The correct answer is to configure the source action to use CodeCommit as the source provider and specify the 'develop' branch. This works because when you select CodeCommit as the source provider in a pipeline, CodePipeline automatically creates an Amazon CloudWatch Events rule that listens for branch push events on the specified branch, triggering the pipeline execution without any additional manual steps. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this concept tests your understanding of how CodePipeline natively integrates with CodeCommit via event-driven triggers, often appearing as a distractor where candidates mistakenly think they need to set up S3 event notifications or manual approval actions. A common trap is confusing CodeCommit triggers with S3 event notifications or assuming CodeBuild must be configured separately to start the pipeline. Memory tip: think of the pipeline source action as the "listener" — specify the branch name directly in the source configuration, and CloudWatch Events does the listening for you.
DOP-C02 SDLC Automation Practice Question
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 development team is using AWS CodeCommit as a source repository and AWS CodePipeline to automate their CI/CD pipeline. The pipeline includes a build stage that runs on AWS CodeBuild. The team wants to automatically trigger the pipeline when changes are pushed to the 'develop' branch of the CodeCommit repository. Which configuration change should be made to the pipeline?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure the source action to use CodeCommit as the source provider and specify the 'develop' branch.
Option B is correct because CodePipeline can be configured with a source action that uses the 'Amazon S3' (via CodeCommit webhook) or directly with CodeCommit as the source provider, and a cloudwatch event rule is automatically created to trigger the pipeline on changes to the specified branch. Option A is wrong because manual approval is not needed for automatic triggering. Option C is wrong because CodeBuild can be triggered independently, but the pipeline itself needs a source trigger. Option D is wrong because S3 events are not used for CodeCommit.
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 S3 event notifications on the repository to invoke the pipeline.
Why it's wrong here
CodeCommit is not an S3 bucket; S3 events are not applicable.
✗
Add a manual approval action before the build stage.
Why it's wrong here
Manual approval prevents automatic triggering.
✓
Configure the source action to use CodeCommit as the source provider and specify the 'develop' branch.
Why this is correct
This sets up a CloudWatch Events rule to start the pipeline on changes to that branch.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create a CodeBuild webhook on the CodeCommit repository.
Why it's wrong here
CodeBuild webhooks trigger builds, not the pipeline.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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: Configure the source action to use CodeCommit as the source provider and specify the 'develop' branch. — Option B is correct because CodePipeline can be configured with a source action that uses the 'Amazon S3' (via CodeCommit webhook) or directly with CodeCommit as the source provider, and a cloudwatch event rule is automatically created to trigger the pipeline on changes to the specified branch. Option A is wrong because manual approval is not needed for automatic triggering. Option C is wrong because CodeBuild can be triggered independently, but the pipeline itself needs a source trigger. Option D is wrong because S3 events are not used for CodeCommit.
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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