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Question 186 of 1,740

Configuration Management and IaC →mediumMultiple ChoiceObjective-mapped

Quick Answer

The answer is to create an SCP in AWS Organizations that denies s3:PutBucketVersioning with a condition requiring versioning to be enabled. This is correct because Service Control Policies act as a centralized guardrail at the organizational root, preventing any account from disabling versioning on existing or new buckets without modifying individual templates or accounts. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this tests your understanding of governance at scale versus per-account remediation; a common trap is choosing AWS Config with auto-remediation, which is reactive and slower, or assuming IAM policies alone suffice when they can be overridden by account admins. The key insight is that SCPs enforce a deny that cannot be bypassed by child accounts, making them the most operationally efficient for organization-wide enforcement. Memory tip: SCPs are the “bouncer at the door” — they deny the action before it happens, unlike Config which calls security after the fact.

DOP-C02 Configuration Management and IaC Practice Question

This DOP-C02 practice question tests your understanding of configuration management and iac. 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 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?

Question 1mediummultiple choice

Full question →

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: A: This requires modifying all existing templates and does not prevent disabling versioning outside CloudFormation.
B
Create an SCP in AWS Organizations that denies s3:PutBucketVersioning with a condition that versioning is not enabled.
D: SCPs prevent actions that disable versioning at the organization level, covering all accounts and existing buckets.
C
Create a Service Catalog portfolio with a product that enforces versioning and require all users to launch stacks from it.
Why wrong: C: Only applies to new stacks; existing stacks are not enforced.
D
Use AWS Config with a managed rule 's3-bucket-versioning-enabled' and an automatic remediation action that enables versioning.
Why wrong: B: Config rules are detective and remediation may have delays; not as preventive.

Full breakdown with real-world context →

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 D is correct because using SCPs at the organizational level allows you to centrally deny actions that disable versioning, which is more efficient than per-account Lambda functions or IAM policies. Option A is wrong because a custom resource in each stack would require modification of every template. Option B is wrong because AWS Config rules require remediations that are not as immediate as SCPs. Option C is wrong because Service Catalog only helps with new stacks, not existing ones.

Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.

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
A: This requires modifying all existing templates and does not prevent disabling versioning outside CloudFormation.
✓
Create an SCP in AWS Organizations that denies s3:PutBucketVersioning with a condition that versioning is not enabled.
Why this is correct
D: SCPs prevent actions that disable versioning at the organization level, covering all accounts and existing buckets.
Related concept
Standard ACLs match source addresses.
✗
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
C: Only applies to new stacks; existing stacks are not enforced.
✗
Use AWS Config with a managed rule 's3-bucket-versioning-enabled' and an automatic remediation action that enables versioning.
Why it's wrong here
B: Config rules are detective and remediation may have delays; not as preventive.

Common exam traps

Common exam trap: ACLs stop at the first match

ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.

Detailed technical explanation

How to think about this question

ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.

KKey Concepts to Remember

Standard ACLs match source addresses.
Extended ACLs can match source, destination, protocol and ports.
The first matching ACL entry is used.
There is usually an implicit deny at the end.

TExam Day Tips

Check inbound versus outbound direction.
Read the ACL from top to bottom.
Look for a broader permit or deny above the intended line.

Key takeaway

ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.

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.

What to study next

Got this wrong? Here's your next step.

Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related DOP-C02 ACL questions on filtering logic and placement.

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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 — Standard ACLs match source addresses..

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 D is correct because using SCPs at the organizational level allows you to centrally deny actions that disable versioning, which is more efficient than per-account Lambda functions or IAM policies. Option A is wrong because a custom resource in each stack would require modification of every template. Option B is wrong because AWS Config rules require remediations that are not as immediate as SCPs. Option C is wrong because Service Catalog only helps with new stacks, not existing ones.

What should I do if I get this DOP-C02 question wrong?

What is the key concept behind this question?

Standard ACLs match source addresses.

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