DEA-C01 Data Operations and Support Practice Question
Network Topology
Refer to the exhibit. A data engineer runs the command on an Amazon S3 bucket used for data lake storage. The engineer is concerned about accidental overwrites of objects. What does the output indicate?
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
✓
Versioning is enabled, so previous versions of objects are preserved.
The Status 'Enabled' indicates versioning is turned on for the bucket, preserving previous versions. Option B is wrong because versioning does not automatically delete old versions; they are retained until explicitly deleted. Option C is wrong because versioning does not enable encryption; encryption is a separate setting. Option D is wrong because MFA Delete is not displayed in this status output; it is a different bucket property.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Versioning is enabled, so previous versions of objects are preserved.
Why this is correct
Correct. The Status 'Enabled' indicates versioning is turned on for the bucket. With versioning enabled, if an object is overwritten, a new version is created and the previous version is preserved, preventing accidental permanent loss of the overwritten data.
- ✗
Old versions will be automatically deleted after a retention period.
Why it's wrong here
Incorrect. Versioning itself does not automatically delete old versions. Old versions are retained indefinitely until you explicitly delete them or configure a lifecycle policy. Therefore, the output showing versioning enabled does not imply automatic deletion.
- ✗
Objects are encrypted at rest by default.
Why it's wrong here
Incorrect. Versioning is a separate feature from encryption. The output shown does not provide any information about default encryption settings. Encryption at rest is configured independently of versioning.
- ✗
MFA Delete is disabled, meaning anyone can delete objects permanently.
Why it's wrong here
Incorrect. The output shows the versioning status, not MFA Delete status. MFA Delete is a separate bucket property that can be enabled to require multi-factor authentication for permanent deletions or versioning changes. The displayed output does not indicate whether MFA Delete is enabled or disabled.
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.