AWS Certified Cloud Practitioner — Question 320

A company's project team needs to simultaneously mount a file system on multiple Amazon EC2 Linux instances. The file system also will be shared across multiple Availability Zones.

Which AWS service will meet these requirements?

Answer options

• A. Amazon Elastic File System (Amazon EFS)
• B. Amazon S3
• C. Amazon Elastic Block Store (Amazon EBS)
• D. Amazon FSx for Windows File Server

Correct answer: A

Explanation

Amazon Elastic File System (Amazon EFS) supports the Network File System (NFS) protocol, allowing multiple Amazon EC2 Linux instances to mount and access the file system concurrently across multiple Availability Zones. Amazon EBS is a block storage service designed to connect to a single EC2 instance in a single AZ, while Amazon S3 is object storage rather than a standard mountable file system. Amazon FSx for Windows File Server is specifically optimized for Windows-based workloads rather than Linux instances.