- A
Use a canary deployment strategy by updating only a subset of accounts first
Why wrong: StackSets do not have a built-in canary deployment feature; you would need manual steps.
- B
Set a failure tolerance to allow a certain number of stack operation failures before the overall operation fails
Failure tolerance allows you to specify how many stack instance failures are acceptable.
- C
Pause stack instances manually if errors are detected
Why wrong: Manual pausing is not supported; you rely on failure tolerance and rollback.
- D
Configure region concurrency to control how many regions are updated at a time
You can choose to update regions sequentially or in parallel.
- E
Set the maximum concurrent accounts to control how many accounts are updated simultaneously
Concurrent accounts limit the number of accounts being updated at once.
Quick Answer
The answer is to set the maximum concurrent accounts, failure tolerance, and region concurrency settings. These three strategies work together to control CloudFormation StackSets rollout behavior: maximum concurrent accounts limits how many accounts are updated simultaneously, failure tolerance defines how many stack instance failures can be tolerated before the operation stops, and region concurrency dictates whether regions are updated sequentially or in parallel. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this question tests your understanding of StackSets operational controls, often appearing as a multi-select item where distractors include canary deployments or pausing individual stack instances—both of which are not natively supported. A common trap is confusing failure tolerance with rollback triggers; remember that failure tolerance is a count of allowed failures, not a percentage. For memory, think of the three levers: how many accounts at once, how many failures to allow, and whether to go region by region or all at once.
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 company uses AWS CloudFormation StackSets to deploy resources across multiple accounts and regions. They need to ensure that updates to the stack set are rolled out in a controlled manner, with the ability to roll back if errors occur. Which THREE strategies should they implement? (Choose THREE.)
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
Set a failure tolerance to allow a certain number of stack operation failures before the overall operation fails
StackSets support failure tolerances, concurrent accounts, and region concurrency settings to control rollouts. Options A, B, and E are correct. Option C is incorrect because CloudFormation does not support canary deployments natively. Option D is incorrect because stack instances cannot be paused individually; you would use failure tolerance settings.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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 a canary deployment strategy by updating only a subset of accounts first
Why it's wrong here
StackSets do not have a built-in canary deployment feature; you would need manual steps.
- ✓
Set a failure tolerance to allow a certain number of stack operation failures before the overall operation fails
Why this is correct
Failure tolerance allows you to specify how many stack instance failures are acceptable.
Related concept
Static NAT maps one inside address to one outside address.
- ✗
Pause stack instances manually if errors are detected
Why it's wrong here
Manual pausing is not supported; you rely on failure tolerance and rollback.
- ✓
Configure region concurrency to control how many regions are updated at a time
Why this is correct
You can choose to update regions sequentially or in parallel.
Related concept
Static NAT maps one inside address to one outside address.
- ✓
Set the maximum concurrent accounts to control how many accounts are updated simultaneously
Why this is correct
Concurrent accounts limit the number of accounts being updated at once.
Related concept
Static NAT maps one inside address to one outside address.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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. NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated. 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.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DOP-C02 NAT questions on configuration and troubleshooting.
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Configuration Management and IaC — study guide chapter
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FAQ
Questions learners often ask
What does this DOP-C02 question test?
Configuration Management and IaC — This question tests Configuration Management and IaC — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Set a failure tolerance to allow a certain number of stack operation failures before the overall operation fails — StackSets support failure tolerances, concurrent accounts, and region concurrency settings to control rollouts. Options A, B, and E are correct. Option C is incorrect because CloudFormation does not support canary deployments natively. Option D is incorrect because stack instances cannot be paused individually; you would use failure tolerance settings.
What should I do if I get this DOP-C02 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DOP-C02 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 20, 2026
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.
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