← DOP-C02·Amazon Web Services

Question 492 of 1,750

Security and Compliance →hardMultiple ChoiceObjective-mapped

Add Manual Approval Step for CloudFormation Deployment in CodePipeline

This DOP-C02 practice question tests your understanding of security and compliance. 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 is using AWS CodePipeline to deploy a web application across multiple AWS accounts using CloudFormation stack sets. The pipeline is in the tools account, and it deploys to production account. The security team requires that all CloudFormation changes to production account be reviewed and approved by a senior engineer. Which approach meets this requirement?

A
Use AWS CloudTrail to monitor deployments and send notifications for review.
Why wrong: CloudTrail logs API calls but does not enforce a manual approval gate; it only provides visibility after the fact.
B
Configure an IAM policy that denies CloudFormation actions in the production account except for a specific role used by the senior engineer.
Why wrong: This would require the senior engineer to manually run the stack set, which is not automated and defeats the purpose of the pipeline.
C
Add a manual approval step in the CodePipeline before the CloudFormation deployment stage.
This allows a designated approver to review the deployment and approve or reject it before the stack set update is executed.
D
Use a service control policy (SCP) to prevent CloudFormation changes from the tools account.
Why wrong: SCPs are preventive controls that deny actions; they do not provide a manual approval workflow and would block all deployments.

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

✓

Add a manual approval step in the CodePipeline before the CloudFormation deployment stage.

Adding a manual approval step in CodePipeline before the CloudFormation deployment stage allows a senior engineer to review and approve changes, meeting the security requirement. Option A is incorrect because CloudTrail only logs actions after they occur and does not provide a review mechanism. Option B is incorrect because denying CloudFormation actions to all but a specific role would prevent the pipeline from deploying unless it uses that role, but it does not enforce a manual review process. Option D is incorrect because SCPs are preventive controls that block actions, not a mechanism for manual approval.

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.

✗
Use AWS CloudTrail to monitor deployments and send notifications for review.
Why it's wrong here
CloudTrail logs API calls but does not enforce a manual approval gate; it only provides visibility after the fact.
✗
Configure an IAM policy that denies CloudFormation actions in the production account except for a specific role used by the senior engineer.
Why it's wrong here
This would require the senior engineer to manually run the stack set, which is not automated and defeats the purpose of the pipeline.
✓
Add a manual approval step in the CodePipeline before the CloudFormation deployment stage.
Why this is correct
This allows a designated approver to review the deployment and approve or reject it before the stack set update is executed.
Related concept
Standard ACLs match source addresses.
✗
Use a service control policy (SCP) to prevent CloudFormation changes from the tools account.
Why it's wrong here
SCPs are preventive controls that deny actions; they do not provide a manual approval workflow and would block all deployments.

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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.

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?

Security and Compliance — This question tests Security and Compliance — Standard ACLs match source addresses..

What is the correct answer to this question?

The correct answer is: Add a manual approval step in the CodePipeline before the CloudFormation deployment stage. — Adding a manual approval step in CodePipeline before the CloudFormation deployment stage allows a senior engineer to review and approve changes, meeting the security requirement. Option A is incorrect because CloudTrail only logs actions after they occur and does not provide a review mechanism. Option B is incorrect because denying CloudFormation actions to all but a specific role would prevent the pipeline from deploying unless it uses that role, but it does not enforce a manual review process. Option D is incorrect because SCPs are preventive controls that block actions, not a mechanism for manual approval.

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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