- A
Create an Amazon CloudWatch Events rule that triggers the pipeline only when the branch is 'main'.
Why wrong: While this could work, it is more complex than the built-in option. CodePipeline's source action can directly set the branch, making separate rules unnecessary.
- B
Configure the pipeline's source stage to include the branch name in the CodeCommit action configuration.
The CodeCommit source action in CodePipeline allows you to specify the branch name. The pipeline will automatically start on pushes to that branch.
- C
Use an AWS Lambda function in the source stage to filter the branch.
Why wrong: Adding a Lambda function adds complexity and is not needed because CodePipeline natively supports branch filtering.
- D
Set a branch filter pattern in the pipeline trigger settings.
Why wrong: CodePipeline triggers do not have a branch filter setting; the branch is set in the source action configuration.
Quick Answer
The correct answer is to configure the pipeline's source stage to include the branch name in the CodeCommit action configuration, specifically setting the 'BranchName' parameter to 'main'. This works because AWS CodePipeline natively supports branch filtering at the source stage level for CodeCommit, meaning the pipeline will only trigger when a commit is pushed to that exact branch, without needing additional services like Lambda or CloudWatch Events. On the AWS Certified Developer Associate DVA-C02 exam, this tests your understanding of CodePipeline's built-in source configuration options versus more complex workarounds; a common trap is overcomplicating the solution by adding custom event rules or webhooks when the branch filter is already available in the source action settings. Remember the memory tip: "Branch in the source, not in the course"—the branch name goes directly in the source stage configuration, not in a separate trigger rule.
DVA-C02 Deployment Practice Question
This DVA-C02 practice question tests your understanding of deployment. 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 developer is setting up a CI/CD pipeline using AWS CodePipeline to deploy an application to Amazon ECS. The pipeline has a source stage that pulls code from an AWS CodeCommit repository. The developer wants the pipeline to execute only when commits are pushed to the 'main' branch. How should the developer configure this?
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
Configure the pipeline's source stage to include the branch name in the CodeCommit action configuration.
Option B is correct because AWS CodePipeline allows you to specify a branch name directly in the source action configuration for CodeCommit. When you configure the source stage, you can set the 'BranchName' parameter to 'main', which ensures the pipeline only triggers on commits pushed to that specific branch. This is the simplest and most direct method to filter by branch without additional services or custom logic.
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.
- ✗
Create an Amazon CloudWatch Events rule that triggers the pipeline only when the branch is 'main'.
Why it's wrong here
While this could work, it is more complex than the built-in option. CodePipeline's source action can directly set the branch, making separate rules unnecessary.
- ✓
Configure the pipeline's source stage to include the branch name in the CodeCommit action configuration.
Why this is correct
The CodeCommit source action in CodePipeline allows you to specify the branch name. The pipeline will automatically start on pushes to that branch.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use an AWS Lambda function in the source stage to filter the branch.
Why it's wrong here
Adding a Lambda function adds complexity and is not needed because CodePipeline natively supports branch filtering.
- ✗
Set a branch filter pattern in the pipeline trigger settings.
Why it's wrong here
CodePipeline triggers do not have a branch filter setting; the branch is set in the source action configuration.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates might overthink the solution by considering external services like CloudWatch Events or Lambda, when the correct answer is a simple configuration option already built into the CodePipeline source stage.
Detailed technical explanation
How to think about this question
Under the hood, when you specify a branch name in the CodeCommit action configuration, CodePipeline uses the CodeCommit API to watch for push events on that branch. The pipeline's source stage polls CodeCommit for changes, and only when a commit is made to the specified branch does it start the pipeline execution. In real-world scenarios, this is crucial for multi-branch workflows where you want to deploy only from a stable branch like 'main' while other branches can be used for development without triggering production deployments.
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.
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FAQ
Questions learners often ask
What does this DVA-C02 question test?
Deployment — This question tests Deployment — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Configure the pipeline's source stage to include the branch name in the CodeCommit action configuration. — Option B is correct because AWS CodePipeline allows you to specify a branch name directly in the source action configuration for CodeCommit. When you configure the source stage, you can set the 'BranchName' parameter to 'main', which ensures the pipeline only triggers on commits pushed to that specific branch. This is the simplest and most direct method to filter by branch without additional services or custom logic.
What should I do if I get this DVA-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: Jun 11, 2026
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