The answer is to use the ContinueUpdateRollback operation to skip the resources that failed. This is correct because when a CloudFormation stack enters the UPDATE_ROLLBACK_FAILED state, the rollback process itself has encountered an error—in this case, insufficient capacity in the Availability Zone for the Auto Scaling group. The ContinueUpdateRollback API allows you to resume the rollback while skipping the specific resource that is blocking progress, effectively moving the stack out of its stuck state without requiring a full stack deletion. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this scenario tests your understanding of stack failure recovery workflows and the distinction between fixing the underlying issue versus recovering the stack’s operational state. A common trap is assuming you must resolve the capacity problem first or manually fix the resource, but the recommended step is to continue the rollback and address the capacity issue afterward. Memory tip: think “Skip to roll back”—you skip the failed resource to let the rollback finish.
DOP-C02 Configuration Management and IaC Practice Question
This DOP-C02 practice question tests your understanding of configuration management and iac. 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 troubleshooting a CloudFormation stack that is in UPDATE_ROLLBACK_FAILED state. The stack attempted to update an Auto Scaling group but failed due to insufficient capacity in the Availability Zone. What is the recommended next step?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use the ContinueUpdateRollback operation to skip the resources that failed
When a stack is in UPDATE_ROLLBACK_FAILED, you can continue the rollback by using the 'ContinueUpdateRollback' API or by deleting the stack. Option D is correct. Option A is incorrect because continuing the rollback will not fix the underlying capacity issue. Option B is incorrect because you cannot update the stack while it is in a failed rollback state. Option C is incorrect because you should not manually fix the resource while the stack is in this state.
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.
✗
Execute a new stack update with the same template
Why it's wrong here
The stack must first be moved out of UPDATE_ROLLBACK_FAILED state.
✗
Manually increase the Auto Scaling group capacity in the affected AZ
Why it's wrong here
This might not resolve the rollback state; the stack is still in a failed state.
✓
Use the ContinueUpdateRollback operation to skip the resources that failed
Why this is correct
This allows you to resume the rollback and skip the resources that caused the failure.
Related concept
Read the scenario before looking for a memorised answer.
✗
Delete the Auto Scaling group and recreate it
Why it's wrong here
This is not a best practice and may cause data loss.
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
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
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.
Configuration Management and IaC — This question tests Configuration Management and IaC — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use the ContinueUpdateRollback operation to skip the resources that failed — When a stack is in UPDATE_ROLLBACK_FAILED, you can continue the rollback by using the 'ContinueUpdateRollback' API or by deleting the stack. Option D is correct. Option A is incorrect because continuing the rollback will not fix the underlying capacity issue. Option B is incorrect because you cannot update the stack while it is in a failed rollback state. Option C is incorrect because you should not manually fix the resource while the stack is in this state.
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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This DOP-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 DOP-C02 exam.
Question Discussion
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