easyMultiple SelectObjective-mapped
MLA-C01 Practice Question: Which TWO data storage options are commonly used…
Which TWO data storage options are commonly used by Amazon SageMaker Feature Store for offline and online storage?
⚠ Common exam trap
Candidates often confuse Amazon ElastiCache (a caching layer) with the primary online storage service, or assume Amazon Redshift is used for offline storage due to its analytical capabilities, but SageMaker Feature Store specifically integrates DynamoDB for online and S3 for offline storage as first-class options.
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
Amazon SageMaker Feature Store uses Amazon S3 as the default offline storage layer because it provides durable, scalable, and cost-effective object storage for large volumes of historical feature data. Amazon DynamoDB is used as the default online storage layer because it offers low-latency, single-digit millisecond read/write performance required for real-time inference serving.
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 Redshift
Why it's wrong here
Redshift is a data warehouse, not a standard Feature Store storage layer.
- ✗
Amazon RDS
Why it's wrong here
RDS is relational database, not used as a primary store in Feature Store.
- ✗
Amazon ElastiCache
Why it's wrong here
ElastiCache is a caching layer, not a durable store for features.
- ✓
Amazon S3
Why this is correct
S3 is the default offline store for large historical feature data.
- ✓
Amazon DynamoDB
Why this is correct
DynamoDB serves as the online store for low-latency feature retrieval.
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 |
Go deeper
Related to this question
About these practice questions
One of 835 original MLA-C01 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This MLA-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 MLA-C01 exam.