DEA-C01 Data Security and Governance Practice Question
Network Topology
Refer to the exhibit. A data engineer queries AWS CloudTrail to investigate a PutObject event. What does the exhibit reveal about the object sensitive.csv?
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
✓
The object was uploaded with server-side encryption using AWS KMS.
The CloudTrail event contains `x-amz-server-side-encryption: aws:kms`, which confirms the object was uploaded with server-side encryption using AWS KMS (SSE-KMS). Option A is incorrect because the event shows a successful upload, not a failure. Option C is incorrect because the event indicates encryption was applied. Option D is incorrect because SSE-S3 would show `AES256`, not `aws:kms`.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The upload failed due to encryption mismatch.
Why it's wrong here
The event is a successful PutObject.
- ✓
The object was uploaded with server-side encryption using AWS KMS.
Why this is correct
x-amz-server-side-encryption: aws:kms indicates SSE-KMS.
- ✗
The object was not encrypted at rest.
Why it's wrong here
It shows encryption with KMS.
- ✗
The object was encrypted with SSE-S3.
Why it's wrong here
SSE-S3 would show AES256.
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
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DEA-C01 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 DEA-C01 exam.