- A
Lifecycle policies
Why wrong: Lifecycle policies automate transitions and expirations, not protection from deletion.
- B
Default encryption
Why wrong: Encryption protects data at rest, not from deletion.
- C
S3 MFA Delete
MFA Delete requires additional authentication for deletions.
- D
S3 Object Versioning
Versioning preserves old versions of objects.
- E
Cross-Region Replication
Why wrong: Replication copies data to another region, but doesn't prevent deletion.
Question 15 of 1,786
DEA-C01 Data Store Management Practice Question
This DEA-C01 practice question tests your understanding of data store management. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO features of Amazon S3 help protect data from accidental deletion or modification? (Choose two.)
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.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
S3 Object Versioning
Why this is correct
Versioning preserves old versions of objects.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Cross-Region Replication
Why it's wrong here
Replication copies data to another region, but doesn't prevent deletion.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often 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.
Detailed technical explanation
How to think about this question
S3 Object Versioning works by assigning a unique version ID to each object upload; when an object is deleted, a delete marker is placed instead of removing the underlying data, and the object can be restored by removing the marker. MFA Delete integrates with AWS Multi-Factor Authentication (using a hardware or virtual MFA device) and requires a valid MFA code in the request header for any DeleteObject or PutBucketVersioning operation that suspends versioning—this prevents unauthorized or accidental permanent deletions even by users with full S3 permissions.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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 |
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this DEA-C01 question test?
Data Store Management — This question tests Data Store Management — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: 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.
What should I do if I get this DEA-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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.
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