Practice Test 4 | AWS Certified Cloud Practitioner | CLF-C01 | Dumps | Mock Test

Correct Answer: C

For read operations, Amazon EFS One zone and Standard storage classes with general-purpose performance mode provide sub-microsecond latency. With standard storage class with Max I/O, performance mode read latency is in milliseconds but customers get higher IOPS for both read and write operations. 

• Option A is incorrect as Amazon EFS Standard-Infrequent Access (EFS Standard-IA) storage class with general-purpose performance mode supports double-digit milliseconds latency for read operations.
• Option B is incorrect as With Standard storage class with Max I/O performance mode supports milliseconds of latency with higher IOPS for both read/write operations.
• Option D is incorrect as this is an invalid option. One Zone Storage class always uses general-purpose performance mode.

For more information on performance  with Amazon EFS, refer to the following URLs,

• https://docs.aws.amazon.com/efs/latest/ug/performance.html
• https://aws.amazon.com/efs/faq/