AWS Certified SysOps Administrator – Associate — Question 194

A SysOps administrator needs to design a disaster recovery (DR) plan for an application on AWS. The application runs on Amazon EC2 instances behind an Application Load Balancer (ALB). The instances are in an Auto Scaling group. The application uses an Amazon Aurora PostgreSQL database. The recovery time objective (RTO) and recovery point objective (RPO) are 15 minutes each.

Which combination of steps should the SysOps administrator take to meet these requirements MOST cost-effectively? (Choose two.)

Answer options

• A. Configure Aurora backups to be exported to the DR Region.
• B. Configure the Aurora cluster to replicate data to the DR Region by using the Aurora global database option.
• C. Configure the DR Region with an ALB and an Auto Scaling group. Use the same configuration as in the primary Region.
• D. Configure the DR Region with an ALB and an Auto Scaling group. Set the Auto Scaling group's minimum capacity, maximum capacity, and desired capacity to 1.
• E. Manually launch a new ALB and a new Auto Scaling group by using AWS CloudFormation during a failover activity.

Correct answer: B, D

Explanation

Option B is correct because using the Aurora global database allows for low-latency replication to the DR Region, meeting the RTO and RPO requirements. Option D is also correct as setting the Auto Scaling group's capacities to 1 minimizes costs while ensuring that the application can scale in the DR Region. The other options either incur unnecessary costs or do not adequately meet the RTO and RPO objectives.