Crucial Exams

Microsoft DevOps Engineer Expert AZ-400 Practice Question

You are troubleshooting a production Azure App Service that is instrumented with the Application Insights SDK. Telemetry from the app is stored in a Log Analytics workspace. You suspect that high values of the 'Process \ Private Bytes' performance counter correlate with increases in request latency. Create a single Kusto Query Language (KQL) statement that, for the last two hours, returns one row per 5-minute window containing the average request duration in milliseconds and the maximum value of the 'Process \ Private Bytes' counter. Which KQL statement should you run so you can plot both metrics on the same time-series chart?

  • requests | where timestamp > ago(2h) | summarize avgDurationMs = avg(duration/1ms) by bin(timestamp, 5m) | join kind = inner ( performanceCounters | where timestamp > ago(2h) and name == "Private Bytes" | summarize maxPrivateBytes = max(value) by bin(timestamp, 5m) ) on timestamp | project timestamp, avgDurationMs, maxPrivateBytes

  • performanceCounters | where name == "Private Bytes" and timestamp > ago(2h) | summarize maxPrivateBytes = max(value) by bin(timestamp, 5m) | project timestamp, maxPrivateBytes

  • requests | where timestamp > ago(2h) | join kind = inner performanceCounters on timestamp | where name == "Private Bytes" | summarize avgDurationMs = avg(duration/1ms), maxPrivateBytes = max(value) by bin(timestamp, 5m)

  • make-series avgDurationMs = avg(duration/1ms), maxPrivateBytes = maxif(value, name == "Private Bytes") on timestamp from ago(2h) to now() step 5m in (requests, performanceCounters)

Microsoft DevOps Engineer Expert AZ-400
Implement an instrumentation strategy
Your Score:
Settings & Objectives
Random Mixed
Questions are selected randomly from all chosen topics, with a preference for those you haven’t seen before. You may see several questions from the same objective or domain in a row.
Rotate by Objective
Questions cycle through each objective or domain in turn, helping you avoid long streaks of questions from the same area. You may see some repeat questions, but the distribution will be more balanced across topics.

Check or uncheck an objective to set which questions you will receive.

Wipe Score
Bash, the Crucial Exams Chat Bot
AI Bot