mediumMultiple ChoiceObjective-mapped
CCSP Practice Question: A cloud administrator applies the bucket policy…
Exhibit
Refer to the exhibit.
```
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Deny",
"Action": "s3:PutObject",
"Resource": "arn:aws:s3:::my-bucket/*",
"Condition": {
"StringNotEquals": {
"s3:x-amz-server-side-encryption": "AES256"
}
}
}
]
}
```A cloud administrator applies the bucket policy shown in the exhibit to an S3 bucket. What is the expected outcome?
⚠ Common exam trap
Candidates often confuse the requirement for any encryption metadata (option B) with the specific requirement for SSE-S3 (AES256), or they mistakenly think the policy enforces KMS (option C) because they overlook the exact header value `AES256` in the condition.
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
✓
All objects uploaded must be encrypted using server-side encryption with S3-managed keys (SSE-S3)
The bucket policy explicitly denies uploads unless the `x-amz-server-side-encryption` header is set to `AES256`, which corresponds to SSE-S3. This ensures all objects uploaded to the bucket are encrypted at rest using server-side encryption with S3-managed keys, as the policy condition enforces the presence of that specific encryption header.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
All objects uploaded must be encrypted using server-side encryption with S3-managed keys (SSE-S3)
Why this is correct
The condition requires x-amz-server-side-encryption: AES256, which is SSE-S3.
- ✗
All upload requests will be denied unless they include encryption metadata
Why it's wrong here
Only uploads without AES256 encryption are denied.
- ✗
All objects must be encrypted with AWS KMS keys
Why it's wrong here
AES256 is SSE-S3, not KMS.
- ✗
All objects uploaded must be client-side encrypted before uploading
Why it's wrong here
The policy does not enforce client-side encryption.
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
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CCSP practice question is part of Courseiva's free ISC2 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 CCSP exam.