AWS Certified SysOps Administrator – Associate (legacy) — Question 134

A user has enabled detailed CloudWatch metric monitoring on an Auto Scaling group. Which of the below mentioned metrics will help the user identify the total number of instances in an Auto Scaling group including pending, terminating and running instances?

Answer options

• A. GroupTotalInstances
• B. GroupSumInstances
• C. It is not possible to get a count of all the three metrics together. The user has to find the individual number of running, terminating and pending instances and sum it
• D. GroupInstancesCount

Correct answer: A

Explanation

The correct answer is A, GroupTotalInstances, as it provides the total count of instances in various states within the Auto Scaling group. Option B, GroupSumInstances, is not a valid metric for this purpose, and option C incorrectly states that it isn't possible to obtain a total count, while option D does not accurately represent the total as it is not the correct metric for this scenario.