The answer is to use Amazon EventBridge to capture CodeCommit events and trigger CodeBuild. This is correct because CodeCommit natively publishes repository events—such as pull request creation or updates—to Amazon EventBridge (formerly CloudWatch Events), which can then invoke a CodeBuild project as a target using a rule. On the AWS Certified Developer Associate DVA-C02 exam, this scenario tests your understanding of event-driven automation within the AWS ecosystem, often appearing as a trap where candidates mistakenly choose webhooks (which are for GitHub/Bitbucket) or over-engineer with CodePipeline. A common memory tip is to remember that CodeCommit speaks directly to EventBridge, not to webhooks or S3. Think of EventBridge as the central nervous system connecting AWS services—when a pull request event fires, CodeBuild listens and acts without needing an orchestrator like CodePipeline.
DVA-C02 Troubleshooting and Optimization Practice Question
This DVA-C02 practice question tests your understanding of troubleshooting and optimization. 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 development team is using AWS CodeCommit as a source repository and CodeBuild for build automation. They want to trigger a build automatically whenever a pull request is created or updated in the repository. Which configuration should they use?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use Amazon EventBridge to capture CodeCommit events and trigger CodeBuild
Option B is correct because CodeCommit can send events via CloudWatch Events (Amazon EventBridge) to trigger CodeBuild. Option A is wrong because webhooks are used with GitHub/Bitbucket, not CodeCommit. Option C is wrong because CodePipeline is a higher-level orchestration service and not necessary for simple build triggers. Option D is wrong because S3 events are not applicable to CodeCommit.
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.
✗
Configure an S3 event notification on the repository
Why it's wrong here
S3 events are not applicable to CodeCommit.
✗
Configure a webhook in CodeCommit to trigger CodeBuild
Why it's wrong here
CodeCommit does not support webhooks; it uses EventBridge events.
✓
Use Amazon EventBridge to capture CodeCommit events and trigger CodeBuild
Why this is correct
EventBridge can detect pull request events from CodeCommit and invoke CodeBuild.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create a CodePipeline that polls CodeCommit for changes
Why it's wrong here
This is an option but not the simplest; also CodePipeline can trigger CodeBuild but adds complexity.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Identify which DVA-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Troubleshooting and Optimization — This question tests Troubleshooting and Optimization — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Amazon EventBridge to capture CodeCommit events and trigger CodeBuild — Option B is correct because CodeCommit can send events via CloudWatch Events (Amazon EventBridge) to trigger CodeBuild. Option A is wrong because webhooks are used with GitHub/Bitbucket, not CodeCommit. Option C is wrong because CodePipeline is a higher-level orchestration service and not necessary for simple build triggers. Option D is wrong because S3 events are not applicable to CodeCommit.
What should I do if I get this DVA-C02 question wrong?
Identify which DVA-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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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.
Question Discussion
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