What is the smallest unit of data storage in a computer? MCQ with Answer and Explanation

What is the smallest unit of data storage in a computer?
A. Byte
B. Nibble
C. Kilobyte
D. Bit
Answer: Option D
Solution (By JKSSB Mock Tests)
A bit is the smallest unit of data in computing and can have a value of 0 or 1. A byte is 8 bits, a kilobyte is 1024 bytes, and a nibble is 4 bits.

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Practice More Memory and Storage Devices Questions

Question #1
Which of the following is a type of memory that is used for storing data in a portable gaming device?
A. Flash memory
B. RAM
C. Hard disk
D. ROM

Correct Answer: Option A


Explanation:
Portable gaming devices use flash memory for game cartridges and internal storage.

This question belongs to: Computer Memory and Storage Devices
Question #2
Which area of a mechanical hard drive contains the core initial master code used by a system BIOS to locate and launch the primary operating system partition?
A. Extended Partition Header
B. File Allocation Table (FAT)
C. Virtual Paging Index
D. Master Boot Record (MBR)

Correct Answer: Option D


Explanation:
The MBR (Master Boot Record) is the information located in the very first sector of a partitioned storage drive, containing the partition table and the bootloader code needed to start the OS.

This question belongs to: Computer Memory and Storage Devices
Question #3
Which of the following is a type of memory that is used for storing the system's configuration data?
A. SRAM
B. DRAM
C. CMOS
D. ROM

Correct Answer: Option C


Explanation:
CMOS memory stores system configuration parameters like date, time, and hardware settings. It is powered by a small battery.

This question belongs to: Computer Memory and Storage Devices