An enterprise operates a payment processing application in the us-east-1 Region. The application runs on Amazon ECS tasks (AWS Fargate) behind an Application Load Balancer (ALB). The database tier consists of an Amazon Aurora PostgreSQL cluster. Outbound transactions to external payment gateways are routed through a single NAT Gateway in us-east-1. The company needs to design a disaster recovery (DR) solution in the us-west-2 Region. The solution must achieve a Recovery Time Objective (RTO) of less than 15 minutes and a Recovery Point Objective (RPO) of less than 1 minute, while also eliminating single points of failure for outbound external traffic. Which combination of actions should the Solutions Architect take to enhance reliability and meet the disaster recovery objectives? (Select TWO.)
- Configure Amazon Aurora Global Database with the primary cluster in us-east-1 and a secondary cluster in us-west-2. Use AWS Route 53 Application Recovery Controller (ARC) routing controls to manage the failover of the database and application traffic.Cevap
- BConfigure AWS Backup to take hourly cross-region snapshots of the Aurora PostgreSQL database to us-west-2, and use AWS CloudFormation to provision the ECS resources in the secondary region during a failover event.
- Deploy NAT Gateways in all occupied Availability Zones within both the us-east-1 and us-west-2 VPCs, and update private subnet route tables to use the zone-specific NAT Gateway for outbound traffic.Cevap
- DCreate a Route 53 Private Hosted Zone (PHZ) in the primary account for internal microservice DNS resolution, and rely on cross-region VPC peering to automatically resolve these private domains from the secondary region without associating the PHZ with the us-west-2 VPC.
- EDeploy a duplicate application stack in us-west-2 and configure Route 53 active-passive failover routing records pointing directly to the ALBs without associating health checks, relying on manual DNS record modifications during an outage.