CLF-C02 Security and Compliance Practice Question
A company uses AWS Organizations with multiple accounts. The security team wants to enforce a policy that prevents any user, including account administrators, from creating Amazon S3 buckets that are publicly accessible across the entire organization. The policy must be centrally managed and cannot be overridden by individual account administrators. Which AWS feature should the security team use?
⚠ Common exam trap
It's easy for candidates to confuse SCPs with IAM policies, thinking IAM Deny effects can be centrally managed and enforced across accounts, but IAM policies are account-scoped and can be overridden by local administrators, whereas SCPs operate at the organization level and are non-overridable.
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
✓
Service Control Policies (SCPs) in AWS Organizations
Service Control Policies (SCPs) in AWS Organizations are the correct choice because they allow the security team to centrally define a policy that denies the creation of publicly accessible S3 buckets across all accounts in the organization. SCPs apply to all users, including account administrators, and cannot be overridden by any IAM policy or local account permissions, ensuring organization-wide enforcement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
AWS Config rules with auto-remediation
Why it's wrong here
AWS Config rules are used to evaluate resource configurations for compliance, and auto-remediation can trigger actions to fix noncompliant resources. However, they do not prevent the creation of publicly accessible S3 buckets in real time; they react after the resource is created. Additionally, account administrators could disable or modify the rules. This does not meet the requirement for a policy that cannot be overridden.
- ✓
Service Control Policies (SCPs) in AWS Organizations
Why this is correct
SCPs are a type of organization policy that you can use to specify the maximum permissions for member accounts. They apply to all users and roles in the account, including the account root user, and cannot be overridden by any IAM policy within those accounts. By attaching an SCP that denies actions that make S3 buckets public (e.g., setting a bucket policy that allows public access), the security team can enforce this restriction across the entire organization.
- ✗
AWS Identity and Access Management (IAM) policies with a Deny effect
Why it's wrong here
IAM policies can deny actions, but they are attached to individual IAM users, groups, or roles within a single AWS account. Account administrators have full control over IAM policies in their own account and could create policies that override these denials. This approach does not provide centralized, unchangeable enforcement across all accounts in the organization.
When this WOULD be correct
An exam scenario where a company wants to restrict S3 bucket public access for specific IAM users or roles within a single account, and the policy must be applied at the user/role level without affecting other accounts. In that case, IAM policies with a Deny effect would be appropriate.
- ✗
Amazon Macie with automated response
Why it's wrong here
Amazon Macie is a fully managed data security and data privacy service that uses machine learning to discover, monitor, and protect sensitive data in AWS. It can alert on publicly accessible S3 buckets, but it does not have the ability to prevent the creation of such buckets. It is a detection tool, not an enforcement mechanism, and it does not provide a policy that account administrators cannot override.
When this WOULD be correct
A company wants to automatically detect and respond to publicly accessible S3 buckets containing sensitive data, such as PII, by triggering remediation actions like applying bucket policies or notifying security teams.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The CLF-C02 exam frequently reuses these exact scenarios with slightly different constraints.
✓Service Control Policies (SCPs) in AWS OrganizationsCorrect answer▾
Why this is correct
SCPs are a type of organization policy that you can use to specify the maximum permissions for member accounts. They apply to all users and roles in the account, including the account root user, and cannot be overridden by any IAM policy within those accounts. By attaching an SCP that denies actions that make S3 buckets public (e.g., setting a bucket policy that allows public access), the security team can enforce this restriction across the entire organization.
✗AWS Identity and Access Management (IAM) policies with a Deny effectWrong answer — click to see why▾
Why this is wrong here
IAM policies with a Deny effect can be overridden by account administrators who have full administrative privileges in their own accounts, as they can modify or remove IAM policies. The question requires a centrally managed policy that cannot be overridden, which is only possible with SCPs.
★ When this WOULD be the correct answer
An exam scenario where a company wants to restrict S3 bucket public access for specific IAM users or roles within a single account, and the policy must be applied at the user/role level without affecting other accounts. In that case, IAM policies with a Deny effect would be appropriate.
Why candidates choose this
Candidates may think IAM policies can enforce organization-wide restrictions, but they overlook that account administrators can bypass IAM policies by modifying them or using their own permissions.
✗Amazon Macie with automated responseWrong answer — click to see why▾
Why this is wrong here
Amazon Macie is a data security service that discovers and protects sensitive data, but it does not enforce policies to prevent S3 bucket creation or public access; it only detects and alerts on public buckets or sensitive data.
★ When this WOULD be the correct answer
A company wants to automatically detect and respond to publicly accessible S3 buckets containing sensitive data, such as PII, by triggering remediation actions like applying bucket policies or notifying security teams.
Why candidates choose this
Candidates may confuse Macie's automated response capabilities with policy enforcement, thinking it can prevent public bucket creation, when it actually focuses on detection and remediation after the fact.
Analysis generated from the official CLF-C02blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
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 |
Go deeper
Related to this question
About these practice questions
This CLF-C02 question is part of Courseiva's 988-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CLF-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 CLF-C02 exam.