- A
Add a CloudFormation custom resource to each template that enables versioning and attaches a Lambda function to re-enable it if disabled.
Why wrong: Add a CloudFormation custom resource to each template that enables versioning and attaches a Lambda function to re-enable it if disabled. This approach requires modifying every template and introduces custom logic, making it less operationally efficient and harder to maintain across multiple accounts.
- B
Create an SCP in AWS Organizations that denies s3:PutBucketVersioning with a condition that versioning is not enabled.
An SCP in AWS Organizations can centrally deny the s3:PutBucketVersioning API action unless versioning is already enabled, preventing non-compliant buckets from being created or updated across all accounts. This is a preventive control and is the most operationally efficient.
- C
Create a Service Catalog portfolio with a product that enforces versioning and require all users to launch stacks from it.
Why wrong: Create a Service Catalog portfolio with a product that enforces versioning and require all users to launch stacks from it. This approach does not enforce the policy on existing or externally created stacks and requires users to use a specific portal, adding overhead.
- D
Use AWS Config with a managed rule 's3-bucket-versioning-enabled' and an automatic remediation action that enables versioning.
Why wrong: AWS Config with a managed rule and automatic remediation is a detective and reactive approach. It detects non-compliant buckets after creation and then enables versioning, but it does not prevent the violation from occurring. This is less operationally efficient than a preventive SCP.
DOP-C02 Configuration Management and IaC Practice Question
This DOP-C02 practice question tests your understanding of configuration management and iac. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 manage its infrastructure. The security team requires that all S3 buckets have versioning enabled. A DevOps engineer needs to enforce this policy across all accounts in an AWS Organization. Which solution is MOST operationally efficient?
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 an SCP in AWS Organizations that denies s3:PutBucketVersioning with a condition that versioning is not enabled.
Option B is correct because an SCP (Service Control Policy) in AWS Organizations can centrally deny the s3:PutBucketVersioning API action unless versioning is already enabled, effectively preventing any S3 bucket from being created or updated without versioning across all accounts in the organization. This is the most operationally efficient solution as it requires no per-account configuration, no custom resources, and no remediation logic—it enforces the policy at the AWS Organizations level before any API call succeeds.
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.
- ✗
Add a CloudFormation custom resource to each template that enables versioning and attaches a Lambda function to re-enable it if disabled.
Why it's wrong here
Add a CloudFormation custom resource to each template that enables versioning and attaches a Lambda function to re-enable it if disabled. This approach requires modifying every template and introduces custom logic, making it less operationally efficient and harder to maintain across multiple accounts.
- ✓
Create an SCP in AWS Organizations that denies s3:PutBucketVersioning with a condition that versioning is not enabled.
Why this is correct
An SCP in AWS Organizations can centrally deny the s3:PutBucketVersioning API action unless versioning is already enabled, preventing non-compliant buckets from being created or updated across all accounts. This is a preventive control and is the most operationally efficient.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create a Service Catalog portfolio with a product that enforces versioning and require all users to launch stacks from it.
Why it's wrong here
Create a Service Catalog portfolio with a product that enforces versioning and require all users to launch stacks from it. This approach does not enforce the policy on existing or externally created stacks and requires users to use a specific portal, adding overhead.
- ✗
Use AWS Config with a managed rule 's3-bucket-versioning-enabled' and an automatic remediation action that enables versioning.
Why it's wrong here
AWS Config with a managed rule and automatic remediation is a detective and reactive approach. It detects non-compliant buckets after creation and then enables versioning, but it does not prevent the violation from occurring. This is less operationally efficient than a preventive SCP.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often choose AWS Config with automatic remediation (Option D) because it seems automated, but they overlook that it is a detective and reactive approach that only fixes non-compliance after the fact, whereas an SCP (Option B) is a preventive control that blocks the non-compliant action entirely, which is more operationally efficient for enforcing a mandatory policy across an organization.
Detailed technical explanation
How to think about this question
SCPs are evaluated as a deny-by-default filter on all IAM actions across an AWS Organization, and they work by evaluating the effective permissions before the API call is executed. The condition key 's3:VersioningEnabled' is not a standard AWS condition key; instead, the SCP must use a combination of 's3:PutBucketVersioning' and a condition that checks the request parameters (e.g., 'StringNotEquals' on 's3:versioningstatus' to 'Enabled') to deny the action if the request does not set versioning to Enabled. This ensures that any attempt to create or modify a bucket without enabling versioning is blocked at the API level, providing a preventive control that is more reliable than reactive remediation.
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.
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
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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 — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create an SCP in AWS Organizations that denies s3:PutBucketVersioning with a condition that versioning is not enabled. — Option B is correct because an SCP (Service Control Policy) in AWS Organizations can centrally deny the s3:PutBucketVersioning API action unless versioning is already enabled, effectively preventing any S3 bucket from being created or updated without versioning across all accounts in the organization. This is the most operationally efficient solution as it requires no per-account configuration, no custom resources, and no remediation logic—it enforces the policy at the AWS Organizations level before any API call succeeds.
What should I do if I get this DOP-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
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