- A
Configure a CloudWatch Events rule to start the pipeline on repository changes
CloudWatch Events triggers the pipeline on push events.
- B
Add a webhook in CodeCommit to directly invoke CodePipeline
Why wrong: CodeCommit does not support webhooks; use CloudWatch Events.
- C
Set up a scheduled pipeline that polls CodeCommit every minute
Why wrong: Polls are inefficient; CloudWatch Events is event-driven.
- D
Use an S3 trigger to start the pipeline when code is uploaded
Why wrong: CodeCommit uses Git, not S3.
Question 265 of 1,616
How to Automatically Trigger CodePipeline When Code Is Pushed to CodeCommit
This DVA-C02 practice question tests your understanding of development with aws services. 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 and wants to automatically trigger a build in AWS CodePipeline when code is pushed to the master branch. Which action should be taken?
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
✓
Configure a CloudWatch Events rule to start the pipeline on repository changes
AWS CodePipeline can be configured to automatically start when changes are pushed to a CodeCommit repository by using an Amazon CloudWatch Events rule. The rule listens for CodeCommit repository state changes (e.g., 'ReferenceCreated' or 'ReferenceUpdated' events on the master branch) and targets the pipeline as a CloudWatch Events target, triggering the pipeline execution without polling or manual intervention.
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 a CloudWatch Events rule to start the pipeline on repository changes
Why this is correct
CloudWatch Events triggers the pipeline on push events.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Add a webhook in CodeCommit to directly invoke CodePipeline
Why it's wrong here
CodeCommit does not support webhooks; use CloudWatch Events.
- ✗
Set up a scheduled pipeline that polls CodeCommit every minute
Why it's wrong here
Polls are inefficient; CloudWatch Events is event-driven.
- ✗
Use an S3 trigger to start the pipeline when code is uploaded
Why it's wrong here
CodeCommit uses Git, not S3.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse CodeCommit's integration with webhooks (which work with external Git providers) and assume CodeCommit supports them natively, or they overcomplicate the solution by suggesting polling or S3 triggers instead of using the native CloudWatch Events integration.
Detailed technical explanation
How to think about this question
Under the hood, CloudWatch Events (now part of Amazon EventBridge) captures CodeCommit API calls via CloudTrail, specifically the 'GitPush' event for branch updates. The rule filters on the 'referenceType' as 'branch' and 'referenceName' as 'master', then sends the event to CodePipeline as a target, which starts the pipeline execution. A subtle behavior is that the rule must be in the same region as the CodeCommit repository and the pipeline, and the IAM role associated with the rule must have permissions to invoke the pipeline.
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 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.
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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: Configure a CloudWatch Events rule to start the pipeline on repository changes — AWS CodePipeline can be configured to automatically start when changes are pushed to a CodeCommit repository by using an Amazon CloudWatch Events rule. The rule listens for CodeCommit repository state changes (e.g., 'ReferenceCreated' or 'ReferenceUpdated' events on the master branch) and targets the pipeline as a CloudWatch Events target, triggering the pipeline execution without polling or manual intervention.
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
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.
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