ANS-C01 Question 29
Single answerA company has deployed an application across multiple AWS Regions to ensure high availability and disaster recovery. The application requires users to connect via a single DNS name and must automatically route traffic to the Region closest to the user with low latency. Which AWS service and routing policy combination should the company use to meet these requirements?
- A
Amazon Route 53 with Geolocation Routing Policy
- B
Amazon Route 53 with Latency Routing Policy
- C
AWS Global Accelerator with Endpoint Groups
- D
Amazon CloudFront with Origin Failover
Show answer and explanation
Correct answer: B
Explanation
The Latency Routing Policy in Amazon Route 53 is specifically designed to route traffic to the AWS Region that provides the lowest latency to the user. This ensures both proximity-based routing and low latency, meeting the requirements of the scenario. Other options either lack latency-based routing or do not use DNS as specified.
- A. Incorrect.
Geolocation Routing Policy allows you to route traffic based on the geographic location of the user, but it does not assess latency between the user and the AWS Regions. This does not meet the low latency requirement.
- B. Correct.
Latency Routing Policy in Amazon Route 53 directs traffic to the Region that provides the lowest latency to the user, meeting both the requirement of routing based on proximity and ensuring low latency.
- C. Incorrect.
AWS Global Accelerator improves application performance by directing traffic to optimal endpoints via the AWS global network, but it does not work with DNS names as specified in the question. Instead, it uses static IP addresses.
- D. Incorrect.
Amazon CloudFront with Origin Failover is designed for content delivery and failover between origins, but it does not route traffic based on latency or proximity to users.