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 CodePipeline source stage should start when code is pushed to a repository, without scheduled polling. Which integration pattern should be used?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Event-based trigger from the source provider/EventBridge integration
Option B is correct because AWS CodePipeline can integrate with Amazon EventBridge to listen for repository events (e.g., push events from CodeCommit, GitHub, or Bitbucket) and automatically start the pipeline. This event-driven pattern eliminates the need for scheduled polling, providing near-instantaneous execution when code changes are detected.
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.
✗
Manual approval only
Why it's wrong here
This does not meet the stated requirement as directly as the correct option.
✓
Event-based trigger from the source provider/EventBridge integration
Why this is correct
Correct for the stated requirement.
Related concept
Read the scenario before looking for a memorised answer.
✗
A cron job on an EC2 instance
Why it's wrong here
This does not meet the stated requirement as directly as the correct option.
✗
CloudWatch Logs Insights
Why it's wrong here
This does not meet the stated requirement as directly as the correct option.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse manual approval (a pipeline action) with a trigger mechanism, or assume that CloudWatch Logs Insights can initiate pipeline executions, when in fact only EventBridge or webhook-based integrations provide the required event-driven, polling-free source trigger.
Detailed technical explanation
How to think about this question
Under the hood, EventBridge uses a default event bus to capture repository events (e.g., CodeCommit 'ReferenceCreated' or 'ReferenceUpdated' events) and routes them to a CloudWatch Events rule that targets the CodePipeline. This pattern supports multiple source providers via webhooks (e.g., GitHub webhooks) or direct AWS service integrations, ensuring the pipeline starts only when a relevant event occurs, with no polling overhead. A real-world scenario is a CI/CD pipeline for a microservices monorepo where only changes to specific branches trigger the pipeline, which can be filtered using EventBridge event patterns.
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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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: Event-based trigger from the source provider/EventBridge integration — Option B is correct because AWS CodePipeline can integrate with Amazon EventBridge to listen for repository events (e.g., push events from CodeCommit, GitHub, or Bitbucket) and automatically start the pipeline. This event-driven pattern eliminates the need for scheduled polling, providing near-instantaneous execution when code changes are detected.
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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Question Discussion
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