[Solved] Why might a CloudWatch alarm enter the INSUFFICIENT_DATA state? — Ans: Because there is not enough recent metric data to evaluate the alarm | AWS

AWS - CloudWatch

Why might a CloudWatch alarm enter the INSUFFICIENT_DATA state?

ABecause the SNS topic is not configured

BBecause the alarm threshold is set too high

CBecause the alarm is disabled manually

DBecause there is not enough recent metric data to evaluate the alarm

Step-by-Step Solution

Solution:

Step 1: Understand INSUFFICIENT_DATA meaning
This state means CloudWatch lacks enough recent metric data to decide alarm state.
Step 2: Rule out other options
Threshold, manual disable, or SNS topic do not cause INSUFFICIENT_DATA state.
Final Answer:
INSUFFICIENT_DATA occurs when recent metric data is missing -> Option D
Quick Check:
INSUFFICIENT_DATA = not enough metric data [OK]

Quick Trick: INSUFFICIENT_DATA means missing recent metric data [OK]

Common Mistakes:

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Why might a CloudWatch alarm enter the INSUFFICIENT_DATA state?