What is the purpose of a memory parity bit? MCQ with Answer and Explanation

Question
What is the purpose of a memory parity bit?
A. To encrypt data
B. To double the memory speed
C. To increase memory capacity
D. To detect errors in data storage or transmission
Answer: Option D
Solution (By JKSSB Mock Tests)
A parity bit is an extra bit added to data to detect errors (single-bit errors) in memory. It is used in some RAM modules for error detection.
This question belongs to: Computer Memory and Storage Devices
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Practice More Memory and Storage Devices Questions

Question #1
Which memory management technique allows a computer to use hard disk space as additional RAM?
A. Cache memory
B. Virtual memory
C. Paging
D. Segmentation
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Correct Answer: Option B

Explanation:
Virtual memory is a memory management technique that uses a portion of the hard disk or SSD as an extension of RAM, allowing the system to run larger applications or multiple programs simultaneously.
This question belongs to: Computer Memory and Storage Devices
Question #2
What is the purpose of a memory controller in a mobile device?
A. To manage the battery
B. To handle cellular signals
C. To manage the LPDDR memory
D. To control the display
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Correct Answer: Option C

Explanation:
In mobile devices, the memory controller manages the LPDDR (Low-Power DDR) memory, optimizing power consumption and performance.
This question belongs to: Computer Memory and Storage Devices
Question #3
Which of the following is a type of memory that has the fastest access time?
A. Registers
B. RAM
C. Hard disk
D. Cache memory
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Correct Answer: Option A

Explanation:
Registers have the fastest access time because they are inside the CPU, typically accessed in a single clock cycle.
This question belongs to: Computer Memory and Storage Devices
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