AWS Certified SysOps Administrator – Associate (legacy) — Question 475

What happens if the instance launched by Auto Scaling becomes unhealthy?

Answer options

• A. Auto Scaling will terminate the instance and launch a new healthy instance.
• B. Auto Scaling will terminate the instance but not launch a new instance.
• C. The instance cannot become unhealthy.
• D. Auto Scaling will notify the user and the user can update the instance.

Correct answer: A

Explanation

Amazon EC2 Auto Scaling automatically monitors the health of the instances in its group and maintains the desired capacity. If an instance is found to be unhealthy, Auto Scaling terminates it and immediately launches a new instance to replace it. The other options are incorrect because Auto Scaling is designed to automate self-healing without requiring manual user intervention or leaving the group under-provisioned.