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. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 organization uses GitHub Enterprise and wants to enforce that all repositories have a consistent CODEOWNERS file. Which approach should you use to centrally manage this?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use repository rulesets to require that the CODEOWNERS file exists and has a specified pattern
Repository rulesets in GitHub Enterprise allow you to centrally enforce policies across all repositories in an organization, including requiring that a CODEOWNERS file exists and matches a specific pattern. This ensures consistency without manual intervention or per-repo configuration, leveraging GitHub's native repository management capabilities.
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.
✓
Use repository rulesets to require that the CODEOWNERS file exists and has a specified pattern
Why this is correct
Rulesets can enforce file presence and content.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create a CODEOWNERS file at the organization level
Why it's wrong here
CODEOWNERS is repository-specific.
✗
Use a script to push CODEOWNERS to each repo manually
Why it's wrong here
Manual pushes are not enforceable.
✗
Create a GitHub Actions workflow that runs on push to check CODEOWNERS
Why it's wrong here
Workflows cannot prevent pushes.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse organization-level CODEOWNERS (which doesn't exist) with repository rulesets, or assume a post-push check (like a workflow) is equivalent to a pre-push enforcement mechanism.
Detailed technical explanation
How to think about this question
Repository rulesets leverage GitHub's internal bypass and enforcement logic, allowing you to require file patterns (e.g., `.github/CODEOWNERS`) at the organization level, which are evaluated during push operations via pre-receive hooks. This approach integrates with branch protection rules and can be scoped to specific branches or repos, ensuring that any push lacking the required CODEOWNERS file is rejected before merge. In a real-world scenario, this prevents teams from accidentally omitting ownership definitions in new repositories, which is critical for compliance 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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-400 question in full detail.
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: Use repository rulesets to require that the CODEOWNERS file exists and has a specified pattern — Repository rulesets in GitHub Enterprise allow you to centrally enforce policies across all repositories in an organization, including requiring that a CODEOWNERS file exists and matches a specific pattern. This ensures consistency without manual intervention or per-repo configuration, leveraging GitHub's native repository management capabilities.
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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