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Design and implement build and release pipelines →hardMultiple ChoiceObjective-mapped

AZ-400 Practice Question: Design and implement build and release pipelines

This AZ-400 practice question tests your understanding of design and implement build and release pipelines. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.

Exhibit

Refer to the exhibit.
```json
{
  "name": "Deploy to AKS",
  "type": "DeployPipeline",
  "environment": "production",
  "strategy": {
    "runOnce": {
      "deploy": {
        "steps": [
          {
            "task": "Kubernetes@1",
            "inputs": {
              "kubernetesServiceConnection": "aks-prod",
              "namespace": "prod",
              "manifests": "$(Build.ArtifactStagingDirectory)/deployment.yaml"
            }
          }
        ]
      }
    }
  },
  "approvals": [
    {
      "approvers": [
        "user@contoso.com"
      ]
    }
  ]
}
```

Refer to the exhibit. This is a deployment job definition in a multi-stage YAML pipeline. The deployment fails because the Kubernetes service connection 'aks-prod' cannot be found. What is the most likely cause?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

  • Clue: "most likely"

    Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

Question 1hardmultiple choice
Full question →

Exhibit

Refer to the exhibit.
```json
{
  "name": "Deploy to AKS",
  "type": "DeployPipeline",
  "environment": "production",
  "strategy": {
    "runOnce": {
      "deploy": {
        "steps": [
          {
            "task": "Kubernetes@1",
            "inputs": {
              "kubernetesServiceConnection": "aks-prod",
              "namespace": "prod",
              "manifests": "$(Build.ArtifactStagingDirectory)/deployment.yaml"
            }
          }
        ]
      }
    }
  },
  "approvals": [
    {
      "approvers": [
        "user@contoso.com"
      ]
    }
  ]
}
```

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

The service connection 'aks-prod' does not exist in the Azure DevOps project.

The service connection name in YAML must match the name defined in Azure DevOps project settings. Option A is wrong because agent pool configuration does not affect service connection resolution. Option C is wrong because the approval only affects gate, not service connection existence. Option D is wrong because namespace is a Kubernetes concept, not related to service connection.

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.

  • ✗

    The approval for production environment is blocking the deployment.

    Why it's wrong here

    Approvals do not cause 'not found' errors; they pause the pipeline.

  • ✗

    The agent pool does not have access to the AKS cluster.

    Why it's wrong here

    Agent pool access is separate from service connection definition.

  • ✓

    The service connection 'aks-prod' does not exist in the Azure DevOps project.

    Why this is correct

    The YAML references a service connection that must be created in the project.

    Clue confirmation

    The clue word "most likely" in the question point toward this answer.

    Related concept

    Read the scenario before looking for a memorised answer.

  • ✗

    The namespace 'prod' does not exist in the AKS cluster.

    Why it's wrong here

    Namespace absence would cause a different error during manifest apply.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.

Detailed technical explanation

How to think about this question

This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.

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.
  • Use explanations to understand the rule behind the answer.

TExam Day Tips

  • Underline the problem statement mentally.
  • 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 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.

What to study next

Got this wrong? Here's your next step.

Identify which AZ-400 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

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FAQ

Questions learners often ask

What does this AZ-400 question test?

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..

What is the correct answer to this question?

The correct answer is: The service connection 'aks-prod' does not exist in the Azure DevOps project. — The service connection name in YAML must match the name defined in Azure DevOps project settings. Option A is wrong because agent pool configuration does not affect service connection resolution. Option C is wrong because the approval only affects gate, not service connection existence. Option D is wrong because namespace is a Kubernetes concept, not related to service connection.

What should I do if I get this AZ-400 question wrong?

Identify which AZ-400 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

Are there clue words in this question I should notice?

Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

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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Last reviewed: Jun 20, 2026

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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.