20+ practice questions focused on Design and implement source control — one of the most tested topics on the Microsoft Azure DevOps Engineer Expert AZ-400 exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start Design and implement source control PracticeA team uses a monorepo with multiple projects in one Git repository. They want to enforce that each commit message must reference a work item from Azure Boards. Which branch policy should they configure?
Explanation: The 'Require a work item linking policy' in Azure Repos branch policies enforces that every pull request must be associated with at least one Azure Boards work item before it can be completed. This policy directly meets the requirement to ensure each commit message references a work item, as the linking is validated at merge time.
An organization has multiple Git repositories. Developers often forget to update the repository README file after making changes. What is the most effective way to ensure the README is always up-to-date?
Explanation: Option C is correct because using a repository template with a mandatory README file structure enforces a consistent baseline for all new repositories, ensuring that a README is always present and follows a predefined format. This approach addresses the root cause—developers forgetting to update the README—by making the README an integral part of the repository creation process, rather than relying on post-hoc checks or manual reviews. In Azure Repos, repository templates can include required files and folder structures, which are automatically applied when a new repository is created from the template, thereby preventing the omission of the README from the start.
A development team uses a forking workflow in Azure Repos. They want to ensure that only specific users can create forks of the main repository. How can they achieve this?
Explanation: In Azure Repos, the ability to create forks is controlled by a specific permission called 'Create Fork' at the repository level. By default, all contributors have this permission. To restrict fork creation to only specific users, you must remove the 'Create Fork' permission from all users and groups, then explicitly grant it only to the desired group or individuals. This is a permission-based security model, not a branch policy or global toggle.
A team uses Git for source control. They want to automatically squash all commits in a feature branch into a single commit when merging to the main branch. Which merge type should they use?
Explanation: B is correct because the squash commit merge type collapses all commits in a feature branch into a single new commit on the target branch. This satisfies the requirement to automatically squash all commits when merging to main, as it creates a clean, linear history with one combined commit that contains all changes from the feature branch.
A company has a policy that all code changes must be reviewed by at least two people. However, for urgent bug fixes, they want to allow a single reviewer. How should they configure the branch policy?
Explanation: Option D is correct because Azure Repos branch policies allow you to set a minimum number of reviewers (e.g., 2) and then enable the 'Allow policy override' setting for urgent fixes. This lets authorized users bypass the two-reviewer requirement for critical bug fixes while maintaining the default policy for normal changes.
+15 more Design and implement source control questions available
Practice all Design and implement source control questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of Design and implement source control. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
Design and implement source control questions on the AZ-400 frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. Design and implement source control is tested as part of the Microsoft Azure DevOps Engineer Expert AZ-400 blueprint. Practicing with targeted Design and implement source control questions ensures you can handle any format or difficulty that appears.
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Difficulty is subjective, but Design and implement source control is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
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