The correct answer is to wait for the rollback to complete and then investigate the failure reason. When a CloudFormation stack update fails and enters the UPDATE_ROLLBACK_IN_PROGRESS state, the service automatically attempts to revert the stack to its last known stable configuration, so the appropriate recovery strategy is simply to let this process finish without manual intervention. This scenario tests your understanding of CloudFormation’s built-in rollback mechanism, a key concept for the AWS Certified SysOps Administrator Associate SOA-C02 exam, where common traps include prematurely deleting the stack or trying to resume the failed update. Remember that CloudFormation handles state recovery autonomously during a rollback, and any attempt to apply a change set or continue the update while the stack is unstable will fail. Memory tip: think “RIP” for Rollback In Progress — just wait and inspect, don’t delete or intervene.
SOA-C02 Deployment, Provisioning, and Automation Practice Question
This SOA-C02 practice question tests your understanding of deployment, provisioning, and automation. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Network Topology
A SysOps Administrator attempted to update a CloudFormation stack. The stack update failed and is now in UPDATE_ROLLBACK_IN_PROGRESS state as shown in the exhibit. What should the administrator do to recover the stack to a stable state?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Wait for the rollback to complete and then investigate the failure reason.
Option D is correct. Since the stack is in rollback, waiting for the rollback to complete is the appropriate action. The stack will attempt to roll back to the previous state. Option A is wrong because deleting the stack is not necessary; the rollback will restore the previous state. Option B is wrong because continuing the update would fail. Option C is wrong because executing a change set would require the stack to be in a stable 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.
✓
Wait for the rollback to complete and then investigate the failure reason.
Why this is correct
Rollback will bring stack to previous stable state.
Related concept
Read the scenario before looking for a memorised answer.
✗
Delete the stack and recreate it.
Why it's wrong here
Deletion is not needed; rollback is in progress.
✗
Manually update the Auto Scaling group to correct the issue.
Why it's wrong here
Manual intervention may not align with stack state.
✗
Execute a change set to fix the failed resource.
Why it's wrong here
Change set cannot be executed during rollback.
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.
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: Wait for the rollback to complete and then investigate the failure reason. — Option D is correct. Since the stack is in rollback, waiting for the rollback to complete is the appropriate action. The stack will attempt to roll back to the previous state. Option A is wrong because deleting the stack is not necessary; the rollback will restore the previous state. Option B is wrong because continuing the update would fail. Option C is wrong because executing a change set would require the stack to be in a stable state.
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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