Question 917 of 1,616
Development with AWS ServiceseasyMultiple ChoiceObjective-mapped

Run Unit Tests in CodePipeline with CodeBuild

This DVA-C02 practice question tests your understanding of development with aws services. 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 developer is using AWS CodePipeline to automate the deployment of a web application. The developer wants to run unit tests after the source stage and before deploying to a staging environment. Which action should the developer add to the pipeline?

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

AWS CodeBuild

AWS CodeBuild is the correct service to run unit tests in a CodePipeline because it provides a fully managed build environment that can execute test commands defined in a buildspec file. By adding a CodeBuild action to the pipeline after the source stage, the developer can run unit tests and fail the pipeline if tests do not pass, ensuring only validated code proceeds to the staging deployment.

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.

  • AWS CodeBuild

    Why this is correct

    CodeBuild can run tests as part of the build.

    Related concept

    Read the scenario before looking for a memorised answer.

  • AWS CodeCommit

    Why it's wrong here

    CodeCommit is a source control service.

  • AWS CloudFormation

    Why it's wrong here

    CloudFormation provisions resources.

  • AWS CodeDeploy

    Why it's wrong here

    CodeDeploy is for deployment, not testing.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates may confuse CodeDeploy as the service for running tests because it handles deployments, but CodeDeploy does not execute build or test commands; it only deploys pre-built artifacts.

Detailed technical explanation

How to think about this question

Under the hood, CodeBuild runs in an isolated Docker container where the buildspec.yaml file defines phases such as 'pre_build', 'build', and 'post_build'. The 'build' phase can include test commands like 'npm test' or 'mvn test', and if any command exits with a non-zero status, the build fails and the pipeline transitions to a failed state. This allows developers to enforce quality gates before deployment, and CodePipeline can be configured to automatically retry or notify on failure.

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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FAQ

Questions learners often ask

What does this DVA-C02 question test?

Development with AWS Services — This question tests Development with AWS Services — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: AWS CodeBuild — AWS CodeBuild is the correct service to run unit tests in a CodePipeline because it provides a fully managed build environment that can execute test commands defined in a buildspec file. By adding a CodeBuild action to the pipeline after the source stage, the developer can run unit tests and fail the pipeline if tests do not pass, ensuring only validated code proceeds to the staging deployment.

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: Jul 4, 2026

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This DVA-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 DVA-C02 exam.