- A
Assign an instance profile to the user.
Why wrong: Instance profiles are for EC2 instances, not for users.
- B
Create a VPC endpoint policy.
Why wrong: VPC endpoint policies control access via VPC, not user permissions.
- C
Attach an IAM policy to the user.
IAM policies attached to users grant permissions.
- D
Add the user to an IAM group with a policy.
Group membership inherits permissions.
- E
Use an SCP to allow access.
Why wrong: SCPs are used to deny, not to grant permissions.
Question 656 of 1,748
SCS-C02 Identity and Access Management Practice Question
This SCS-C02 practice question tests your understanding of identity and access management. 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 TWO of the following are valid ways to grant an IAM user permissions to access an S3 bucket? (Choose 2.)
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
✓
Attach an IAM policy to the user.
Option C is correct because an IAM policy attached directly to a user explicitly grants that user permissions to perform specific actions on an S3 bucket. This is a fundamental method of identity-based access control in AWS, where the policy document defines allowed or denied actions (e.g., s3:GetObject) and resources (e.g., arn:aws:s3:::example-bucket/*).
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.
- ✗
Assign an instance profile to the user.
Why it's wrong here
Instance profiles are for EC2 instances, not for users.
- ✗
Create a VPC endpoint policy.
Why it's wrong here
VPC endpoint policies control access via VPC, not user permissions.
- ✓
Attach an IAM policy to the user.
Why this is correct
IAM policies attached to users grant permissions.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Add the user to an IAM group with a policy.
Why this is correct
Group membership inherits permissions.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use an SCP to allow access.
Why it's wrong here
SCPs are used to deny, not to grant permissions.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse identity-based policies (attached to users/groups/roles) with resource-based policies (like bucket policies) or other access control mechanisms (like SCPs or VPC endpoint policies), leading them to select options that do not directly grant permissions to an IAM user.
Detailed technical explanation
How to think about this question
IAM policies are JSON documents that specify allowed or denied actions on AWS resources; when attached to a user, group, or role, they are evaluated using an explicit deny override model. For S3, both identity-based policies (like those attached to users) and resource-based policies (like bucket policies) can grant access, but the effective permissions are the union of all applicable policies minus any explicit denies. In a real-world scenario, attaching a policy to a user is common for individual developer access, while group policies are used for team-based access management.
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
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Identity and Access Management — study guide chapter
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FAQ
Questions learners often ask
What does this SCS-C02 question test?
Identity and Access Management — This question tests Identity and Access Management — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Attach an IAM policy to the user. — Option C is correct because an IAM policy attached directly to a user explicitly grants that user permissions to perform specific actions on an S3 bucket. This is a fundamental method of identity-based access control in AWS, where the policy document defines allowed or denied actions (e.g., s3:GetObject) and resources (e.g., arn:aws:s3:::example-bucket/*).
What should I do if I get this SCS-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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