This DOP-C02 practice question tests your understanding of sdlc automation. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 DevOps engineer is reviewing the CodePipeline structure above. The pipeline fails during the Deploy stage with an error: 'The deployment group could not be found.' 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 the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The pipeline is configured as a single-region pipeline, but the Deploy action is in a different region.
The error 'The deployment group could not be found' indicates that CodePipeline is attempting to invoke a CodeDeploy deployment in a region where the specified deployment group does not exist. If the pipeline is configured as a single-region pipeline (e.g., in us-east-1) but the Deploy action references a deployment group in a different region (e.g., us-west-2), CodePipeline will fail because it cannot resolve the deployment group across regions in a single-region pipeline configuration. Cross-region actions require explicit cross-region action configuration in the pipeline structure.
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.
✓
The pipeline is configured as a single-region pipeline, but the Deploy action is in a different region.
Why this is correct
Cross-region actions require explicit configuration; the pipeline is in us-east-1 and cannot deploy to us-west-2 without cross-region setup.
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 source artifact is not accessible from us-west-2.
Why it's wrong here
Artifact accessibility is not the error; the error is about deployment group not found.
✗
The CodeDeploy application does not exist in us-west-2.
Why it's wrong here
The error indicates deployment group not found, but the region mismatch is the root cause.
✗
The CodeBuild project is not configured to output artifacts.
Why it's wrong here
Missing artifacts would cause a different error.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse the error message 'deployment group could not be found' with the deployment group not existing at all (Option C), rather than recognizing it as a region mismatch issue where the deployment group exists but in a different region than the pipeline.
Detailed technical explanation
How to think about this question
CodePipeline supports cross-region actions by explicitly configuring the region in the action declaration, which creates a separate pipeline execution role and artifact bucket in the target region. Without this explicit configuration, the pipeline operates as a single-region pipeline and all actions must reference resources in the same region as the pipeline itself. The deployment group is a resource within a CodeDeploy application, and its ARN includes the region, so a mismatch between the pipeline's region and the deployment group's region causes the 'not found' error because the pipeline's service role lacks permissions or the resource simply doesn't exist in the pipeline's region.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Visual reference
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.
SDLC Automation — This question tests SDLC Automation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The pipeline is configured as a single-region pipeline, but the Deploy action is in a different region. — The error 'The deployment group could not be found' indicates that CodePipeline is attempting to invoke a CodeDeploy deployment in a region where the specified deployment group does not exist. If the pipeline is configured as a single-region pipeline (e.g., in us-east-1) but the Deploy action references a deployment group in a different region (e.g., us-west-2), CodePipeline will fail because it cannot resolve the deployment group across regions in a single-region pipeline configuration. Cross-region actions require explicit cross-region action configuration in the pipeline structure.
What should I do if I get this DOP-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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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Question Discussion
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