DEA-C01 Data Store Management Practice Question
Which THREE of the following are valid storage classes in Amazon S3? (Choose THREE.)
⚠ Common exam trap
AWS often tests the distinction between valid S3 storage classes and fabricated names like 'S3 Archive' or 'S3 Cold', expecting candidates to recall the exact naming conventions (e.g., S3 Glacier, S3 Glacier Deep Archive) rather than generic terms.
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 Standard
S3 Standard is a valid storage class designed for frequently accessed data with low latency and high throughput. It offers 99.999999999% durability and 99.99% availability, making it suitable for a wide range of use cases like cloud applications, dynamic websites, and content distribution.
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 Standard
Why this is correct
S3 Standard is a general-purpose storage class.
- ✗
S3 Archive
Why it's wrong here
'S3 Archive' is not a valid storage class; S3 Glacier is.
- ✓
S3 Intelligent-Tiering
Why this is correct
Intelligent-Tiering automatically moves data between access tiers.
- ✗
S3 Cold
Why it's wrong here
'S3 Cold' is not a valid storage class.
- ✓
S3 One Zone-IA
Why this is correct
One Zone-IA is for infrequently accessed data in a single AZ.
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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