The answer is to run the AWS CLI command aws cloudformation describe-stack-events --stack-name <stack-name> and review the resource status reason. This is the most efficient method because the command retrieves stack events in reverse chronological order, and each event for a resource includes a status reason field that explicitly states why the resource failed, such as an IAM permission issue or a dependency violation. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this scenario tests your ability to troubleshoot CloudFormation update failures efficiently without unnecessary steps; a common trap is to check the overall stack status or use the AWS Management Console’s stack view, which lacks the granular event details. Remember that describe-stack-events is your go-to for pinpointing the exact resource that caused the rollback, while commands like describe-stacks only show the top-level status. A helpful memory tip: "Events explain the failure, status just shows the failure."
SOA-C02 Deployment, Provisioning, and Automation Practice Question
This SOA-C02 practice question tests your understanding of deployment, provisioning, and 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 company is using AWS CloudFormation to deploy a multi-tier web application. After updating the stack template, the update fails with a stack creation rollback in progress error. The SysOps administrator needs to identify the specific resource that caused the failure. What is the MOST efficient way to accomplish this?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Run the AWS CLI command aws cloudformation describe-stack-events --stack-name <stack-name> and review the resource status reason.
Option B is correct because the describe-stack-events command lists stack events in reverse chronological order, showing the specific resource failure reason. Option A is incorrect because it only shows the overall status not details. Option C is incorrect because viewing the stack will not show event details. Option D is incorrect because the change set was not used for the update.
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.
✗
Use the AWS Management Console to view the stack status and check the stack policy.
Why it's wrong here
Viewing stack status gives only overall status, not per-resource failure details.
✗
Use the aws cloudformation describe-change-set command to review the proposed changes.
Why it's wrong here
Change set shows intended changes but not failure reasons during update.
✗
Check the CloudTrail logs for the UpdateStack API call to see the error message.
Why it's wrong here
CloudTrail logs show API calls but not detailed resource-level failure reasons from CloudFormation.
✓
Run the AWS CLI command aws cloudformation describe-stack-events --stack-name <stack-name> and review the resource status reason.
Why this is correct
This command returns all events with failure reasons for each resource.
Related concept
Read the scenario before looking for a memorised answer.
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
Change set shows intended changes but not failure reasons during update.
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 SOA-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.
Deployment, Provisioning, and Automation — This question tests Deployment, Provisioning, and Automation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Run the AWS CLI command aws cloudformation describe-stack-events --stack-name <stack-name> and review the resource status reason. — Option B is correct because the describe-stack-events command lists stack events in reverse chronological order, showing the specific resource failure reason. Option A is incorrect because it only shows the overall status not details. Option C is incorrect because viewing the stack will not show event details. Option D is incorrect because the change set was not used for the update.
What should I do if I get this SOA-C02 question wrong?
Identify which SOA-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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