AWS Certified Solutions Architect – Associate (SAA-C03) — Question 518

A company has an online gaming application that has TCP and UDP multiplayer gaming capabilities. The company uses Amazon Route 53 to point the application traffic to multiple Network Load Balancers (NLBs) in different AWS Regions. The company needs to improve application performance and decrease latency for the online game in preparation for user growth.

Which solution will meet these requirements?

Answer options

• A. Add an Amazon CloudFront distribution in front of the NLBs. Increase the Cache-Control max-age parameter.
• B. Replace the NLBs with Application Load Balancers (ALBs). Configure Route 53 to use latency-based routing.
• C. Add AWS Global Accelerator in front of the NLBs. Configure a Global Accelerator endpoint to use the correct listener ports.
• D. Add an Amazon API Gateway endpoint behind the NLBs. Enable API caching. Override method caching for the different stages.

Correct answer: C

Explanation

AWS Global Accelerator leverages the AWS global network to optimize routing and minimize latency for both TCP and UDP protocols, which is ideal for multiplayer gaming. Amazon CloudFront and Amazon API Gateway are optimized for HTTP/HTTPS and do not support UDP traffic, rendering Options A and D incorrect. Replacing NLBs with ALBs as suggested in Option B is also incorrect because ALBs do not support UDP protocols.