AWS Certified SysOps Administrator – Associate (legacy) — Question 199

An Auto Scaling group scales up and down based on Average CPU Utilization. The alarm is set to trigger a scaling event when the Average CPU Utilization exceeds 80% for 5 minutes. Currently, the Average CPU has been 95% for over two hours and new instances are not being added.
What could be the issue?

Answer options

• A. A scheduled scaling action has not been defined.
• B. In the field Suspend Process, ג€ReplacesUnhealthyג€ has been selected.
• C. The maximum size of the Auto Scaling group is below or at the current group size.
• D. The Health Check Grace Period is set to less than 300 seconds.

Correct answer: C

Explanation

The correct answer is C because if the maximum size of the Auto Scaling group is at or below the current number of instances, new instances cannot be added despite high CPU utilization. Options A and B do not directly relate to the inability to scale with high CPU usage, while D pertains to health checks and does not affect the scaling action based on CPU utilization.