A financial institution is building a highly resilient payment processing system. The system uses Amazon API Gateway, AWS Lambda, and Amazon DynamoDB. The architecture must survive a complete AWS Region failure with zero data loss (RPO = 0) and an RTO of less than 1 minute. Which combination of configurations will meet these requirements? (Select THREE)

Answer options:

Use Amazon DynamoDB Global Tables to replicate data across two regions.

Configure Amazon Route 53 with a latency-based routing policy and health checks pointing to API Gateway in both regions.

Implement strong consistency for DynamoDB reads and use DynamoDB Transactions for writes.

Implement client-side retries with exponential backoff in the application.

Use AWS Backup to take continuous backups of DynamoDB and restore in the second region.

Deploy a Network Load Balancer in front of API Gateway for faster failover.

How to approach this question

Identify active-active components: Global Tables, Route 53 routing, and client resilience.

Full Answer

Use DynamoDB Global Tables. Configure Route 53 with active-active routing. Implement client-side retries with exponential backoff.

DynamoDB Global Tables provide multi-region replication. Route 53 latency routing with health checks enables active-active traffic distribution. Client-side retries handle transient failures during the brief failover window.

Common mistakes

Relying on AWS Backup for strict RTO requirements.

Question 18 All questions Question 20

Practice the full AWS Solutions Architect Professional SAP-C02 Practice Exam 4

75 questions · hints · full answers · grading

More questions from this exam

Q01A global enterprise is redesigning its network architecture across 50 AWS accounts. They require ...Hard Q02A financial services company uses AWS Organizations to manage 100+ accounts. The security team ma...Medium Q03An e-commerce company requires a multi-region active-active architecture for its critical order p...Medium Q04A company is setting up a new AWS environment using AWS Control Tower. They need to ensure that a...Hard Q05An enterprise has 50 AWS accounts under AWS Organizations. They want to implement a chargeback mo...Medium

View all 75 questions →