ANS-C01 Question 359
Select 3Your organization has deployed an application in multiple AWS Regions to serve a global user base. The application in each Region uses Amazon S3 for storing data and Amazon DynamoDB for application state management. You are tasked with ensuring low-latency inter-Regional communication while maintaining fault tolerance and high availability. Which of the following AWS services or configurations would be most appropriate to achieve this?
- A
Enable VPC peering between the VPCs in different Regions.
- B
Use AWS Global Accelerator to route user requests to the nearest Region.
- C
Leverage Amazon S3 Cross-Region Replication to synchronize objects between Regions.
- D
Use AWS Transit Gateway with inter-Region peering to connect VPCs across Regions.
- E
Enable Amazon DynamoDB Global Tables to replicate data across Regions.
Show answer and explanation
Correct answers: C, D, E
Explanation
To ensure low-latency inter-Regional communication while maintaining fault tolerance, Amazon S3 Cross-Region Replication ensures synchronization of object storage across Regions, AWS Transit Gateway provides efficient communication between VPCs in different Regions, and Amazon DynamoDB Global Tables replicate application state data across Regions for low-latency access. VPC peering and AWS Global Accelerator, while useful in certain scenarios, do not fully address the requirements of this scenario.
- A. Incorrect.
VPC peering is a valid option for inter-Regional communication, but it does not scale well for complex multi-Region architectures. There are better alternatives like Transit Gateway for this scenario.
- B. Incorrect.
AWS Global Accelerator improves global application performance by routing user traffic to the nearest healthy endpoint, but it does not address inter-Regional communication or data replication.
- C. Correct.
Amazon S3 Cross-Region Replication is a suitable choice for keeping S3 data synchronized between Regions to support low-latency reads and disaster recovery.
- D. Correct.
AWS Transit Gateway with inter-Region peering is an efficient solution for connecting VPCs across Regions, providing a scalable and fault-tolerant communication pattern.
- E. Correct.
Amazon DynamoDB Global Tables allow you to replicate application state data across Regions, enabling low-latency reads and high availability for distributed applications.