You want to automatically increase the number of EC2 instances when CPU usage is high and send a notification to your team. Which combination of alarm actions should you configure?

hard📝 Application Q15 of 15

AWS - CloudWatch

AAdd only the Auto Scaling policy ARN to AlarmActions

BAdd only the SNS topic ARN to AlarmActions

CAdd both the Auto Scaling policy ARN and the SNS topic ARN to the alarm's AlarmActions

DCreate two separate alarms, one for scaling and one for notifications

Step-by-Step Solution

Solution:

Step 1: Understand alarm actions for scaling and notifications
To scale automatically, the alarm must trigger the Auto Scaling policy. To notify, it must trigger the SNS topic.
Step 2: Combine both actions in one alarm
Adding both ARNs in AlarmActions ensures the alarm triggers scaling and sends notifications simultaneously.
Final Answer:
Add both the Auto Scaling policy ARN and the SNS topic ARN to the alarm's AlarmActions -> Option C
Quick Check:
Multiple AlarmActions allow scaling + notifications [OK]

Quick Trick: Use both Auto Scaling and SNS ARNs in AlarmActions [OK]

Common Mistakes:

Thinking one ARN can do both scaling and notifications
Creating multiple alarms unnecessarily
Missing one of the required ARNs

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More AWS Quizzes

You want to automatically increase the number of EC2 instances when CPU usage is high and send a notification to your team. Which combination of alarm actions should you configure?

Step 1: Understand alarm actions for scaling and notifications

Step 2: Combine both actions in one alarm

Final Answer:

Quick Check:

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