Question 1,040 of 1,711
DEA-C01 Data Store Management Practice Question
A data engineer needs to store semi-structured JSON files that are accessed infrequently but must be retrievable within minutes. The data should be stored cost-effectively. Which storage solution meets these requirements?
⚠ Common exam trap
Many candidates confuse retrieval time with retrieval cost, assuming that 'infrequent access' implies slower retrieval, but S3 Standard-IA provides the same low-latency access as S3 Standard, unlike Glacier classes which have significantly longer retrieval times.
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
✓
Amazon S3 Standard-Infrequent Access (S3 Standard-IA) storage class.
Amazon S3 Standard-Infrequent Access (S3 Standard-IA) is the correct choice because it is designed for data accessed infrequently but requires rapid retrieval (within milliseconds). It offers lower storage costs than S3 Standard while maintaining low-latency access, meeting the requirement of retrievability within minutes cost-effectively.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Amazon S3 Glacier Flexible Retrieval storage class.
Why it's wrong here
Glacier Flexible Retrieval has retrieval times from minutes to hours, but not as cost-effective for this use case compared to Standard-IA.
- ✗
Amazon S3 Glacier Deep Archive storage class.
Why it's wrong here
Deep Archive has retrieval times of 12 hours or more.
- ✓
Amazon S3 Standard-Infrequent Access (S3 Standard-IA) storage class.
Why this is correct
S3 Standard-IA is cost-effective for infrequent access with millisecond retrieval.
- ✗
Amazon S3 Standard storage class.
Why it's wrong here
S3 Standard is for frequent access and higher cost.
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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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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