The answer is Transaction Search. This is the correct choice because Transaction Search, now integrated into the Search experience within Application Insights, allows you to isolate a specific request and drill into its correlated dependency details, such as database calls and external HTTP requests, revealing the exact duration and sequence of each dependency. On the AZ-204 exam, this tests your understanding of distributed tracing and end-to-end transaction diagnostics in Azure Monitor, often appearing in scenarios where you must pinpoint which dependency caused a slow API call. A common trap is confusing Transaction Search with Performance or Failures blades, which show aggregated metrics rather than per-request dependency chains. Remember: when you need to follow a single request through its dependencies, think Transaction Search—it’s the forensic tool for tracing the “why” behind a slow call.
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. 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 are investigating a slow API call in your Azure web app. Application Insights shows that the request took 10 seconds. You need to view all the dependencies (database calls, external HTTP requests) that contributed to this request. What 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
✓
Transaction Search
Transaction Search (now part of the 'Search' experience in Application Insights) allows you to query individual requests and drill into their correlated dependency calls, such as SQL queries or external HTTP requests, showing the exact duration and sequence of each dependency. This is the correct tool to identify which specific dependencies contributed to the 10-second request latency.
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.
✗
Application Map
Why it's wrong here
Application Map provides a topological view of dependencies across your application but does not show per-request details.
✗
Live Metrics
Why it's wrong here
Live Metrics streams real-time telemetry but does not allow diving into a specific historical request.
✓
Transaction Search
Why this is correct
Transaction Search lets you find a specific request by its ID or properties and view the full transaction trace including all dependencies.
Related concept
Read the scenario before looking for a memorised answer.
✗
Usage Analysis
Why it's wrong here
Usage Analysis is for understanding user behavior and retention, not for debugging individual slow requests.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Application Map (a high-level topology view) with the detailed dependency drill-down available in Transaction Search, leading them to choose A when they need to see the specific calls and timings for a single request.
Trap categories for this question
Command / output trap
Application Map provides a topological view of dependencies across your application but does not show per-request details.
Detailed technical explanation
How to think about this question
Under the hood, Transaction Search leverages the Application Insights end-to-end transaction correlation, which uses a unique operation ID (e.g., 'ai.operation.id') to link all telemetry items (requests, dependencies, exceptions) from a single user request. When you click on a request in Transaction Search, it queries the Application Insights backend for all telemetry with the same operation ID, allowing you to see the waterfall of dependency calls and their individual durations, which is critical for pinpointing a slow database query or external API call.
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 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. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. 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.
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: Transaction Search — Transaction Search (now part of the 'Search' experience in Application Insights) allows you to query individual requests and drill into their correlated dependency calls, such as SQL queries or external HTTP requests, showing the exact duration and sequence of each dependency. This is the correct tool to identify which specific dependencies contributed to the 10-second request latency.
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.
About these practice questions
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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. You are using Application Insights to monitor a web application. You notice that a specific request is slow. You want to see the complete end-to-end transaction details, including all dependency calls and exceptions for that single request. Which feature should you use?
Why B: Transaction Search (End-to-End Transaction Details) is the correct feature because it allows you to view the complete trace of a single request, including all dependency calls (e.g., SQL, HTTP, Azure services), exceptions, and logs associated with that specific operation. This is achieved by correlating telemetry using the operation_Id field, which groups all telemetry items from the same request into a single end-to-end view. Other features like Metrics Explorer or Application Map provide aggregated or topological views, not per-request drill-down.
Last reviewed: Jun 11, 2026
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