The answer is to enable the 'Require signed commits' option in the CodeCommit repository settings. This is the simplest way to enforce GPG-signed commits because CodeCommit natively supports a repository-level policy that rejects any unsigned or improperly signed commits at the server side, making it impossible for developers to bypass the requirement. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this question tests your understanding of native AWS security controls versus client-side or audit-only solutions; a common trap is confusing IAM policies or CloudTrail with enforcement mechanisms, or assuming pre-commit hooks are sufficient when they can be easily circumvented. Remember that for server-side enforcement in CodeCommit, you must use the repository settings directly—think "repo rules, not IAM tools" to avoid the trap.
DOP-C02 SDLC Automation Practice Question
This DOP-C02 practice question tests your understanding of sdlc automation. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
A team is using AWS CodeCommit as their version control system. They want to ensure that all commits are signed with a GPG key. What is the simplest way to enforce this?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable the 'Require signed commits' option in the CodeCommit repository settings.
Option C is correct because CodeCommit supports repository-level policies that can require signed commits. Option A is wrong because IAM policies cannot enforce signed commits at the repository level. Option B is wrong because pre-commit hooks are client-side and can be bypassed. Option D is wrong because CloudTrail logs actions but does not enforce signing.
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 AWS CloudTrail to monitor unsigned commits and automatically revert them.
Why it's wrong here
CloudTrail logs actions but does not enforce signing or revert commits.
✗
Use a pre-commit hook in the local repository to enforce signing.
Why it's wrong here
Pre-commit hooks are client-side and can be bypassed by users.
✗
Configure an IAM policy that denies PutFile if the commit is not signed.
Why it's wrong here
IAM policies cannot inspect commit signatures; they only control API access.
✓
Enable the 'Require signed commits' option in the CodeCommit repository settings.
Why this is correct
This repository setting enforces that all commits must be signed.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Got this wrong? Here's your next step.
Identify which DOP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
SDLC Automation — This question tests SDLC Automation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable the 'Require signed commits' option in the CodeCommit repository settings. — Option C is correct because CodeCommit supports repository-level policies that can require signed commits. Option A is wrong because IAM policies cannot enforce signed commits at the repository level. Option B is wrong because pre-commit hooks are client-side and can be bypassed. Option D is wrong because CloudTrail logs actions but does not enforce signing.
What should I do if I get this DOP-C02 question wrong?
Identify which DOP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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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