- 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.
DOP-C02 SDLC Automation Practice Question
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 CodeBuild can be triggered by pull request events. Option D is correct because the buildspec file defines the commands to run tests. Option B is wrong because CodePipeline does not natively support pull request triggers from CodeCommit. Option C is wrong because CloudWatch Events can trigger Lambda, but the direct integration with CodeBuild is simpler. Option E is wrong because CodeDeploy is for deployment, not testing.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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
Static NAT maps one inside address to one outside address.
- ✗
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
Static NAT maps one inside address to one outside address.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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. NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated. 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.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DOP-C02 NAT questions on configuration and troubleshooting.
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FAQ
Questions learners often ask
What does this DOP-C02 question test?
SDLC Automation — This question tests SDLC Automation — Static NAT maps one inside address to one outside address..
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 CodeBuild can be triggered by pull request events. Option D is correct because the buildspec file defines the commands to run tests. Option B is wrong because CodePipeline does not natively support pull request triggers from CodeCommit. Option C is wrong because CloudWatch Events can trigger Lambda, but the direct integration with CodeBuild is simpler. Option E is wrong because CodeDeploy is for deployment, not testing.
What should I do if I get this DOP-C02 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DOP-C02 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 20, 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.
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