The answer is permission boundaries, the AWS IAM feature that sets the maximum permissions an IAM entity can have, regardless of what its identity-based policies allow. This works because permission boundaries act as a guardrail: the effective permissions are the intersection of the identity-based policy and the boundary, meaning even if a policy grants full admin access, the boundary caps it at a defined limit. On the AWS Certified Cloud Practitioner CLF-C02 exam, this concept often appears in questions contrasting IAM features, with a common trap being to confuse permission boundaries with Service Control Policies (SCPs). While both set maximum permissions, SCPs apply to entire accounts or organizational units in AWS Organizations, whereas permission boundaries apply to individual IAM users or roles within a single account. A helpful memory tip: think of permission boundaries as a “personal cap” for a user or role, while SCPs are an “account-wide ceiling” set by the organization.
CLF-C02 Security and Compliance Practice Question
This CLF-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.
Which AWS IAM feature allows you to set the maximum permissions that IAM entities in an account can have, regardless of what their identity-based policies allow?
Why wrong: IAM Conditions add contextual constraints to policies (time, IP, MFA status) — they don't cap the maximum permissions an entity can have.
B
Permission Boundaries
Permission Boundaries define the maximum permissions an IAM entity can have — even if attached policies grant more, the boundary limits actual effective permissions.
C
Service Control Policies (SCPs)
Why wrong: SCPs work at the AWS Organizations level and apply to all principals in a member account — Permission Boundaries apply to individual IAM users or roles within an account.
D
Resource-based policies
Why wrong: Resource-based policies control which principals can access a resource — they don't cap the maximum permissions of an IAM entity.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Permission Boundaries
Permission Boundaries are an AWS IAM feature that sets the maximum permissions an IAM entity (user or role) can have. They act as a guardrail, limiting the effective permissions to the intersection of the identity-based policy and the boundary, regardless of what the identity-based policy allows. This ensures that even if a policy grants broad access, the boundary caps it at a defined maximum.
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.
✗
IAM Conditions
Why it's wrong here
IAM Conditions add contextual constraints to policies (time, IP, MFA status) — they don't cap the maximum permissions an entity can have.
✓
Permission Boundaries
Why this is correct
Permission Boundaries define the maximum permissions an IAM entity can have — even if attached policies grant more, the boundary limits actual effective permissions.
Related concept
Read the scenario before looking for a memorised answer.
✗
Service Control Policies (SCPs)
Why it's wrong here
SCPs work at the AWS Organizations level and apply to all principals in a member account — Permission Boundaries apply to individual IAM users or roles within an account.
✗
Resource-based policies
Why it's wrong here
Resource-based policies control which principals can access a resource — they don't cap the maximum permissions of an IAM entity.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is confusing Permission Boundaries with Service Control Policies (SCPs), as both set permission limits, but SCPs operate at the AWS Organizations account level, not at the individual IAM entity level within a single account.
Detailed technical explanation
How to think about this question
Under the hood, the effective permissions for an IAM user or role are the intersection of the identity-based policy and the permission boundary. For example, if an identity-based policy grants s3:* but the permission boundary only allows s3:GetObject, the effective permissions are limited to s3:GetObject. This is evaluated using the same policy evaluation logic as other policies, and the boundary is explicitly defined as a separate policy document. A real-world scenario is delegating admin tasks to developers: you can attach a permission boundary that restricts them to EC2 and CloudWatch, preventing them from escalating privileges to IAM or S3 even if their identity-based policy is overly permissive.
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 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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CLF-C02 question in full detail.
Security and Compliance — This question tests Security and Compliance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Permission Boundaries — Permission Boundaries are an AWS IAM feature that sets the maximum permissions an IAM entity (user or role) can have. They act as a guardrail, limiting the effective permissions to the intersection of the identity-based policy and the boundary, regardless of what the identity-based policy allows. This ensures that even if a policy grants broad access, the boundary caps it at a defined maximum.
What should I do if I get this CLF-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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Question Discussion
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