AZ-204 Practice Question: Monitor, troubleshoot, and optimize Azure solutions
Your application running on Azure App Service is experiencing intermittent timeouts. You have configured Application Insights to collect telemetry. Which metric should you analyze in the Azure portal to identify the slowest dependencies?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Dependency Duration
The 'Dependency Duration' metric in Application Insights shows the duration of calls to external dependencies. Option A is wrong because 'Request Duration' only measures the total time for requests, not specific dependencies. Option B is wrong because 'Failed Requests' tracks errors, not duration. Option D is wrong because 'Availability' measures uptime, not performance.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Request Duration
Why it's wrong here
Request Duration measures total request time, not individual dependency durations.
- ✗
Failed Requests
Why it's wrong here
Failed Requests counts errors, not durations.
- ✓
Dependency Duration
Why this is correct
Dependency Duration shows the time spent on external service calls.
- ✗
Availability
Why it's wrong here
Availability tracks uptime, not dependency performance.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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