- A
Amazon CloudWatch Events
CloudWatch Events can capture CodeCommit repository events.
- B
Amazon S3 event notification
Why wrong: S3 events are for S3 buckets, not CodeCommit.
- C
Amazon Simple Notification Service (SNS)
Why wrong: SNS is a notification service, not a trigger for CodePipeline.
- D
AWS Lambda
Why wrong: Lambda can be invoked, but the event source is typically CloudWatch Events.
Question 440 of 1,616
Automatically Start Pipeline When a New Branch is Created in CodeCommit
This DVA-C02 practice question tests your understanding of deployment. 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 CodeCommit as a source repository. They want to automatically build and test code whenever a new branch is created. Which AWS service should they use to trigger 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
✓
Amazon CloudWatch Events
Amazon CloudWatch Events (now part of Amazon EventBridge) can capture AWS CodeCommit repository events, such as the creation of a new branch. By setting a rule that matches the 'Reference Created' event type, you can automatically trigger an AWS CodePipeline pipeline execution, enabling continuous integration for new branches.
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 Events
Why this is correct
CloudWatch Events can capture CodeCommit repository events.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Amazon S3 event notification
Why it's wrong here
S3 events are for S3 buckets, not CodeCommit.
- ✗
Amazon Simple Notification Service (SNS)
Why it's wrong here
SNS is a notification service, not a trigger for CodePipeline.
- ✗
AWS Lambda
Why it's wrong here
Lambda can be invoked, but the event source is typically CloudWatch Events.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse the service that emits the event (CodeCommit) with the service that routes the event to the pipeline (CloudWatch Events/EventBridge), leading them to incorrectly select Lambda or SNS as the trigger mechanism.
Detailed technical explanation
How to think about this question
Under the hood, CodeCommit emits events to CloudWatch Events (EventBridge) for actions like 'Reference Created', 'Reference Deleted', and 'Push to Branch'. The event payload includes details such as the repository name, reference type (branch/tag), and commit ID. When you configure a CloudWatch Events rule with CodePipeline as the target, EventBridge automatically formats the event and passes it to the pipeline's source action, which can then start a new execution. A subtle behavior is that the pipeline must have a source action configured with 'Amazon CloudWatch Events' as the change detection method; otherwise, the event will not trigger 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?
Deployment — This question tests Deployment — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Amazon CloudWatch Events — Amazon CloudWatch Events (now part of Amazon EventBridge) can capture AWS CodeCommit repository events, such as the creation of a new branch. By setting a rule that matches the 'Reference Created' event type, you can automatically trigger an AWS CodePipeline pipeline execution, enabling continuous integration for new branches.
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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