Which of the following are typical use cases of Amazon EFS One Zone storage classes? (Select THREE)

Answer options:

A.Data is stored redundantly in a single AZ.
B.Up to thousands of Amazon EC2 instances from multiple AZs, can connect concurrently to a file system.
C.Boot volumes, transactional and NoSQL databases, data warehousing, and ETL.
D.Big data and analytics, media processing workflows, content management, web serving, and home directories that do not require Multi-AZ resilience.
E.Cross region replication.

Answer: A, B, D
The following table shows the characteristics of EFS vs. EBS.
Refer to page 123 on the below link:
https://docs.aws.amazon.com/efs/latest/ug/efs-ug.pdf#performance
Option A, Option B, and Option D are characteristics of EFS.
Option C is characteristic of EBS.
Option E is characteristic of S3.
For more information on AWS EFS use cases, refer to the documentation here. 
https://docs.aws.amazon.com/efs/latest/ug/performance.html#performance-usecases