Crucial Exams

Microsoft DevOps Engineer Expert AZ-400 Practice Question

You instrument an ASP.NET Core web app with Application Insights. You must discover which API operations are responsible for the worst client-perceived latency over the last 24 hours by calculating the 95th-percentile request duration and listing only the five slowest operations whose 95th percentile is greater than 3 000 ms. Which Kusto Query Language (KQL) statement should you run in Log Analytics to meet the requirement?

  • requests | where timestamp > ago(1d) | summarize avgduration = avg(duration) by operationName | where avgduration > 3000 | top 5 by avgduration desc

  • requests | where timestamp > ago(1d) | summarize percentile(duration, 95) by operationName | where duration > 3000 | top 5 by duration desc

  • requests | where timestamp > ago(1d) | summarize percent_duration = percentile(duration, 95) by operationName | where percent_duration < 3000 | top 5 by percent_duration asc

  • requests | where timestamp > ago(1d) | summarize P95 = percentile(duration, 95) by operationName | where P95 > 3000 | top 5 by P95 desc

Microsoft DevOps Engineer Expert AZ-400
Implement an instrumentation strategy
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