This AZ-400 practice question tests your understanding of design and implement build and release pipelines. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 have a YAML pipeline that builds a .NET application. You need to ensure that the pipeline uses the .NET SDK version 6.0.x. Which task should you add to the pipeline?
NuGetToolInstaller@1
Why wrong: This installs NuGet, not the .NET SDK.
DotNetCoreCLI@2
Why wrong: This runs .NET commands but does not install a specific SDK version.
PowerShell@2
Why wrong: PowerShell can install SDK but it's not the built-in task for this purpose.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
UseDotNet@2
The UseDotNet@2 task is the correct choice because it explicitly installs a specific .NET SDK version (6.0.x) on the build agent, ensuring the pipeline uses the required SDK for building the .NET application. This task downloads and caches the SDK, making it available for subsequent tasks like DotNetCoreCLI@2.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
NuGetToolInstaller@1
Why it's wrong here
This installs NuGet, not the .NET SDK.
DotNetCoreCLI@2
Why it's wrong here
This runs .NET commands but does not install a specific SDK version.
PowerShell@2
Why it's wrong here
PowerShell can install SDK but it's not the built-in task for this purpose.
Option-by-option analysis
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The AZ-400 exam frequently reuses these exact scenarios with slightly different constraints.
Why this is wrong here
This installs NuGet, not the .NET SDK.
Why this is wrong here
This runs .NET commands but does not install a specific SDK version.
Why this is wrong here
PowerShell can install SDK but it's not the built-in task for this purpose.
Analysis generated from the official AZ-400blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
The trap here is that candidates often confuse DotNetCoreCLI@2 (which runs .NET commands) with UseDotNet@2 (which installs the SDK), assuming the build task itself can set the SDK version, but DotNetCoreCLI@2 only uses whatever SDK is already available.
Trap categories for this question
Command / output trap
This runs .NET commands but does not install a specific SDK version.
Detailed technical explanation
The UseDotNet@2 task leverages the Azure Pipelines tool cache to download the specified .NET SDK version from the official dotnet-install scripts, supporting both global.json and explicit version parameters. Under the hood, it sets the DOTNET_ROOT and PATH environment variables to point to the installed SDK, ensuring all subsequent .NET CLI commands use that exact version, which is critical when multiple SDK versions are present on the agent.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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.
What to study next
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FAQ
Design and implement build and release pipelines — This question tests Design and implement build and release pipelines — Read the scenario before looking for a memorised answer..
The correct answer is: UseDotNet@2 — The UseDotNet@2 task is the correct choice because it explicitly installs a specific .NET SDK version (6.0.x) on the build agent, ensuring the pipeline uses the required SDK for building the .NET application. This task downloads and caches the SDK, making it available for subsequent tasks like DotNetCoreCLI@2.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
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.
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