- A
Configure Azure Storage account diagnostics
Why wrong: For storage, not App Service.
- B
Set up Azure DNS logging
Why wrong: DNS logging doesn't capture app errors.
- C
Enable Application Insights for the web app
Captures exceptions and traces.
- D
Enable Azure Front Door logging
Why wrong: Front Door logs HTTP requests, not app errors.
Question 561 of 997
Enable Detailed Error Logging for Azure App Service
This AZ-204 practice question tests your understanding of monitor, troubleshoot, and optimize azure solutions. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
You deploy a web app to Azure App Service. Users report intermittent 500 errors. How should you enable detailed error logging?
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
✓
Enable Application Insights for the web app
Application Insights provides built-in server-side telemetry for Azure App Service, including detailed error tracking, stack traces, and request logs. Enabling it captures the full exception details for intermittent 500 errors, which are typically unhandled exceptions or crashes in the application code. This is the most direct and integrated way to get detailed error logs without additional infrastructure.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Configure Azure Storage account diagnostics
Why it's wrong here
For storage, not App Service.
- ✗
Set up Azure DNS logging
Why it's wrong here
DNS logging doesn't capture app errors.
- ✓
Enable Application Insights for the web app
Why this is correct
Captures exceptions and traces.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable Azure Front Door logging
Why it's wrong here
Front Door logs HTTP requests, not app errors.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse platform-level diagnostics (like storage or Front Door logs) with application-level telemetry, assuming any logging option will capture detailed error details, but only Application Insights provides the deep exception context needed for intermittent 500 errors.
Detailed technical explanation
How to think about this question
When Application Insights is enabled for an App Service, the Application Insights SDK or the auto-instrumentation agent attaches to the application process and collects exception telemetry via the .NET or Java diagnostic listeners. For intermittent errors, the sampling feature in Application Insights ensures that even rare exceptions are captured by default (adaptive sampling), while the 'Live Metrics' stream can show real-time failures. A common subtlety is that if the 500 error occurs before the application code runs (e.g., in the App Service runtime itself), you may need to enable 'Failed Request Tracing' in the App Service diagnostics logs as a complementary measure.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
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Monitor, troubleshoot, and optimize Azure solutions — study guide chapter
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FAQ
Questions learners often ask
What does this AZ-204 question test?
Monitor, troubleshoot, and optimize Azure solutions — This question tests Monitor, troubleshoot, and optimize Azure solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable Application Insights for the web app — Application Insights provides built-in server-side telemetry for Azure App Service, including detailed error tracking, stack traces, and request logs. Enabling it captures the full exception details for intermittent 500 errors, which are typically unhandled exceptions or crashes in the application code. This is the most direct and integrated way to get detailed error logs without additional infrastructure.
What should I do if I get this AZ-204 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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