AWS Certified SysOps Administrator – Associate (legacy) — Question 115

A SysOps Administrator is responsible for a legacy, CPU-heavy application. The application can only be scaled vertically. Currently, the application is deployed on a single t2.large Amazon EC2 instance. The system is showing 90% CPU usage and significant performance latency after a few minutes.
What change should be made to alleviate the performance problem?

Answer options

• A. Change the Amazon EBS volume to Provisioned IOPs.
• B. Upgrade to a compute-optimized instance.
• C. Add additional t2.large instances to the application.
• D. Purchase Reserved Instances.

Correct answer: C

Explanation

The correct answer is C, as adding more t2.large instances allows for horizontal scaling, which can help distribute the load and reduce CPU usage. Option A does not address the CPU issue directly, B would require changing the instance type, which is not allowed for vertical scaling, and D does not solve the performance issue but rather changes the billing model.