AWS Certified SysOps Administrator SOA-C01 – Question408

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

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:

Explanation: Auto Scaling keeps checking the health of the EC2 instances launched by it at regular intervals. If an instance is observed as unhealthy, Auto Scaling will automatically terminate the instance and launch a new healthy instance. Thus, it maintains the number of instances as per the Auto Scaling group configuration. Reference:
http://docs.aws.amazon.com/AutoScaling/latest/DeveloperGuide/AutoSc…