How many bits are there in a single byte of data? MCQ with Answer and Explanation

How many bits are there in a single byte of data?
A. 32 bits
B. 4 bits
C. 16 bits
D. 8 bits
Answer: Option D
Solution (By JKSSB Mock Tests)
By universal definition in computer architecture, one byte is comprised of exactly eight bits.

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Practice More Memory and Storage Devices Questions

Question #1
Which memory chip technology allows data blocks to be written and erased simultaneously using low-voltage electrical signals over standard circuit layouts?
A. UV-EPROM
B. Mask ROM
C. Flash Memory
D. Core Magnetic Grid

Correct Answer: Option C


Explanation:
Flash memory is an advanced form of EEPROM that allows multiple memory locations to be erased or written in one collective block operation using electrical currents.

This question belongs to: Computer Memory and Storage Devices
Question #2
Which architectural feature prevents a user from accidentally installing a DDR4 RAM module into a DDR5 motherboard slot?
A. A physically offset structural alignment notch
B. Color-coded connector pins
C. Magnetic resistance shields
D. An automatic software warning beep

Correct Answer: Option A


Explanation:
Each generation of DDR memory features a physical alignment notch carved into a unique position along the pin edge to prevent incompatible physical installation.

This question belongs to: Computer Memory and Storage Devices
Question #3
Which phenomenon occurs when a program continuously swaps pages between RAM and secondary storage due to inadequate primary memory space?
A. Fragmentation
B. Interleaving
C. Paging
D. Thrashing

Correct Answer: Option D


Explanation:
Thrashing occurs when the operating system spends more time moving system resources between virtual and physical memory than actually executing process instructions.

This question belongs to: Computer Memory and Storage Devices