The answer is the Performance blade, specifically drilling into Dependencies. This is correct because Application Insights automatically tracks dependency calls like SQL queries as part of distributed tracing, and the Performance blade aggregates this data by operation and duration. By selecting the slow SQL dependency, you can open the Dependencies tab to view the exact query text, call duration, and failure rate, directly pinpointing the problematic query without any code changes. On the AZ-204 exam, this tests your understanding of Application Insights’ built-in monitoring features versus custom queries in Log Analytics—a common trap is jumping straight to writing KQL when the Performance blade already surfaces the slow query text. Remember the memory tip: “Performance first, drill to find the worst.” This means start with the Performance blade to spot the slowest dependency, then drill into its details to see the exact SQL statement.
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 Performance blade aggregates dependency telemetry.. 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 are monitoring an Azure Web App with Application Insights. You notice that the dependency duration for a SQL database call has significantly increased. You need to identify the specific SQL query that is causing the slowness. Which Application Insights feature should you use?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Performance blade and drill into Dependencies
The Performance blade in Application Insights allows you to drill into specific operations, including dependencies. By selecting the SQL dependency with increased duration, you can view the 'Dependencies' tab to see the exact SQL query text, duration, and other details. This directly identifies the slow query without needing to instrument code changes.
Live Metrics is for real-time monitoring and does not provide historical drill-down into specific queries.
✗
Smart Detection
Why it's wrong here
Smart Detection identifies anomalies and sends alerts but does not show the specific SQL query details.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse the high-level monitoring view (Application Map) or real-time streaming (Live Metrics) with the diagnostic drill-down capability of the Performance blade, which is specifically designed for root-cause analysis of slow operations.
Trap categories for this question
Command / output trap
Application Map visualizes the flow and dependencies but does not show detailed query texts.
Detailed technical explanation
How to think about this question
Application Insights captures dependency telemetry via the DependencyTrackingTelemetryModule, which records the command text for SQL dependencies by default (unless disabled). The Performance blade aggregates this data into operation samples, and when you drill into a slow dependency, it surfaces the 'Command Text' property, which contains the exact SQL query. This is possible because the SQL dependency collector uses the SqlClient instrumentation to capture the CommandText property from the SqlCommand object.
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Application Insights Performance blade aggregates dependency telemetry. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
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 Performance blade aggregates dependency telemetry., 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 Performance blade aggregates dependency telemetry..
What is the correct answer to this question?
The correct answer is: Performance blade and drill into Dependencies — The Performance blade in Application Insights allows you to drill into specific operations, including dependencies. By selecting the SQL dependency with increased duration, you can view the 'Dependencies' tab to see the exact SQL query text, duration, and other details. This directly identifies the slow query without needing to instrument code changes.
What should I do if I get this AZ-204 question wrong?
Review application Insights Performance blade aggregates dependency telemetry., then practise related AZ-204 questions on the same topic to reinforce the concept.
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