AWS Certified Cloud Practitioner — Question 613

A company runs business applications in an on-premises data center and in the AWS Cloud. The company needs a shared file system that can be available to both environments.

Which AWS service meets these requirements?

Answer options

• A. Amazon Elastic Block Store (Amazon EBS)
• B. Amazon S3
• C. Amazon ElastiCache
• D. Amazon Elastic File System (Amazon EFS)

Correct answer: D

Explanation

Amazon Elastic File System (Amazon EFS) provides a fully managed, shared file system that supports the NFS protocol and can be mounted on-premises via AWS Direct Connect or AWS VPN, as well as on AWS resources. Amazon EBS is a block storage service designed for individual EC2 instances and does not support native on-premises sharing. Amazon S3 is an object storage service, and Amazon ElastiCache is an in-memory data store, neither of which functions as a traditional shared file system.