This DVA-C02 practice question tests your understanding of deployment. 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 is using AWS CodeCommit as a source repository for a CI/CD pipeline. The developer has set up AWS CodePipeline with a source stage that uses CodeCommit. The pipeline triggers automatically on changes to the repository. The developer wants to ensure that only changes to the 'main' branch trigger the pipeline. Which THREE configurations should the developer set in the CodePipeline source stage? (Choose THREE.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Disable 'Poll for source changes'.
Option B is correct because disabling 'Poll for source changes' is necessary when using event-based change detection (CloudWatch Events) to trigger the pipeline. When you set 'Change detection' to 'Amazon CloudWatch Events' (option C), you must disable polling to avoid duplicate triggers and ensure the pipeline only responds to CloudWatch Events triggered by commits to the specified branch. This configuration ensures that only changes to the 'main' branch (set in option E) initiate the pipeline.
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.
✗
Set 'Output artifact format' to 'CodeCommit'.
Why it's wrong here
Output artifact format is not related to branch filtering.
✓
Disable 'Poll for source changes'.
Why this is correct
When using CloudWatch Events, polling should be disabled to avoid duplicate triggers.
Related concept
Read the scenario before looking for a memorised answer.
✓
Set 'Change detection' to 'Amazon CloudWatch Events'.
Why this is correct
Enables event-based triggering on code changes.
Related concept
Read the scenario before looking for a memorised answer.
✗
Set 'Repository name' to 'main'.
Why it's wrong here
Repository name is the name of the repository, not the branch.
✓
Set the 'Branch name' to 'main'.
Why this is correct
Specifies which branch to monitor for changes.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates mistakenly think 'Repository name' can be used to specify the branch, or that 'Output artifact format' influences trigger behavior, when in fact only the 'Branch name' field and the combination of CloudWatch Events with polling disabled enforce branch-specific triggering.
Trap categories for this question
Command / output trap
Output artifact format is not related to branch filtering.
Detailed technical explanation
How to think about this question
Under the hood, CodePipeline's source stage uses Amazon CloudWatch Events to capture repository events like 'ReferenceCreated' or 'ReferenceUpdated' for the specified branch. The event rule filters on the branch name pattern, so only pushes to 'main' generate the event that starts the pipeline. Disabling polling ensures the pipeline does not also use periodic S3-based polling (which would ignore branch filters), thus avoiding redundant executions and ensuring strict branch-based triggering.
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.
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: Disable 'Poll for source changes'. — Option B is correct because disabling 'Poll for source changes' is necessary when using event-based change detection (CloudWatch Events) to trigger the pipeline. When you set 'Change detection' to 'Amazon CloudWatch Events' (option C), you must disable polling to avoid duplicate triggers and ensure the pipeline only responds to CloudWatch Events triggered by commits to the specified branch. This configuration ensures that only changes to the 'main' branch (set in option E) initiate the pipeline.
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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