You are working as a technician at Domain.com. A user wants to know which of the following that has the fastest throughput when accessing data. What will you answer him?

A.
CD-ROM

B.
hard disk drive

C.
floppy disk drive

D.
RAM

Explanation:
Random access memory (usually known by its acronym, RAM) is a type of data storage used in computers. The word “random” refers to the fact that any piece of data can be returned in a constant time, regardless of its physical location and whether or not it is related to the previous piece of data. This contrasts with storage mechanisms such as tapes, magnetic discs and optical discs, which rely on the physical movement of the recording medium or a reading head. In these devices, the movement takes longer than the data transfer, and the retrieval time varies depending on the physical location of the next item.