DEA-C01 Data Security and Governance Practice Question
A data engineer needs to ensure that an S3 bucket can only be accessed from a specific VPC. Which policy element should be used?
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
✓
Use the condition key aws:SourceVpc in the bucket policy.
The condition key aws:SourceVpc restricts requests to originate from a specific VPC. Option C (aws:SourceVpce) limits access to a VPC endpoint, not the VPC itself. Option B (aws:SourceIp) restricts by IP address, not VPC. Option A (aws:VpcSourceIp) is not a valid condition key.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use the condition key aws:VpcSourceIp in the bucket policy.
Why it's wrong here
Not a valid condition key.
- ✗
Use the condition key aws:SourceIp in the bucket policy.
Why it's wrong here
That restricts by IP address, not VPC.
- ✗
Use the condition key aws:SourceVpce in the bucket policy.
Why it's wrong here
That restricts to a specific VPC endpoint, not the whole VPC.
- ✓
Use the condition key aws:SourceVpc in the bucket policy.
Why this is correct
This restricts access to requests from the specified VPC.
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.