AZ-204 Practice Question: Monitor, troubleshoot, and optimize Azure solutions
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. A key principle to apply: application Insights collects application performance telemetry, including request latency.. 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.
A developer needs to run a Kusto query against application request data to identify 95th percentile latency by operation. Where should the query be run? The architecture review board prefers a managed AWS-native control.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Logs in Application Insights or the associated Log Analytics workspace
Application Insights stores telemetry data, including request latency, in a Log Analytics workspace. Kusto queries against this data can compute percentiles (e.g., 95th) using the `percentile()` function. This is the correct location because the architecture review board prefers a managed AWS-native control, and Log Analytics is the native Azure monitoring service for running such queries.
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Logs in Application Insights or the associated Log Analytics workspace
Why this is correct
Application Insights stores telemetry that can be queried with KQL in Logs.
Related concept
Application Insights collects application performance telemetry, including request latency.
✗
Microsoft Entra audit logs
Why it's wrong here
Entra audit logs track identity events, not application performance telemetry.
✗
Azure Key Vault diagnostic settings
Why it's wrong here
Key Vault logs do not contain application request latency.
✗
Azure Resource Graph only
Why it's wrong here
Resource Graph queries Azure resource metadata, not application request telemetry.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse Azure Resource Graph with Log Analytics, thinking it can query telemetry data, but Resource Graph only returns resource inventory and configuration state, not performance metrics.
Detailed technical explanation
How to think about this question
Kusto queries in Log Analytics use the `requests` table to access application request data, where the `duration` column holds latency in milliseconds. The `percentile(duration, 95)` function computes the 95th percentile efficiently using a T-Digest algorithm, which is optimized for streaming data. In a real-world scenario, this query helps identify slow operations for performance tuning, and the results can be visualized in Application Insights dashboards or exported to Azure Monitor workbooks.
KKey Concepts to Remember
Application Insights collects application performance telemetry, including request latency.
Application Insights data is stored in an Azure Log Analytics workspace.
Kusto Query Language (KQL) is used to query data in Log Analytics workspaces.
KQL supports advanced analytical functions like `percentile()` for performance analysis.
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
Application Insights collects application performance telemetry, including request latency.
Real-world example
How this comes up in practice
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-204 question in full detail.
Review application Insights collects application performance telemetry, including request latency., then practise related AZ-204 questions on the same topic to reinforce the concept.
Monitor, troubleshoot, and optimize Azure solutions — This question tests Monitor, troubleshoot, and optimize Azure solutions — Application Insights collects application performance telemetry, including request latency..
What is the correct answer to this question?
The correct answer is: Logs in Application Insights or the associated Log Analytics workspace — Application Insights stores telemetry data, including request latency, in a Log Analytics workspace. Kusto queries against this data can compute percentiles (e.g., 95th) using the `percentile()` function. This is the correct location because the architecture review board prefers a managed AWS-native control, and Log Analytics is the native Azure monitoring service for running such queries.
What should I do if I get this AZ-204 question wrong?
Review application Insights collects application performance telemetry, including request latency., then practise related AZ-204 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Application Insights collects application performance telemetry, including request latency.
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