- A
Use AWS Service Catalog to create a product that deploys the VPC, and share the portfolio with each account.
Why wrong: Service Catalog does not easily support per-account parameters at scale; it requires manual launches.
- B
Create a StackSet that references an Amazon S3 bucket containing a JSON file with account-specific parameters, including unique CIDR blocks for each account.
This allows each account to have a unique CIDR without manual intervention.
- C
Write a custom AWS Lambda function that iterates through each account and deploys the CloudFormation template with a different CIDR.
Why wrong: This approach is less scalable and harder to maintain than StackSets with parameter files.
- D
Create a StackSet with a single parameter for the CIDR block and deploy it to all accounts.
Why wrong: A single CIDR would cause overlap if accounts already have VPCs using that CIDR.
SAP-C02 Practice Question: Design Solutions for Organizational Complexity
This SAP-C02 practice question tests your understanding of design solutions for organizational complexity. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 Organizations with 50 accounts. The central IT team wants to deploy a CloudFormation stack set to create a VPC with a CIDR of 10.0.0.0/16 in each account, but the VPC CIDR must not overlap with existing VPCs in each account. What is the most scalable and automated approach?
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
Create a StackSet that references an Amazon S3 bucket containing a JSON file with account-specific parameters, including unique CIDR blocks for each account.
Option B is correct because CloudFormation StackSets can reference an Amazon S3 bucket containing a JSON file with account-specific parameters, allowing each account to receive a unique, non-overlapping CIDR block. This approach is fully automated, scalable to 50 accounts, and avoids manual parameter entry or custom code maintenance.
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 AWS Service Catalog to create a product that deploys the VPC, and share the portfolio with each account.
Why it's wrong here
Service Catalog does not easily support per-account parameters at scale; it requires manual launches.
- ✓
Create a StackSet that references an Amazon S3 bucket containing a JSON file with account-specific parameters, including unique CIDR blocks for each account.
Why this is correct
This allows each account to have a unique CIDR without manual intervention.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Write a custom AWS Lambda function that iterates through each account and deploys the CloudFormation template with a different CIDR.
Why it's wrong here
This approach is less scalable and harder to maintain than StackSets with parameter files.
- ✗
Create a StackSet with a single parameter for the CIDR block and deploy it to all accounts.
Why it's wrong here
A single CIDR would cause overlap if accounts already have VPCs using that CIDR.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may choose Option D (single parameter StackSet) thinking it is simpler, but they overlook the requirement for unique, non-overlapping CIDRs per account, which a single parameter cannot achieve.
Detailed technical explanation
How to think about this question
StackSets use a centralized administration account to deploy templates across multiple target accounts and regions, with parameters resolved at deployment time. By storing account-specific parameters in an S3 bucket (e.g., a JSON file mapping account IDs to unique CIDRs), the StackSet can dynamically inject unique values via a mapping or custom resource, ensuring no two accounts receive overlapping CIDRs. This approach leverages AWS CloudFormation's built-in concurrency and error handling, making it more robust than custom Lambda solutions.
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.
TExam Day Tips
- 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.
Visual reference
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
What to study next
Got this wrong? Here's your next step.
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Design Solutions for Organizational Complexity — study guide chapter
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FAQ
Questions learners often ask
What does this SAP-C02 question test?
Design Solutions for Organizational Complexity — This question tests Design Solutions for Organizational Complexity — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create a StackSet that references an Amazon S3 bucket containing a JSON file with account-specific parameters, including unique CIDR blocks for each account. — Option B is correct because CloudFormation StackSets can reference an Amazon S3 bucket containing a JSON file with account-specific parameters, allowing each account to receive a unique, non-overlapping CIDR block. This approach is fully automated, scalable to 50 accounts, and avoids manual parameter entry or custom code maintenance.
What should I do if I get this SAP-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
This SAP-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 SAP-C02 exam.
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