ANS-C01 Question 362
Single answerA company has deployed a multi-region application using Amazon EC2 instances in two AWS Regions: us-east-1 and eu-west-1. The application requires low-latency, high-bandwidth communication between the resources in the two Regions for data replication. Which AWS service or feature should the company use to meet these requirements?
- A
AWS Direct Connect with a private virtual interface
- B
AWS Transit Gateway with inter-Region peering
- C
Amazon VPC peering between the two Regions
- D
AWS Global Accelerator
Show answer and explanation
Correct answer: B
Explanation
AWS Transit Gateway with inter-Region peering is the best solution for low-latency, high-bandwidth communication between VPCs across Regions. It simplifies network architecture by enabling centralized management, supports inter-Region peering, and provides high availability. Other options like Direct Connect or VPC peering have limitations in scalability or applicability to the given scenario.
- A. Incorrect.
AWS Direct Connect with a private virtual interface provides a dedicated, low-latency connection to an AWS Region, but it does not natively enable inter-Region communication between VPCs. Additional configuration would be required.
- B. Correct.
AWS Transit Gateway with inter-Region peering offers a scalable, low-latency, and highly available solution for connecting VPCs across multiple Regions. It is specifically designed for the scenario described.
- C. Incorrect.
Amazon VPC peering enables communication between VPCs but is limited in scalability and management complexity increases when dealing with multiple Regions or many VPCs. It is not the most efficient option for this use case.
- D. Incorrect.
AWS Global Accelerator is designed for improving performance for internet-facing applications by routing traffic to the optimal endpoint. It does not address inter-Region VPC communication.