- A
Include a buildspec file in the repository that defines the unit test commands.
The buildspec file tells CodeBuild how to run the tests.
- B
Configure a CodePipeline stage that uses the pull request source action.
Why wrong: CodePipeline does not have a native source action for pull requests.
- C
Set up an Amazon CloudWatch Events rule to detect pull request creation and invoke an AWS Lambda function that starts CodeBuild.
Why wrong: This is possible but not the most direct; CodeBuild webhooks are simpler.
- D
Add a CodeDeploy deployment group to run the tests on an EC2 instance.
Why wrong: CodeDeploy is for deployment, not running tests.
- E
Create an AWS CodeBuild project with a webhook trigger that listens to pull request events from CodeCommit.
CodeBuild webhooks can be configured to respond to pull request events.
Implementing PR-Triggered Unit Tests Using CodeBuild Webhook
This DOP-C02 practice question tests your understanding of sdlc automation. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 designing a CI/CD pipeline using AWS CodePipeline. They want to automatically run unit tests when a pull request is created in AWS CodeCommit. Which TWO actions should be taken to implement 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
Include a buildspec file in the repository that defines the unit test commands.
Option A is correct because a buildspec file in the repository defines the unit test commands that CodeBuild will execute. When a webhook triggers CodeBuild on pull request creation, CodeBuild reads the buildspec from the source code, allowing the tests to run automatically as part of the CI/CD pipeline.
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.
- ✓
Include a buildspec file in the repository that defines the unit test commands.
Why this is correct
The buildspec file tells CodeBuild how to run the tests.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Configure a CodePipeline stage that uses the pull request source action.
Why it's wrong here
CodePipeline does not have a native source action for pull requests.
- ✗
Set up an Amazon CloudWatch Events rule to detect pull request creation and invoke an AWS Lambda function that starts CodeBuild.
Why it's wrong here
This is possible but not the most direct; CodeBuild webhooks are simpler.
- ✗
Add a CodeDeploy deployment group to run the tests on an EC2 instance.
Why it's wrong here
CodeDeploy is for deployment, not running tests.
- ✓
Create an AWS CodeBuild project with a webhook trigger that listens to pull request events from CodeCommit.
Why this is correct
CodeBuild webhooks can be configured to respond to pull request events.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may think CodePipeline's source stage can directly use pull request events, but CodePipeline only supports branch or tag triggers, not pull request-specific actions, making the webhook-based CodeBuild approach the correct one.
Detailed technical explanation
How to think about this question
CodeBuild webhooks use the GitHub or CodeCommit API to listen for specific events (e.g., PULL_REQUEST_CREATED, PULL_REQUEST_UPDATED). When a webhook is configured, CodeBuild automatically validates the event payload against the repository's branch filter and triggers a build with the pull request source code, including the buildspec.yml. This approach avoids polling and provides near-real-time feedback to developers.
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: Include a buildspec file in the repository that defines the unit test commands. — Option A is correct because a buildspec file in the repository defines the unit test commands that CodeBuild will execute. When a webhook triggers CodeBuild on pull request creation, CodeBuild reads the buildspec from the source code, allowing the tests to run automatically as part of the CI/CD pipeline.
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.