AWS SAP-C02 · Question 03 · Domain 1.3: Reliable Architectures
A financial institution requires a disaster recovery strategy for its critical trading application. The application uses Amazon Aurora PostgreSQL and EC2 instances in an Auto Scaling group. The business requires an RPO of 1 second and an RTO of less than 1 minute. The solution must be highly available across two AWS Regions. Which architecture meets these requirements?
Answer options:
Use Aurora Global Database. Deploy EC2 instances in an Auto Scaling group in the secondary region with capacity set to 0. Use Amazon Route 53 with a failover routing policy.
Use Aurora cross-region read replicas. Deploy a warm standby of EC2 instances in the secondary region. Use AWS Global Accelerator for routing.
Use Amazon RDS for PostgreSQL with Multi-AZ across two regions. Use Route 53 latency-based routing.
Take continuous AWS Backup snapshots of the Aurora cluster and copy them to the secondary region. Use CloudFormation to deploy compute resources during a disaster.
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