- A
Add a branch creation trigger in CodeCommit that starts the pipeline.
Why wrong: CodeCommit does not have branch creation triggers; it uses events.
- B
Create a CloudWatch Events rule that matches CodeCommit push events and targets the CodePipeline pipeline.
CloudWatch Events can detect pushes to any branch and trigger the pipeline.
- C
Create an SNS topic and subscribe the pipeline to it, then configure CodeCommit to publish to the topic on push.
Why wrong: CodeCommit integrates with CloudWatch Events, not directly with SNS for pipeline triggers.
- D
Configure the pipeline to poll the CodeCommit repository every few minutes.
Why wrong: Polling is inefficient and not a best practice; CloudWatch Events is preferred.
Question 486 of 1,750
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 company is implementing a CI/CD pipeline using AWS CodePipeline. The source code is stored in an AWS CodeCommit repository. The pipeline must automatically start whenever a change is pushed to any branch. Which configuration is required?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a CloudWatch Events rule that matches CodeCommit push events and targets the CodePipeline pipeline.
Option B is correct because AWS CodePipeline can be triggered automatically by Amazon CloudWatch Events when a CodeCommit repository receives a push event. By creating a CloudWatch Events rule that matches the `codecommit:GitPush` event source and targets the pipeline, the pipeline starts automatically on any branch push without polling or manual intervention.
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.
- ✗
Add a branch creation trigger in CodeCommit that starts the pipeline.
Why it's wrong here
CodeCommit does not have branch creation triggers; it uses events.
- ✓
Create a CloudWatch Events rule that matches CodeCommit push events and targets the CodePipeline pipeline.
Why this is correct
CloudWatch Events can detect pushes to any branch and trigger the pipeline.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create an SNS topic and subscribe the pipeline to it, then configure CodeCommit to publish to the topic on push.
Why it's wrong here
CodeCommit integrates with CloudWatch Events, not directly with SNS for pipeline triggers.
- ✗
Configure the pipeline to poll the CodeCommit repository every few minutes.
Why it's wrong here
Polling is inefficient and not a best practice; CloudWatch Events is preferred.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume CodeCommit has a built-in trigger for CodePipeline (like Option A) or that SNS can directly trigger CodePipeline (like Option C), but AWS requires CloudWatch Events as the intermediary for event-driven pipeline starts.
Detailed technical explanation
How to think about this question
Under the hood, CloudWatch Events captures the `codecommit:GitPush` event from the repository's event stream, which includes details like the branch name and commit ID. The event rule then forwards the event to CodePipeline, which uses the branch name to determine which pipeline execution to start. A subtle behavior is that if you want to trigger only specific branches, you can add a branch filter in the CloudWatch Events rule's event pattern, but the question requires triggering on any branch, so no filter is needed.
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.
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.
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SDLC Automation — study guide chapter
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FAQ
Questions learners often ask
What does this DOP-C02 question test?
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: Create a CloudWatch Events rule that matches CodeCommit push events and targets the CodePipeline pipeline. — Option B is correct because AWS CodePipeline can be triggered automatically by Amazon CloudWatch Events when a CodeCommit repository receives a push event. By creating a CloudWatch Events rule that matches the `codecommit:GitPush` event source and targets the pipeline, the pipeline starts automatically on any branch push without polling or manual intervention.
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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Last reviewed: Jul 4, 2026
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