Exam AWS Certified Solutions Architect - Professional SAP-C02 topic 1 question 333 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Professional SAP-C02

Question #: 333
Topic #: 1

[All AWS Certified Solutions Architect - Professional SAP-C02 Questions]

A company hosts a community forum site using an Application Load Balancer (ALB) and a Docker application hosted in an Amazon ECS cluster. The site data is stored in Amazon RDS for MySQL and the container image is stored in ECR. The company needs to provide their customers with a disaster recovery SLA with an RTO of no more than 24 hours and RPO of no more than 8 hours.

Which of the following solutions is the MOST cost-effective way to meet the requirements?

A. Use AWS CloudFormation to deploy identical ALB, EC2, ECS and RDS resources in two regions. Schedule RDS snapshots every 8 hours. Use RDS multi-region replication to update the secondary region's copy of the database. In the event of a failure, restore from the latest snapshot, and use an Amazon Route 53 DNS failover policy to automatically redirect customers to the ALB in the secondary region.
B. Store the Docker image in ECR in two regions. Schedule RDS snapshots every 8 hours with snapshots copied to the secondary region. In the event of a failure, use AWS CloudFormation to deploy the ALB, EC2, ECS and RDS resources in the secondary region, restore from the latest snapshot, and update the DNS record to point to the ALB in the secondary region.
C. Use AWS CloudFormation to deploy identical ALB, EC2, ECS, and RDS resources in a secondary region. Schedule hourly RDS MySQL backups to Amazon S3 and use cross-region replication to replicate data to a bucket in the secondary region. In the event of a failure, import the latest Docker image to Amazon ECR in the secondary region, deploy to the EC2 instance, restore the latest MySQL backup, and update the DNS record to point to the ALB in the secondary region.
D. Deploy a pilot light environment in a secondary region with an ALB and a minimal resource EC2 deployment for Docker in an AWS Auto Scaling group with a scaling policy to increase instance size and number of nodes. Create a cross-region read replica of the RDS data. In the event of a failure, promote the replica to primary, and update the DNS record to point to the ALB in the secondary region.

Show Suggested Answer

Suggested Answer: B 🗳️

by Totoroha at Nov. 22, 2023, 4:26 p.m.

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Comments

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enk

Highly Voted 1 year, 2 months ago

Selected Answer: B

With an RTO of 24 hours, using the 'Cold' DR solution option B is the cheapest. Option D is a partial on DR solution which I would think would be more expensive in the long run then the 2nd ECR container in another region.

upvoted 9 times

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shaaam80

Highly Voted 1 year, 2 months ago

Selected Answer: B

Since RTO is 24 hours, no need to have all resources provisioned already on site 2. Take RDS Snapshots every 8 hrs to satisfy RPO. Deploy the environment using CF incase of DR and restore RDS snapshots. Answer - B

upvoted 6 times

shaaam80

1 year, 2 months ago

Also update DNS records to point to DR region

upvoted 1 times

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Skillbuilder

Most Recent 6 months ago

If you're preparing for the AWS Certified Solutions Architect - Professional (SAP-C02) exam and looking for expert guidance, I highly recommend checking out the AWS Certified Solutions Architect – Associate training(https://www.netcomlearning.com/certifications/aws-certified-solutions-architect---associate) by NetCom Learning. This instructor-led training covers core AWS services, networking, security, cost optimization, and hands-on labs with real-world case studies—helping you build a strong foundation before tackling advanced certifications like SAP-C02. Understanding disaster recovery strategies like RTO (Recovery Time Objective) and RPO (Recovery Point Objective) is crucial for AWS architecture. This course will equip you with the skills needed to answer complex exam questions like this one!

upvoted 1 times

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career360guru

1 year, 1 month ago

Selected Answer: B

Option B is lowest cost.

upvoted 1 times

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ProMax

1 year, 2 months ago

Selected Answer: D

Answer is D

upvoted 3 times

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heatblur

1 year, 2 months ago

Selected Answer: B

B. ECR and RDS Snapshots in Two Regions: Storing Docker images in ECR in two regions and copying RDS snapshots to the secondary region is a good strategy. In case of failure, CloudFormation deploys necessary resources in the secondary region, and the DNS is updated. This option is more cost-effective than A, as it doesn't require maintaining a full duplicate environment or multi-region replication constantly.

upvoted 4 times

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