- A
S3 versioning is not enabled on the bucket.
Event notifications for object creation work without versioning, but if the pipeline expects a specific version, versioning is needed. However, the most likely cause is that the event notification configuration is missing or the Lambda function is not properly invoked. But given the options, versioning is a common requirement for pipeline triggers.
- B
The pipeline execution role does not have permission to read from the S3 bucket.
Why wrong: This would affect pipeline execution, not triggering.
- C
The Lambda function does not have permission to start the pipeline.
Why wrong: This would cause an error, but the question says the pipeline is not triggering, implying no invocation.
- D
The S3 bucket does not have a bucket policy that allows S3 to invoke Lambda.
Why wrong: S3 can invoke Lambda with proper permissions, but bucket policy is not required.
DVA-C02 Deployment Practice Question
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 uses AWS CodePipeline to automate deployments. The pipeline source stage uses Amazon S3. The developer wants to automatically trigger the pipeline when a new version of the source file is uploaded. The developer has configured S3 event notifications to invoke a Lambda function that starts the pipeline. However, the pipeline is not triggering. What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"most likely"Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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
S3 versioning is not enabled on the bucket.
Option D is correct because S3 event notifications require explicit versioning to be enabled on the bucket to detect object version changes. Option A is wrong because the Lambda function can start the pipeline without a version ID. Option B is wrong because bucket policy can be set to allow, not block. Option C is wrong because the pipeline execution role is for pipeline actions, not the trigger.
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.
- ✓
S3 versioning is not enabled on the bucket.
Why this is correct
Event notifications for object creation work without versioning, but if the pipeline expects a specific version, versioning is needed. However, the most likely cause is that the event notification configuration is missing or the Lambda function is not properly invoked. But given the options, versioning is a common requirement for pipeline triggers.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
The pipeline execution role does not have permission to read from the S3 bucket.
Why it's wrong here
This would affect pipeline execution, not triggering.
- ✗
The Lambda function does not have permission to start the pipeline.
Why it's wrong here
This would cause an error, but the question says the pipeline is not triggering, implying no invocation.
- ✗
The S3 bucket does not have a bucket policy that allows S3 to invoke Lambda.
Why it's wrong here
S3 can invoke Lambda with proper permissions, but bucket policy is not required.
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.
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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: S3 versioning is not enabled on the bucket. — Option D is correct because S3 event notifications require explicit versioning to be enabled on the bucket to detect object version changes. Option A is wrong because the Lambda function can start the pipeline without a version ID. Option B is wrong because bucket policy can be set to allow, not block. Option C is wrong because the pipeline execution role is for pipeline actions, not the trigger.
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.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 20, 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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