AZ-400 Continuous Integration 3

Question 1

A team needs to enforce that every pull request passes a build pipeline before merging. Which Azure DevOps feature should they configure?

Accepted Answer

Build validation branch policies

Answer

Build validation policies in Azure Repos require a specified pipeline to pass successfully before a pull request can be completed.

Question 2

What is the role of a 'self-hosted agent' in Azure Pipelines compared to a Microsoft-hosted agent?

Accepted Answer

It runs on infrastructure you manage, allowing custom software and network access

Answer

Self-hosted agents run on your own VMs or containers, giving you control over installed tools, network connectivity, and persistent caches between runs.

Question 3

Which Azure Pipelines variable predefined at runtime holds the unique identifier of the current pipeline run?

Accepted Answer

$(Build.BuildId)

Answer

$(Build.BuildId) is a predefined variable containing the unique numeric ID assigned to each pipeline run.

Question 4

What does the 'pool' keyword specify in an Azure Pipelines YAML job?

Accepted Answer

The agent pool or specific agent where the job's steps execute

Answer

The pool keyword designates which agent pool (or a specific agent) should be used to run the job's steps.

Question 5

A CI pipeline runs on every commit and takes 45 minutes. The team wants to reduce feedback time. What Azure Pipelines feature allows running independent test suites simultaneously?

Accepted Answer

Parallel jobs within a single stage using multiple job entries

Answer

Defining multiple jobs within the same stage runs them in parallel (subject to available agents), reducing total wall-clock time for independent work.

AZ-400 Practice Test

AZ-400 Practice Test

AZ-400 Continuous Integration 3