Question 606 of 997

How to Capture a Memory Dump for a 500 Error in Azure App Service

This AZ-204 practice question tests your understanding of monitor, troubleshoot, and optimize azure solutions. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.

Your team uses Azure DevOps to deploy a web app to Azure App Service. The deployment fails intermittently with a '500 Internal Server Error' after successful code upload. You want to capture a memory dump of the process when the error occurs. What should you configure?

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

Use App Service Diagnostics to collect a memory dump

Option B is correct because App Service Diagnostics provides a built-in 'Collect Memory Dump' tool that can be triggered on specific HTTP error codes, such as 500 Internal Server Error. This allows you to capture a full process dump of the web app when the error occurs, enabling offline analysis of the failure without modifying application code.

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 an autoscale rule in Azure Monitor

    Why it's wrong here

    Autoscale scales out instances, not capture dumps.

  • Use App Service Diagnostics to collect a memory dump

    Why this is correct

    App Service Diagnostics can capture memory dumps on demand.

    Related concept

    Read the scenario before looking for a memorised answer.

  • Set up Azure API Management policies

    Why it's wrong here

    API Management handles API requests, not App Service debugging.

  • Enable Application Insights Snapshot Debugger

    Why it's wrong here

    Snapshot Debugger captures exceptions, not memory dumps.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates confuse Application Insights Snapshot Debugger (which captures lightweight exception snapshots) with a full memory dump, leading them to choose option D, even though Snapshot Debugger does not provide the comprehensive process memory required for deep debugging of intermittent 500 errors.

Detailed technical explanation

How to think about this question

App Service Diagnostics uses the 'Diagnose and Solve Problems' blade, where you can configure a 'Memory Dump' collection rule based on HTTP status codes (e.g., 500) or specific exceptions. The dump is saved as a .dmp file in the site's storage, which can be downloaded and analyzed with tools like WinDbg or Visual Studio. This is particularly useful for intermittent errors that are hard to reproduce locally, as it captures the entire process memory including heap, threads, and loaded modules at the moment of failure.

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

An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.

What to study next

Got this wrong? Here's your next step.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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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: Use App Service Diagnostics to collect a memory dump — Option B is correct because App Service Diagnostics provides a built-in 'Collect Memory Dump' tool that can be triggered on specific HTTP error codes, such as 500 Internal Server Error. This allows you to capture a full process dump of the web app when the error occurs, enabling offline analysis of the failure without modifying application code.

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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Same concept, more angles

1 more ways this is tested on AZ-204

These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.

Variation 1. An Azure web app is experiencing high memory usage. You want to collect memory dumps periodically to analyze the issue without restarting the app. Which Azure App Service diagnostic feature should you use?

medium
  • A.Application Insights Profiler
  • B.Diagnostic Settings
  • C.Application Snapshot Debugger
  • D.Auto-healing

Why C: The Application Snapshot Debugger is the correct feature because it captures memory dumps (snapshots) of a production web app at the point of an exception or high memory usage without restarting the app. It is specifically designed for debugging memory leaks and high CPU/memory issues in Azure App Service, providing a periodic snapshot of the process heap.

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Last reviewed: Jul 4, 2026

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This AZ-204 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AZ-204 exam.