You set a CloudWatch alarm for high memory usage on an EC2 instance. The alarm triggers when usage exceeds 75%. What happens when memory usage reaches 80%?

medium📝 Predict Output Q4 of 15

AWS - CloudWatch

AThe alarm state remains OK and no action is taken

BThe alarm state changes to ALARM and notifications are sent

CThe EC2 instance automatically stops

DThe alarm deletes the EC2 instance

Step-by-Step Solution

Solution:

Step 1: Understand CloudWatch alarm behavior
When the metric exceeds the threshold, the alarm state changes to ALARM.
Step 2: Recognize alarm actions
Alarms can send notifications but do not automatically stop or delete instances.
Final Answer:
The alarm state changes to ALARM and notifications are sent -> Option B
Quick Check:
Alarm triggers = State ALARM + notify [OK]

Quick Trick: Alarms notify, they don't stop or delete resources automatically [OK]

Common Mistakes:

Assuming alarms stop instances automatically
Thinking alarms delete resources
Believing alarm state stays OK after threshold breach

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More AWS Quizzes

You set a CloudWatch alarm for high memory usage on an EC2 instance. The alarm triggers when usage exceeds 75%. What happens when memory usage reaches 80%?

Step 1: Understand CloudWatch alarm behavior

Step 2: Recognize alarm actions

Final Answer:

Quick Check:

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