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You want to monitor the average latency of your web application every 5 minutes using CloudWatch. Which combination of settings is best to achieve this?

hard📝 Best Practice Q15 of 15
AWS - CloudWatch
You want to monitor the average latency of your web application every 5 minutes using CloudWatch. Which combination of settings is best to achieve this?
ASet metric period to 60 seconds and statistic to Sum
BSet metric period to 300 seconds and statistic to Average
CSet metric period to 300 seconds and statistic to Maximum
DSet metric period to 60 seconds and statistic to Minimum
Step-by-Step Solution
Solution:
  1. Step 1: Understand metric period and statistic

    Period defines how often data is collected; statistic defines how data is summarized.
  2. Step 2: Match requirements to settings

    To monitor average latency every 5 minutes, use 300 seconds period and Average statistic.
  3. Final Answer:

    Set metric period to 300 seconds and statistic to Average -> Option B
  4. Quick Check:

    5 min period + Average = correct monitoring [OK]
Quick Trick: Use 300s period and Average for 5-minute average latency [OK]
Common Mistakes:
MISTAKES
  • Using Sum or Maximum instead of Average
  • Using 60s period for 5-minute average
  • Confusing Minimum with latency monitoring

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