Which of the following memory types is non-volatile and used for long-term storage?
A. ROM
B. Cache
C. Registers
D. RAM
Answer: Option A
Solution (By JKSSB Mock Tests)
ROM is non-volatile and retains data without power. However, for long-term storage, hard disks and SSDs are more common; ROM is typically used for firmware. Among the options, ROM is non-volatile.
Explanation:
CD-R (Recordable) can be written once and read many times. CD-RW is rewritable, and CD-ROM is read-only. DVD-RAM is a rewritable optical disc.
Explanation:
The read/write head is the component that reads data from and writes data to the platters. The actuator arm moves the head, and the spindle rotates the platters.
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