- A
Delete the stack and recreate it with the same template.
Why wrong: Deleting the stack and recreating it is not recommended as it removes all resources and may cause data loss or downtime. Rolling back is a safer approach.
- B
Roll back the stack update to the previous working state.
Rolling back restores the last successful state.
- C
Continue the update by skipping the failed resource.
Why wrong: Skipping the failed resource is not supported in CloudFormation; the stack update cannot continue if a resource fails. The correct action is to roll back.
- D
Create a new stack and migrate resources.
Why wrong: Migration is complex and unnecessary.
Question 530 of 1,746
Rolling Back a Failed CloudFormation Stack Update
This SAP-C02 practice question tests your understanding of continuous improvement for existing solutions. 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 uses AWS CloudFormation to deploy infrastructure. A recent deployment failed with a stack update error. The error message indicates that a resource was being updated but was in a failed state. What should the engineer do to resolve this issue?
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
✓
Roll back the stack update to the previous working state.
Option B is correct because rolling back the stack update returns the stack to its last known stable state, which is the recommended approach when a resource update fails. Option A is incorrect because deleting the stack removes all resources and recreating from scratch is unnecessary and causes downtime. Option C is incorrect because CloudFormation does not support skipping a failed resource during an update; you must roll back to resolve the failure. Option D is incorrect because creating a new stack and migrating resources is complex, risky, and not aligned with CloudFormation's built-in rollback capability.
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.
- ✗
Delete the stack and recreate it with the same template.
Why it's wrong here
Deleting the stack and recreating it is not recommended as it removes all resources and may cause data loss or downtime. Rolling back is a safer approach.
- ✓
Roll back the stack update to the previous working state.
Why this is correct
Rolling back restores the last successful state.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Continue the update by skipping the failed resource.
Why it's wrong here
Skipping the failed resource is not supported in CloudFormation; the stack update cannot continue if a resource fails. The correct action is to roll back.
- ✗
Create a new stack and migrate resources.
Why it's wrong here
Migration is complex and unnecessary.
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 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.
Visual reference
What to study next
Got this wrong? Here's your next step.
Identify which SAP-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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Continuous Improvement for Existing Solutions — study guide chapter
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FAQ
Questions learners often ask
What does this SAP-C02 question test?
Continuous Improvement for Existing Solutions — This question tests Continuous Improvement for Existing Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Roll back the stack update to the previous working state. — Option B is correct because rolling back the stack update returns the stack to its last known stable state, which is the recommended approach when a resource update fails. Option A is incorrect because deleting the stack removes all resources and recreating from scratch is unnecessary and causes downtime. Option C is incorrect because CloudFormation does not support skipping a failed resource during an update; you must roll back to resolve the failure. Option D is incorrect because creating a new stack and migrating resources is complex, risky, and not aligned with CloudFormation's built-in rollback capability.
What should I do if I get this SAP-C02 question wrong?
Identify which SAP-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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Last reviewed: Jun 20, 2026
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