The answer is to view the Events tab in the AWS CloudFormation console. This is the most efficient approach because the Events tab provides a chronological, filterable list of every stack operation, including the specific logical resource ID that failed and the exact error message that triggered the rollback. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this question tests your ability to navigate CloudFormation’s built-in troubleshooting tools rather than relying on external services like CloudTrail or the AWS CLI. A common trap is assuming describe-stack-resources shows failure details, but it only lists resource metadata without error context. Remember the memory tip: “Events tell the story, resources just show the cast.”
DOP-C02 Incident and Event Response Practice Question
This DOP-C02 practice question tests your understanding of incident and event response. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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 CloudFormation to manage infrastructure. After a failed stack update, the stack is in ROLLBACK_COMPLETE state. The DevOps team needs to identify the specific resource that caused the rollback and review the error message. Which approach provides the most efficient way to achieve this?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
View the Events tab in the AWS CloudFormation console.
Option C is correct because the CloudFormation console Events tab lists all stack events, including the failure reason and resource that caused the rollback. Option A is wrong because describe-stack-resources shows resources but not error details. Option B is wrong because describe-stack-events includes the error message. Option D is wrong because CloudTrail logs API calls but does not directly show CloudFormation resource errors in an aggregated view.
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.
✗
Run describe-stack-events and filter by status.
Why it's wrong here
This does show events and errors, but option C is more efficient.
✓
View the Events tab in the AWS CloudFormation console.
Why this is correct
Provides a clear view of all events and errors.
Related concept
Read the scenario before looking for a memorised answer.
✗
Check AWS CloudTrail for the UpdateStack API call.
Why it's wrong here
CloudTrail logs API calls but not detailed resource errors.
✗
Run describe-stack-resources to list all stack resources.
Why it's wrong here
Does not show error messages.
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.
Trap categories for this question
Command / output trap
This does show events and errors, but option C is more efficient.
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 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 DOP-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.
Incident and Event Response — This question tests Incident and Event Response — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: View the Events tab in the AWS CloudFormation console. — Option C is correct because the CloudFormation console Events tab lists all stack events, including the failure reason and resource that caused the rollback. Option A is wrong because describe-stack-resources shows resources but not error details. Option B is wrong because describe-stack-events includes the error message. Option D is wrong because CloudTrail logs API calls but does not directly show CloudFormation resource errors in an aggregated view.
What should I do if I get this DOP-C02 question wrong?
Identify which DOP-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.
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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