An Auto Scaling group is running at the desired capacity of 5 instances and receives a trigger from the Cloudwatch Alarm to increase the capacity by 1. The cool down period is 5 minutes. Cloudwatch sends another trigger after 2 minutes to decrease the desired capacity by 1.
What will be the count of instances at the end of 4 minutes? A. 7 B. 6 C. 4 D. 5
Correct Answer: B
Explanation:
Explanation: The cool down period is the time difference between the end of one scaling activity (can be start or terminate) and the start of another one (can be start or terminate). During the cool down period, Au-to Scaling does not allow the desired capacity of the Auto Scaling group to be changed by any other CloudWatch alarm. Thus, in this case the trigger from the second alarm will have no effect. Reference: http://docs.aws.amazon.com/AutoScaling/latest/DeveloperGuide/AS_Con…
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