- A
Enable 'Check for linked work items' and 'Require a minimum number of reviewers' set to 2, and enable 'Reset code reviewer votes when new changes are pushed'.
Why wrong: Linked work items are not required for this scenario.
- B
Add the 'main' branch to the 'Required reviewers' list and add all developers as required reviewers.
Why wrong: This would require all developers to review, not just two.
- C
Enable 'Require a minimum number of reviewers' set to 2, and enable 'Build validation' with a required build.
Why wrong: Build validation is separate and does not prevent self-approval.
- D
Enable 'Require a minimum number of reviewers' set to 2, and enable 'Allow users to approve their own changes' unchecked (or set to false).
This enforces two approvals and prevents self-approval.
AZ-400 Practice Question: Design and implement a source control strategy
This AZ-400 practice question tests your understanding of design and implement a source control strategy. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
Your team uses Azure DevOps and wants to enforce that all changes to the main branch go through a pull request process with at least two approvals. They also want to prevent contributors from approving their own pull requests. Which branch policy settings should they use?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"least"Why it matters: You want the option with minimum overhead, fewest steps, or lowest impact — not the most feature-rich or comprehensive answer.
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
Enable 'Require a minimum number of reviewers' set to 2, and enable 'Allow users to approve their own changes' unchecked (or set to false).
Option D is correct because it directly addresses both requirements: setting 'Require a minimum number of reviewers' to 2 enforces at least two approvals, and unchecking 'Allow users to approve their own changes' prevents contributors from approving their own pull requests. These are branch policy settings within Azure Repos that control the pull request workflow on the main branch.
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.
- ✗
Enable 'Check for linked work items' and 'Require a minimum number of reviewers' set to 2, and enable 'Reset code reviewer votes when new changes are pushed'.
Why it's wrong here
Linked work items are not required for this scenario.
- ✗
Add the 'main' branch to the 'Required reviewers' list and add all developers as required reviewers.
Why it's wrong here
This would require all developers to review, not just two.
- ✗
Enable 'Require a minimum number of reviewers' set to 2, and enable 'Build validation' with a required build.
Why it's wrong here
Build validation is separate and does not prevent self-approval.
- ✓
Enable 'Require a minimum number of reviewers' set to 2, and enable 'Allow users to approve their own changes' unchecked (or set to false).
Why this is correct
This enforces two approvals and prevents self-approval.
Clue confirmation
The clue word "least" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse 'Require a minimum number of reviewers' with 'Required reviewers' (a static list) or think that build validation alone satisfies the approval requirement, missing the need to explicitly disable self-approval.
Trap categories for this question
Scenario analysis trap
Linked work items are not required for this scenario.
Detailed technical explanation
How to think about this question
Under the hood, Azure Repos branch policies are enforced via the Git ref update hooks and the pull request merge pipeline. The 'Require a minimum number of reviewers' setting tracks the count of distinct users who have approved, not the total number of approval votes, and the 'Allow users to approve their own changes' checkbox is a boolean that, when unchecked, prevents the PR creator from being counted in the approval tally. In a real-world scenario, this prevents a developer from bypassing peer review by approving their own PR, which is a common compliance requirement in regulated environments.
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.
TExam Day Tips
- 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 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
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this AZ-400 question test?
Design and implement a source control strategy — This question tests Design and implement a source control strategy — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable 'Require a minimum number of reviewers' set to 2, and enable 'Allow users to approve their own changes' unchecked (or set to false). — Option D is correct because it directly addresses both requirements: setting 'Require a minimum number of reviewers' to 2 enforces at least two approvals, and unchecking 'Allow users to approve their own changes' prevents contributors from approving their own pull requests. These are branch policy settings within Azure Repos that control the pull request workflow on the main branch.
What should I do if I get this AZ-400 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "least". You want the option with minimum overhead, fewest steps, or lowest impact — not the most feature-rich or comprehensive answer.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 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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