Question 91 of 1,750
SDLC AutomationeasyMultiple SelectObjective-mapped

Triggering CodeBuild Only When Changes Affect Specific Folder

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 CodeCommit for source control. Developers need to automatically run tests on every push to a feature branch, but only if the push includes changes to the 'src/' directory. Which TWO AWS services can be used together to achieve 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

AWS CodePipeline

AWS CodePipeline can be configured to trigger a pipeline execution when a push occurs to a specific branch in CodeCommit, and it supports path-based filtering using the 'PathFilter' condition in the source action. By combining CodePipeline with AWS Lambda, you can run custom validation logic (e.g., checking if changes are within the 'src/' directory) before invoking further actions like tests. This pair allows you to conditionally run tests only when the push includes changes to 'src/'.

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.

  • Amazon CloudWatch Logs

    Why it's wrong here

    CloudWatch Logs is for log storage and monitoring

  • AWS CodePipeline

    Why this is correct

    CodePipeline can start on CodeCommit push with path filters

    Related concept

    Read the scenario before looking for a memorised answer.

  • AWS CodeDeploy

    Why it's wrong here

    CodeDeploy is for deployment, not triggering tests

  • AWS Lambda

    Why this is correct

    Lambda can respond to CodeCommit events and trigger CodeBuild

    Related concept

    Read the scenario before looking for a memorised answer.

  • AWS CodeBuild

    Why it's wrong here

    CodeBuild cannot directly listen to CodeCommit events

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often assume AWS CodeBuild alone can handle event-driven triggers with path filtering, but it requires an orchestrator like CodePipeline or a Lambda-based custom trigger to implement conditional execution based on directory changes.

Detailed technical explanation

How to think about this question

Under the hood, CodePipeline uses CloudWatch Events to detect CodeCommit pushes and can apply a 'PathFilter' in the source action's configuration, which uses glob patterns (e.g., 'src/**') to decide whether to start the pipeline. Lambda functions can be integrated as a custom action in CodePipeline to perform additional checks, such as verifying that only the 'src/' directory was modified, using the Git diff between the commit and the previous one. This approach avoids unnecessary build executions, saving costs and reducing pipeline latency in high-frequency development workflows.

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.

Quick reference

Cloud Service Model Comparison

ModelYou ManageProvider ManagesExamples
IaaSOS, runtime, apps, dataHardware, hypervisor, networkingEC2, Azure VMs, GCP Compute Engine
PaaSApps and dataOS, runtime, middleware, hardwareElastic Beanstalk, Azure App Service
SaaSData and settings onlyEverything elseMicrosoft 365, Salesforce, Workday
FaaS / ServerlessFunction code onlyInfra, scaling, runtimeLambda, Azure Functions, Cloud Run
CaaSContainers and appsKubernetes, OS, hardwareEKS, AKS, GKE

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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: AWS CodePipeline — AWS CodePipeline can be configured to trigger a pipeline execution when a push occurs to a specific branch in CodeCommit, and it supports path-based filtering using the 'PathFilter' condition in the source action. By combining CodePipeline with AWS Lambda, you can run custom validation logic (e.g., checking if changes are within the 'src/' directory) before invoking further actions like tests. This pair allows you to conditionally run tests only when the push includes changes to 'src/'.

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.

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Last reviewed: Jul 4, 2026

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