How can the user achieve this?

A user is storing a large number of objects on AWS S3. The user wants to implement the search functionality among the objects.

How can the user achieve this?
A . Use the indexing feature of S3.
B . Tag the objects with the metadata to search on that.
C . Use the query functionality of S3.
D . Make your own DB system which stores the S3 metadata for the search functionality.

Answer: D

Explanation:

In Amazon Web Services, AWS S3 does not provide any query facility. To retrieve a specific object the user needs to know the exact bucket / object key. In this case it is recommended to have an own DB system which manages the S3 metadata and key mapping.

Reference: http://media.amazonwebservices.com/AWS_Storage_Options.pdf