI to the DR Region. Create a launch template and an Auto Scaling group with a desired capacity of 3 in the DR Region. Reconfigure the OpenSearch Service cluster as a Multi-AZ with Standby deployment. Ensure that the standby nodes are in the DR Region.
D. Add the new ALB as an origin in the CloudFront distribution. Configure origin failover functionality. Copy the AMI to the DR Region. Create a launch template and an Auto Scaling group with a desired capacity of 3 in the DR Region. Create a new OpenSearch Service cluster in the DR Region. Set up cross-cluster replication for the cluster.

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Suggested Answer: A 🗳️

by GripZA at April 23, 2025, 7:18 a.m.

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GripZA

2 days, 16 hours ago

Selected Answer: A

active-passive strategy with desired capacity of 0. 1min application start time gives enough time to increase desired count when you failover to DR region. OpenSearch supports cross-cluster replication for DR scenarios. "With cross-cluster replication in Amazon OpenSearch Service, you can replicate user indexes, mappings, and metadata from one OpenSearch Service domain to another. Using cross-cluster replication helps to ensure disaster recovery if there is an outage, and allows you to replicate data across geographically distant data centers to reduce latency." https://docs.aws.amazon.com/opensearch-service/latest/developerguide/replication.html not B or C since DR env is in a separate region. OpenSearch multi-AZ won't help. not D since it will have running 3 instances with associated runtime costs.

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Exam AWS Certified DevOps Engineer - Professional DOP-C02 topic 1 question 362 discussion

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GripZA

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