SAP-C02 Question 81
Select 3A financial services company runs a critical payment processing application on AWS. The company has a strict recovery time objective (RTO) of 15 minutes and a recovery point objective (RPO) of 1 minute. The application is currently hosted in a single AWS Region using an Auto Scaling group and an Amazon RDS database. To meet the RTO and RPO requirements, which of the following strategies should the company implement?
- A
Set up a cross-Region read replica for the RDS database and promote it to the primary database during a failover.
- B
Use Amazon S3 cross-Region replication to replicate application logs and database backups to a secondary Region.
- C
Implement an active-active multi-Region architecture using Amazon Route 53 latency-based routing and asynchronous database replication.
- D
Deploy the application and database in a second Region with warm standby, enabling fast failover.
- E
Configure AWS Backup to create nightly RDS snapshots and store them in multiple Regions.
Show answer and explanation
Correct answers: A, C, D
Explanation
To meet the strict RTO of 15 minutes and RPO of 1 minute, the company must implement strategies that provide rapid failover and minimize data loss. Cross-Region read replicas, active-active multi-Region architectures, and warm standby deployments meet these requirements. Solutions like S3 replication or nightly snapshots are not adequate for such critical requirements due to their slower recovery and potential for higher data loss.
- A. Correct.
Correct: A cross-Region read replica can be promoted to a primary database during failover, allowing for a quick recovery of the database within the RTO and RPO requirements.
- B. Incorrect.
Incorrect: S3 cross-Region replication is not sufficient to meet a 15-minute RTO or a 1-minute RPO, as it is not designed for real-time database failover or application recovery.
- C. Correct.
Correct: An active-active multi-Region architecture with asynchronous database replication can meet the strict RTO and RPO requirements by ensuring minimal downtime and data loss.
- D. Correct.
Correct: A warm standby setup in a secondary Region allows the application and database to be quickly brought online, meeting the RTO and RPO requirements.
- E. Incorrect.
Incorrect: Nightly snapshots may result in significant data loss and are insufficient to meet an RPO of 1 minute.