SAP-C02 Design for New Solutions Practice Question
A company is designing a new web application that will be deployed on Amazon ECS with Fargate. They need to store session state for the application. Which TWO services can they use for this purpose?
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 ElastiCache for Redis
Amazon ElastiCache for Redis (option D) is commonly used for session state due to its low latency and in-memory data store capabilities. Amazon DynamoDB (option E) is also suitable for session state as it provides low-latency, scalable, and fully managed NoSQL database. Option A (Amazon EFS) is a file storage service, not ideal for session state. Option B (Amazon RDS) is a relational database, which can be used but is not optimal for high-performance session state. Option C (Amazon S3) is an object store with higher latency, making it unsuitable for real-time session management.
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 EFS
Why it's wrong here
EFS is file storage, not designed for session state.
- ✗
Amazon RDS
Why it's wrong here
RDS is relational database, not optimized for session state.
- ✗
Amazon S3
Why it's wrong here
S3 is object store, high latency for session state.
- ✓
Amazon ElastiCache for Redis
Why this is correct
Redis is commonly used for session state.
- ✓
Amazon DynamoDB
Why this is correct
DynamoDB can be used for session state with low latency.
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
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SAP-C02 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 SAP-C02 exam.