DEA-C01 Data Operations and Support Practice Question
A company stores sensitive data in Amazon S3. To meet compliance requirements, they need to ensure that any data older than 1 year is automatically moved to a lower-cost storage class. Which S3 feature should they use?
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 Lifecycle policies
S3 Lifecycle policies allow you to define rules to automatically transition objects between storage classes based on age. Option B is correct. Option A is incorrect because S3 Replication is used to replicate objects across buckets, not to transition storage classes. Option C is incorrect because S3 Glacier is a storage class, not a feature that automates transitions. Option D is incorrect because S3 Intelligent-Tiering automatically moves data between access tiers based on usage, not on a fixed age threshold like 1 year.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
S3 Replication
Why it's wrong here
Replication is for copying data, not changing storage class.
- ✓
S3 Lifecycle policies
Why this is correct
Lifecycle policies can transition objects to lower-cost storage classes based on age.
- ✗
S3 Glacier
Why it's wrong here
Glacier is a storage class, not a policy to automate transitions.
- ✗
S3 Intelligent-Tiering
Why it's wrong here
Intelligent-Tiering automatically moves data but does not guarantee a specific age-based transition.
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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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.