PAS-C01 Migration Practice Question
A company is migrating its SAP system to AWS. The system uses a custom ABAP program that writes to a local file system. Which TWO AWS services can the company use to provide a shared file system accessible to multiple EC2 instances?
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 FSx for Lustre
Options A and D are correct. Amazon EFS provides a NFS file system that can be mounted on multiple EC2 instances. Amazon FSx for Lustre is a high-performance file system that can be shared across multiple instances. Option B is wrong because Amazon RDS is a database service. Option C is wrong because Amazon S3 is object storage. Option E is wrong because Amazon EBS volumes can only be attached to one EC2 instance at a time.
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 this is correct
FSx for Lustre provides a POSIX-compliant file system for shared access.
- ✗
Amazon RDS
Why it's wrong here
RDS is a managed database service, not a file system.
- ✗
Amazon S3
Why it's wrong here
S3 is object storage, not a file system.
- ✓
Amazon EFS
Why this is correct
EFS supports NFS and can be shared across instances.
- ✗
Amazon EBS
Why it's wrong here
EBS volumes can only be attached to one instance at a time.
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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Same concept, more angles
1 more way this is tested on PAS-C01
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company is migrating an on-premises application to AWS. The application requires low-latency access to a shared file system that can be mounted by multiple EC2 instances simultaneously. Which storage solution should they use?
easy- ✓ A.Amazon Elastic File System (EFS)
- B.Amazon Elastic Block Store (EBS)
- C.Amazon Simple Storage Service (S3)
- D.Amazon EC2 Instance Store
Why A: Amazon EFS provides a scalable, shared file system for multiple EC2 instances. Option A is correct. Option B is wrong because EBS volumes can be attached to only one instance. Option C is wrong because S3 is object storage, not a file system. Option D is wrong because Instance Store is ephemeral.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PAS-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 PAS-C01 exam.