How many bits are contained in a standard hexademical digit stored in computer memory? MCQ with Answer and Explanation

Question
How many bits are contained in a standard hexademical digit stored in computer memory?
A. 4 bits
B. 2 bits
C. 16 bits
D. 8 bits
Answer: Option A
Solution (By JKSSB Mock Tests)
A single hexadecimal character represents values from 0 to 15, which maps to a 4-bit binary sequence (a nibble).
This question belongs to: Computer Memory and Storage Devices
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Practice More Memory and Storage Devices Questions

Question #1
What does 'S' stand for in the context of SD cards used in smartphones and cameras?
A. Serial Digital
B. Static Digital
C. Speed Digital
D. Secure Digital
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Correct Answer: Option D

Explanation:
SD card stands for Secure Digital card, a proprietary non-volatile memory card format developed for portable devices.
This question belongs to: Computer Memory and Storage Devices
Question #2
Which of the following units is the largest in terms of data storage capacity?
A. Terabyte (TB)
B. Exabyte (EB)
C. Petabyte (PB)
D. Yottabyte (YB)
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Correct Answer: Option D

Explanation:
Among the options, Yottabyte (YB) is the largest. The order is Terabyte < Petabyte < Exabyte < Yottabyte.
This question belongs to: Computer Memory and Storage Devices
Question #3
Which memory location holds the specific CPU machine instruction that is currently being decoded and executed by the internal instruction logic?
A. The Program Counter
B. The Level 3 Cache
C. Instruction Register (IR)
D. Memory Address Register (MAR)
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Correct Answer: Option C

Explanation:
The Instruction Register (IR) is the dedicated high-speed storage location inside the CPU control unit that holds the binary instruction currently undergoing decoding and execution.
This question belongs to: Computer Memory and Storage Devices
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