- A
Use a Lambda function as a source action instead of GitHub.
Why wrong: Unnecessary; the GitHub action can filter.
- B
Create a GitHub webhook manually and point it to a Lambda function that starts the pipeline only for main branch pushes.
Why wrong: Overly complex; CodePipeline supports filtering natively.
- C
Configure the source action's 'Branch' field to 'main' and set 'PollForSourceChanges' to false, and use a webhook with filters.
This ensures only push events to main trigger the pipeline.
- D
Add a condition in the pipeline's first stage to check the branch name.
Why wrong: The pipeline would still start; conditions don't prevent triggering.
Question 1,109 of 1,750
Configuring GitHub Webhook Branch Filters for CodePipeline
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 CodePipeline with a GitHub source action. They want to automatically start the pipeline when a pull request is merged to the main branch. However, the pipeline also starts on every push to any branch. How can they limit the pipeline to only trigger on push events to the main branch?
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 source action's 'Branch' field to 'main' and set 'PollForSourceChanges' to false, and use a webhook with filters.
Option C is correct because it configures the source action to only respond to push events on the main branch by setting the 'Branch' field to 'main' and disabling polling ('PollForSourceChanges': false), while using a webhook with branch filters. This ensures that only pushes to the main branch trigger the pipeline, not pushes to any other 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.
- ✗
Use a Lambda function as a source action instead of GitHub.
Why it's wrong here
Unnecessary; the GitHub action can filter.
- ✗
Create a GitHub webhook manually and point it to a Lambda function that starts the pipeline only for main branch pushes.
Why it's wrong here
Overly complex; CodePipeline supports filtering natively.
- ✓
Configure the source action's 'Branch' field to 'main' and set 'PollForSourceChanges' to false, and use a webhook with filters.
Why this is correct
This ensures only push events to main trigger the pipeline.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Add a condition in the pipeline's first stage to check the branch name.
Why it's wrong here
The pipeline would still start; conditions don't prevent triggering.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often think branch filtering must be done inside the pipeline stages (Option D) or via a custom Lambda (Options A and B), overlooking CodePipeline's native webhook branch filter configuration that prevents the pipeline from even starting on non-matching branches.
Detailed technical explanation
How to think about this question
Under the hood, CodePipeline uses a webhook created in GitHub that sends push event payloads to CodePipeline's API. When 'PollForSourceChanges' is false and a webhook is configured, CodePipeline evaluates the event payload against the specified branch filter (e.g., 'refs/heads/main') before starting the pipeline. This avoids unnecessary pipeline executions and reduces API costs, especially in repositories with high push frequency.
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.
- →
SDLC Automation — study guide chapter
Learn the concepts, then practise the questions
- →
SDLC Automation practice questions
Targeted practice on this topic area only
- →
All DOP-C02 questions
1,750 questions across all exam domains
- →
AWS Certified DevOps Engineer Professional DOP-C02 study guide
Full concept coverage aligned to exam objectives
- →
DOP-C02 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related DOP-C02 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Configuration Management and IaC practice questions
Practise DOP-C02 questions linked to Configuration Management and IaC.
Resilient Cloud Solutions practice questions
Practise DOP-C02 questions linked to Resilient Cloud Solutions.
Monitoring and Logging practice questions
Practise DOP-C02 questions linked to Monitoring and Logging.
Incident and Event Response practice questions
Practise DOP-C02 questions linked to Incident and Event Response.
Security and Compliance practice questions
Practise DOP-C02 questions linked to Security and Compliance.
SDLC Automation practice questions
Practise DOP-C02 questions linked to SDLC Automation.
DOP-C02 fundamentals practice questions
Practise DOP-C02 questions linked to DOP-C02 fundamentals.
DOP-C02 scenario practice questions
Practise DOP-C02 questions linked to DOP-C02 scenario.
DOP-C02 troubleshooting practice questions
Practise DOP-C02 questions linked to DOP-C02 troubleshooting.
Practice this exam
Start a free DOP-C02 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
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: Configure the source action's 'Branch' field to 'main' and set 'PollForSourceChanges' to false, and use a webhook with filters. — Option C is correct because it configures the source action to only respond to push events on the main branch by setting the 'Branch' field to 'main' and disabling polling ('PollForSourceChanges': false), while using a webhook with branch filters. This ensures that only pushes to the main branch trigger the pipeline, not pushes to any other 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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Keep practising
More DOP-C02 practice questions
- A company uses AWS CodePipeline with a multi-branch strategy. A new feature branch triggers a pipeline that runs unit te…
- A development team uses AWS CodeBuild to compile a Java application and run unit tests. The build takes 30 minutes, but…
- A company uses AWS CodePipeline with multiple stages: Source (Amazon S3), Build (AWS CodeBuild), and Deploy (AWS CodeDep…
- A company uses AWS CodeCommit for source control. Developers frequently push large binary files (e.g., compiled JARs) to…
- A company runs a Stateful application on EC2 that requires sticky sessions. They use an ALB with duration-based stickine…
- An organization uses AWS CodePipeline to orchestrate deployments to multiple environments (dev, test, prod). Each enviro…
Last reviewed: Jul 4, 2026
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
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.