DEA-C01 Data Store Management Practice Question
Which TWO features of Amazon S3 help protect data from accidental deletion or modification? (Choose two.)
⚠ Common exam trap
Many exam-takers confuse data protection features (like encryption or replication) with deletion prevention, mistakenly selecting Lifecycle policies or Cross-Region Replication because they think 'protection' includes backup or security, when the question specifically asks about preventing accidental deletion or modification.
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
✓
S3 MFA Delete
C is correct because S3 MFA Delete requires multi-factor authentication for permanent deletion of objects or suspension of versioning, adding a critical layer of protection against accidental or malicious deletions. D is correct because S3 Object Versioning preserves every version of an object, allowing recovery from accidental overwrites or deletions by restoring a previous version.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Lifecycle policies
Why it's wrong here
Lifecycle policies automate transitions and expirations, not protection from deletion.
- ✗
Default encryption
Why it's wrong here
Encryption protects data at rest, not from deletion.
- ✓
S3 MFA Delete
Why this is correct
MFA Delete requires additional authentication for deletions.
- ✓
S3 Object Versioning
Why this is correct
Versioning preserves old versions of objects.
- ✗
Cross-Region Replication
Why it's wrong here
Replication copies data to another region, but doesn't prevent deletion.
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.