If a CloudWatch alarm triggers when CPUUtilization exceeds 80%, what happens if the metric data points are [60, 70, 80, 90]?

medium📝 Predict Output Q5 of 15

AWS - CloudWatch

AAlarm triggers because some points exceed 80%

BAlarm does not trigger because average is below 80%

CAlarm triggers only if all points exceed 80%

DAlarm triggers only if the first point exceeds 80%

Step-by-Step Solution

Solution:

Step 1: Understand Alarm Condition
CloudWatch alarms evaluate an aggregated statistic (like Average) of the data points in the evaluation period against the threshold.
Step 2: Check Data Points
Average = (60 + 70 + 80 + 90) / 4 = 300 / 4 = 75 < 80%, so alarm does not trigger.
Final Answer:
Alarm does not trigger because average is below 80% -> Option B
Quick Check:
Average 75 < 80% [OK]

Quick Trick: Alarms trigger based on statistic (e.g., Average) breaching threshold [OK]

Common Mistakes:

MISTAKES

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