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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

{
  "triggers": ["master", "develop"],
  "phases": [
    {
      "phase": "Build",
      "steps": [
        {
          "task": "DotNetCoreCLI@2",
          "inputs": {
            "command": "build",
            "projects": "**/*.csproj"
          }
        }
      ]
    },
    {
      "phase": "Test",
      "steps": [
        {
          "task": "VSTest@2",
          "inputs": {
            "testSelector": "testAssemblies",
            "testAssemblyVer2": "**\\*test*.dll",
            "searchFolder": "$(System.DefaultWorkingDirectory)"
          }
        }
      ]
    }
  ]
}

Refer to the exhibit. Your team uses a classic build pipeline. You notice that test assemblies are not being found during the Test phase. Which change resolves the issue?

Question 1hardmultiple choice
Full question →

Exhibit

{
  "triggers": ["master", "develop"],
  "phases": [
    {
      "phase": "Build",
      "steps": [
        {
          "task": "DotNetCoreCLI@2",
          "inputs": {
            "command": "build",
            "projects": "**/*.csproj"
          }
        }
      ]
    },
    {
      "phase": "Test",
      "steps": [
        {
          "task": "VSTest@2",
          "inputs": {
            "testSelector": "testAssemblies",
            "testAssemblyVer2": "**\\*test*.dll",
            "searchFolder": "$(System.DefaultWorkingDirectory)"
          }
        }
      ]
    }
  ]
}

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

✓

Set searchFolder to $(Build.BinariesDirectory)

The VSTest task searches for test DLLs in the source folder, but the build output goes to a subfolder like $(Build.BinariesDirectory). Setting searchFolder to the correct output path allows discovery. Option B is wrong because using full paths is not necessary if searchFolder is correct. Option C is wrong because buildConfiguration is already set correctly. Option D is wrong because the issue is not about failing tests but finding them.

Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✗

    Change testSelector to 'testMethod'

    Why it's wrong here

    The selector is not causing the missing files.

  • ✗

    Use fully qualified paths in testAssemblyVer2

    Why it's wrong here

    Fully qualified paths are not needed if searchFolder is correct.

  • ✗

    Add buildConfiguration: 'Release' to the DotNetCoreCLI task

    Why it's wrong here

    Configuration is not the issue.

  • ✓

    Set searchFolder to $(Build.BinariesDirectory)

    Why this is correct

    Test DLLs are in the build output folder.

    Related concept

    Static NAT maps one inside address to one outside address.

Common exam traps

Common exam trap: NAT rules depend on direction and matching traffic

NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.

Detailed technical explanation

How to think about this question

NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.

KKey Concepts to Remember

  • Static NAT maps one inside address to one outside address.
  • PAT allows many inside hosts to share one public address using ports.
  • Inside local and inside global describe the private and translated addresses.
  • NAT ACLs identify traffic for translation, not always security filtering.

TExam Day Tips

  • Identify inside and outside interfaces first.
  • Check whether the scenario needs static NAT, dynamic NAT or PAT.
  • Do not confuse NAT matching ACLs with normal packet-filtering intent.

Key takeaway

NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.

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. NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated. 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

Got this wrong? Here's your next step.

Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related AZ-400 NAT questions on configuration and troubleshooting.

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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 — Static NAT maps one inside address to one outside address..

What is the correct answer to this question?

The correct answer is: Set searchFolder to $(Build.BinariesDirectory) — The VSTest task searches for test DLLs in the source folder, but the build output goes to a subfolder like $(Build.BinariesDirectory). Setting searchFolder to the correct output path allows discovery. Option B is wrong because using full paths is not necessary if searchFolder is correct. Option C is wrong because buildConfiguration is already set correctly. Option D is wrong because the issue is not about failing tests but finding them.

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

Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related AZ-400 NAT questions on configuration and troubleshooting.

What is the key concept behind this question?

Static NAT maps one inside address to one outside address.

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Last reviewed: Jun 20, 2026

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