AZ-400 Configure processes and communications Practice Question
This AZ-400 practice question tests your understanding of configure processes and communications. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Which TWO practices help improve the efficiency of code reviews? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Keep pull requests small and focused on a single change.
Keeping pull requests small and focused on a single change (Option A) improves code review efficiency because it reduces cognitive load on reviewers, allowing them to understand and evaluate the change quickly without context-switching. Smaller PRs also enable faster feedback loops and easier rollback if issues are found, which aligns with DevOps principles of continuous integration and delivery.
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.
✓
Keep pull requests small and focused on a single change.
Why this is correct
Small PRs are easier and faster to review.
Related concept
Read the scenario before looking for a memorised answer.
✗
Include multiple unrelated changes in a single pull request to reduce the number of PRs.
Why it's wrong here
Unrelated changes complicate review.
✗
Assign as many reviewers as possible to ensure thoroughness.
Why it's wrong here
Too many reviewers can cause delays and confusion.
✗
Require that all team members review every pull request.
Why it's wrong here
Not all members need to review every PR; it can be inefficient.
✓
Use a code review checklist to ensure common issues are checked.
Why this is correct
Checklists improve consistency.
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 may think more reviewers or requiring all team members to review ensures quality, but in practice, it reduces efficiency and accountability, while small, focused PRs and checklists are proven to improve both speed and accuracy.
Trap categories for this question
Similar concept trap
Too many reviewers can cause delays and confusion.
Detailed technical explanation
How to think about this question
In Azure Repos or GitHub, pull requests are built on top of Git's diff mechanism; a small, focused PR generates a concise diff that is easier to validate against the codebase. Using a code review checklist (Option E) enforces consistent checks for common issues like security vulnerabilities, coding standards, or test coverage, which can be automated via branch policies or CI pipelines (e.g., Azure Pipelines) to catch problems before human review. Real-world scenarios show that teams adopting small PRs (under 200 lines) and checklists reduce review time by up to 50% and defect escape rates significantly.
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.
Configure processes and communications — This question tests Configure processes and communications — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Keep pull requests small and focused on a single change. — Keeping pull requests small and focused on a single change (Option A) improves code review efficiency because it reduces cognitive load on reviewers, allowing them to understand and evaluate the change quickly without context-switching. Smaller PRs also enable faster feedback loops and easier rollback if issues are found, which aligns with DevOps principles of continuous integration and delivery.
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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