SAP-C02 Practice Question: Accelerate Workload Migration and Modernization
A company is migrating a legacy on-premises application to AWS. The application uses a shared file system for user home directories. Which AWS service should the company use to minimize changes to the application while providing scalable, highly available file storage?
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 EFS
(Amazon EFS) is correct because it provides a scalable, fully managed NFS file system that can be mounted by multiple EC2 instances, minimizing application changes. Option A (FSx for Lustre) is for high-performance computing, not general file sharing. Option B (EBS) is block storage attached to a single instance. Option C (S3) is object storage, not a file system.
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 FSx for Lustre
Why it's wrong here
FSx for Lustre is designed for HPC workloads, not general file sharing with minimal changes.
- ✗
Amazon EBS
Why it's wrong here
EBS volumes can only be attached to a single EC2 instance, not shared.
- ✗
Amazon S3
Why it's wrong here
S3 is object storage, not a shared file system, and would require application changes.
- ✓
Amazon EFS
Why this is correct
Amazon EFS provides a scalable NFS file system that can be shared across EC2 instances, minimizing changes.
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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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.