This DOP-C02 practice question tests your understanding of sdlc automation. 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.
A company uses AWS CodeCommit and wants to enforce that all commits to the main branch are signed. What must be configured to enforce this requirement?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure a repository policy that requires signed commits.
AWS CodeCommit supports repository policies that can enforce commit signing by denying `codecommit:GitPush` unless the commit is signed with a GPG key. This is done using the `git:IsSigned` condition key in an IAM-based resource policy attached to the repository. Option A is correct because it directly configures this policy to reject unsigned pushes to 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.
✓
Configure a repository policy that requires signed commits.
Why this is correct
CodeCommit supports repository policies to require commit signing.
Related concept
Read the scenario before looking for a memorised answer.
✗
Assign an IAM role that only allows signed API calls.
Why it's wrong here
IAM roles do not enforce commit signing.
✗
Use a pre-commit hook in the local repository.
Why it's wrong here
Pre-commit hooks are client-side and not enforced.
✗
Set up a CloudWatch Events rule to reject unsigned commits.
Why it's wrong here
CloudWatch Events cannot enforce signing.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse client-side Git hooks (pre-commit) with server-side enforcement, or assume CloudWatch Events can block API calls, when only a repository policy with the `git:IsSigned` condition can enforce signed commits at the service level.
Detailed technical explanation
How to think about this question
Under the hood, CodeCommit uses the `git:IsSigned` condition key in a repository policy to evaluate the `codecommit:GitPush` action. The condition checks for a valid GPG signature on the commit object, leveraging Git's built-in signing mechanism (RFC 4880). In a real-world scenario, you would also configure a branch protection rule (via the same policy) to target only the main branch using the `git:RefName` condition key, ensuring unsigned commits are rejected only on protected branches.
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 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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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: Configure a repository policy that requires signed commits. — AWS CodeCommit supports repository policies that can enforce commit signing by denying `codecommit:GitPush` unless the commit is signed with a GPG key. This is done using the `git:IsSigned` condition key in an IAM-based resource policy attached to the repository. Option A is correct because it directly configures this policy to reject unsigned pushes to the main branch.
What should I do if I get this DOP-C02 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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This DOP-C02 practice question is part of Courseiva's free Amazon Web Services 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 DOP-C02 exam.
Question Discussion
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