Which of the following is an example of secondary storage?
A. Registers
B. Cache
C. RAM
D. Hard disk
Answer: Option D
Solution (By JKSSB Mock Tests)
Secondary storage refers to non-volatile storage that is not directly accessible by the CPU, such as hard disks, SSDs, and optical discs. RAM and cache are primary storage; registers are internal to CPU.
Explanation:
Hard Disk Drives use platters coated with magnetic material and magnetic heads to alter and read polarization patterns representing binary data.
Explanation:
Firmware (like BIOS) is stored in ROM (or flash memory) because it is non-volatile and retains data without power, and is not meant to be frequently changed.
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