Join 60,000+ competitive exam aspirants
or with email
Your Cart
SubtotalтВ╣0
TotalтВ╣0
Examoogle тАв User тАв info@examoogle.com тАв EE-2024-8821
Chapter 1 of 12 тАв Page 1 of 248ЁЯФТ Protected PDF тАв Watermarked
Join 60,000+ competitive exam aspirants
Which of the following is considered a non-volatile storage device?
RAM
Cache Memory
Hard Disk Drive
Registers
Hard Disk Drive
A non-volatile storage device retains its stored data even when the power supply is interrupted or turned off. Hard Disk Drives (HDD) utilize magnetic storage to maintain binary data state without the need for a continuous electrical current.
A non-volatile storage device retains its stored data even when the power supply is interrupted or turned off. Hard Disk Drives (HDD) utilize magnetic storage to maintain binary data state without the need for a continuous electrical current.
Capacity=Heads├ЧTracks├ЧSectors├ЧBytes┬аper┬аSector тАФ represents the storage capacity calculation of a disk drive.
The HDD employs rotating magnetic platters and read/write heads. Data is encoded as magnetic polarization on the surface of the platters, where 0s and 1s are represented by specific magnetic orientations. Because these magnetic states are physically stable, the data persists once the platter rotation stops or power is removed.
Non-volatile memory preserves data after the power source is cut off.
Volatile memory (RAM, Cache) requires continuous power to maintain state.
Hard Disk Drives provide high-capacity, low-cost secondary storage.
Magnetic storage media are inherently non-volatile compared to capacitive-based memory like DRAM.
High storage capacity at a low cost per gigabyte.
Data persistence without electrical power consumption.
Slower access times compared to semiconductor memory (RAM/Cache).
Contains moving mechanical parts which are prone to wear and physical damage.
Long-term data archival.
Operating system and software installation storage.
Mass storage in desktop and enterprise server systems.
| Feature | RAM/Cache/Registers | Hard Disk Drive |
|---|---|---|
Volatility | Volatile | Non-Volatile |
Volatile memory relies on charge storage in capacitors (DRAM) or transistor flip-flops (SRAM), which drain quickly if not refreshed.
Option A (RAM), Option B (Cache), and Option D (Registers) are all examples of volatile semiconductor memory used for fast CPU data access.
C is correct тАФ A Hard Disk Drive is a non-volatile secondary storage device that retains information without a power supply.
In competitive exams, remember that any memory sitting close to the CPU (L1/L2/L3 cache, registers) is almost always volatile and fast, while storage media (HDD, SSD, Tape) are non-volatile and slower.