DEA-C01 Data Store Management Practice Question
Which TWO are benefits of using Amazon S3 Object Lock? (Choose TWO.)
⚠ Common exam trap
Candidates often confuse S3 Object Lock with S3 Versioning or S3 Lifecycle policies, mistakenly thinking Object Lock handles encryption or storage tier transitions, when in reality it is solely focused on preventing object deletion or overwrite for compliance-driven WORM scenarios.
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
✓
Helps meet regulatory requirements for write-once-read-many (WORM) storage.
Amazon S3 Object Lock helps meet regulatory requirements for write-once-read-many (WORM) storage by allowing you to set retention periods and legal holds on objects. This ensures that data cannot be deleted or overwritten for a specified duration, which is a common requirement for compliance frameworks such as SEC Rule 17a-4 or FINRA.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Helps meet regulatory requirements for write-once-read-many (WORM) storage.
Why this is correct
Object Lock supports compliance and governance modes.
- ✗
Encrypts objects at rest using AWS KMS.
Why it's wrong here
Encryption is separate from Object Lock.
- ✓
Prevents objects from being deleted or overwritten for a fixed time.
Why this is correct
Object Lock enforces retention.
- ✗
Automatically transitions objects to lower-cost storage classes.
Why it's wrong here
Lifecycle policies handle transitions.
- ✗
Enables automatic versioning of objects.
Why it's wrong here
Versioning is a separate S3 feature.
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 |
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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.