AWS Certified Solutions Architect – Associate (SAA-C03) — Question 917

A company is implementing a new application on AWS. The company will run the application on multiple Amazon EC2 instances across multiple Availability Zones within multiple AWS Regions. The application will be available through the internet. Users will access the application from around the world.

The company wants to ensure that each user who accesses the application is sent to the EC2 instances that are closest to the user’s location.

Which solution will meet these requirements?

Answer options

• A. Implement an Amazon Route 53 geolocation routing policy. Use an internet-facing Application Load Balancer to distribute the traffic across all Availability Zones within the same Region.
• B. Implement an Amazon Route 53 geoproximity routing policy. Use an internet-facing Network Load Balancer to distribute the traffic across all Availability Zones within the same Region.
• C. Implement an Amazon Route 53 multivalue answer routing policy. Use an internet-facing Application Load Balancer to distribute the traffic across all Availability Zones within the same Region.
• D. Implement an Amazon Route 53 weighted routing policy. Use an internet-facing Network Load Balancer to distribute the traffic across all Availability Zones within the same Region.

Correct answer: B

Explanation

Amazon Route 53 geoproximity routing allows you to route traffic to resources based on the geographic location of both your users and your resources. Using this routing policy alongside an internet-facing Network Load Balancer to distribute incoming traffic across the Availability Zones in the destination Region satisfies the requirements. Other options like geolocation, multivalue, or weighted routing do not route traffic based on the physical distance/proximity between the user and the resources.