Answer-first summary for fast verification
Answer: Amazon EC2 Auto Scaling adds only 1 instance to the group
A scaling policy instructs Amazon EC2 Auto Scaling to track a specific CloudWatch metric, and it defines what action to take when the associated CloudWatch alarm is in ALARM. When a scaling policy is executed, if the capacity calculation produces a number outside of the minimum and maximum size range of the group, Amazon EC2 Auto Scaling ensures that the new capacity never goes outside of the minimum and maximum size limits.
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You are managing an Auto Scaling group in an AWS environment that is configured to dynamically adjust the number of EC2 instances to meet load demands. The Auto Scaling group currently has a maximum capacity of 3 instances and a present capacity of 2 instances. There is a scaling policy in place that specifies the addition of 3 instances when triggered.
Given these configurations, if this scaling policy is executed, what would be the resulting state of the Auto Scaling group?
A
Amazon EC2 Auto Scaling adds only 1 instance to the group
B
Amazon EC2 Auto Scaling adds 3 instances to the group
C
Amazon EC2 Auto Scaling adds 3 instances to the group and scales down 2 of those instances eventually
D
Amazon EC2 Auto Scaling does not add any instances to the group, but suggests changing the scaling policy to add one instance
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