AZ-400 Implement an instrumentation strategy Practice Question
This AZ-400 practice question tests your understanding of implement an instrumentation strategy. 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.
A company runs a critical microservices application on Azure Kubernetes Service (AKS). They need to implement distributed tracing across services using Application Insights. Which three actions should be performed?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use OpenTelemetry SDK with Application Insights exporter
Option B is correct because OpenTelemetry is the industry standard for distributed tracing, and the Application Insights exporter allows telemetry data to be sent directly to Azure Monitor. This approach provides a vendor-neutral instrumentation layer that works across multiple languages and platforms, making it ideal for microservices on AKS.
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.
✗
Deploy the Application Insights agent as a DaemonSet on each AKS node
Why it's wrong here
Agent collects node-level metrics, not distributed tracing.
✓
Use OpenTelemetry SDK with Application Insights exporter
Why this is correct
OpenTelemetry provides standardized distributed tracing and can export to Application Insights.
Related concept
Read the scenario before looking for a memorised answer.
✓
Instrument each microservice with the Application Insights SDK
Why this is correct
SDK generates telemetry for distributed tracing.
Related concept
Read the scenario before looking for a memorised answer.
✓
Set the same instrumentation key for all microservices
Why this is correct
Same key correlates traces across services in a single Application Insights resource.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enable Azure Monitor Container Insights on the AKS cluster
Why it's wrong here
Container Insights provides metrics and logs, not distributed tracing.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is confusing infrastructure monitoring (Container Insights) with application-level distributed tracing, leading candidates to select options that collect metrics but fail to provide the cross-service correlation needed for distributed tracing.
Detailed technical explanation
How to think about this question
Distributed tracing relies on context propagation via trace headers (e.g., W3C Trace-Context), which OpenTelemetry handles automatically across service boundaries. The Application Insights exporter converts OpenTelemetry spans into the Application Insights data model, enabling correlation of requests across multiple microservices in a single end-to-end view. In a real-world scenario, this allows a DevOps engineer to pinpoint a latency spike in a specific service within a complex AKS deployment.
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-400 question in full detail.
Implement an instrumentation strategy — This question tests Implement an instrumentation strategy — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use OpenTelemetry SDK with Application Insights exporter — Option B is correct because OpenTelemetry is the industry standard for distributed tracing, and the Application Insights exporter allows telemetry data to be sent directly to Azure Monitor. This approach provides a vendor-neutral instrumentation layer that works across multiple languages and platforms, making it ideal for microservices on AKS.
What should I do if I get this AZ-400 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
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This AZ-400 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-400 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.