AWS Certified SysOps Administrator – Associate (legacy) — Question 193

Website users report that an application's pages are loading slowly at the beginning of the workday. The application runs on Amazon EC2 instances, and data is stored in an Amazon RDS database. The SysOps Administrator suspects the issue is related to high CPU usage on a component of this application.
How can the Administrator find out which component is causing the performance bottleneck?

Answer options

• A. Use AWS CloudTrail to review the resource usage history for each component.
• B. Use Amazon CloudWatch metrics to examine the resource usage of each component.
• C. Use Amazon Inspector to view the resource usage details for each component.
• D. Use Amazon CloudWatch Events to examine the high usage events for each component.

Correct answer: B

Explanation

The correct answer is B because Amazon CloudWatch metrics provide detailed insights into the resource usage of each component, allowing the Administrator to identify which one is experiencing high CPU usage. Option A is incorrect as AWS CloudTrail focuses on API call tracking rather than real-time resource metrics. Option C is not suitable because Amazon Inspector is primarily used for security assessments, not performance monitoring. Option D is also incorrect; while Amazon CloudWatch Events can alert on certain conditions, it does not provide the detailed resource utilization data needed to diagnose the issue.