There are two folders, A and B, in an S3 bucket. Folder A stores objects that are frequently accessed. Folder B saves objects that are long-lived, infrequently accessed, and non-critical. The retrieval time for files in folder B should be within milliseconds. You want to use different storage classes for objects in these two folders to save cost. Which storage classes are proper?

Answer options:

A.Standard for folder A and S3 Glacier for folder
B.B.Intelligent-Tiering for folder A and Reduced Redundancy for folder
B.C.Standard for folder A and One Zone-IA for folder
B.D.Two S3 buckets are required as an S3 bucket cannot have two storage classes simultaneously.

Correct Answer – C
About different storage classes of S3 objects, please check https://docs.aws.amazon.com/AmazonS3/latest/dev/storage-class-intro.html.
Folder A should use Standard as objects are frequently accessed. Folder B should use infrequently accessed storage classes such as Standard-IA or One Zone-IA.Option A is incorrect: Because S3 Glacier is improper as files cannot be retrieved within milliseconds.
Option B is incorrect: Because Reduced Redundancy is not cost-efficient for infrequently accessed objects.
Option C is CORRECT: Check the above explanations.
Option D is incorrect: Each object in an S3 bucket can have a user-defined storage class. There is no need to maintain two S3 buckets in this scenario.