AWS Certified SysOps Administrator – Associate (legacy) — Question 38

A SysOps Administrator is responsible for managing a set of 12.micro Amazon EC2 instances. The Administrator wants to automatically reboot any instance that exceeds 80% CPU utilization.
Which of these solutions would meet the requirements?

Answer options

• A. Create an Amazon CloudWatch alarm on the CPUCreditBalance metric and specify a terminate alarm action.
• B. Create an Amazon CloudWatch alarm on the CPUUtilization metric and specify a reboot alarm action.
• C. Create an Amazon CloudWatch alarm on the CPUCreditBalance metric and specify a reboot alarm action.
• D. Create an Amazon CloudWatch alarm on the CPUUtilization metric and specify a terminate alarm action.

Correct answer: B

Explanation

Option B is correct because it directly monitors the CPUUtilization metric and triggers a reboot action when usage exceeds 80%, which meets the requirements. Options A and D are incorrect as they involve terminate actions instead of rebooting the instances. Option C incorrectly uses the CPUCreditBalance metric, which does not relate to CPU utilization directly.