Hard disk secondary memory example – UGC NET Question

The hard disk drive is a primary form of secondary storage that retains data even when the computer is powered off. It holds the operating system, applications and user files. Whether implemented with spinning platters or solid state technology, it is still referred to as a hard disk drive in common usage. Hence, the correct term for the blank is hard disk.

Option A:
Option A, random access, by itself does not specify a storage device and more often describes the way memory is accessed. It is therefore incomplete and ambiguous.

Option B:
Option B is correct because hard disk drive is the established name for the non volatile storage device described, widely used in ICT literature and everyday practice.

Option C:
Option C, optical, refers to technologies such as CDs and DVDs, which are different categories of storage media.

Option D:
Option D, cache, denotes a smaller, faster memory used to speed up access to frequently used data and does not typically store large amounts permanently.