What is the function of a memory buffer register (MBR)? MCQ with Answer and Explanation

Question
What is the function of a memory buffer register (MBR)?
A. To store the instruction
B. To manage cache
C. To hold the memory address
D. To hold data read from or written to memory
Answer: Option D
Solution (By JKSSB Mock Tests)
The MBR holds the data that is being transferred to or from memory, acting as an intermediate storage.
This question belongs to: Computer Memory and Storage Devices
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Practice More Memory and Storage Devices Questions

Question #1
Which of the following is true about DRAM?
A. It is non-volatile
B. It uses flip-flops to store data
C. It is slower than SRAM but cheaper
D. It is static and does not need refresh
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Correct Answer: Option C

Explanation:
DRAM is slower than SRAM because of refresh cycles, but it is cheaper and denser, making it suitable for main memory. It is volatile and uses capacitors.
This question belongs to: Computer Memory and Storage Devices
Question #2
Which of the following is a type of flash memory that is typically used in BIOS chips?
A. NAND
B. SRAM
C. NOR
D. DRAM
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Correct Answer: Option C

Explanation:
NOR flash is commonly used in BIOS chips due to its random-access capabilities and fast read speeds, allowing code execution directly from the chip.
This question belongs to: Computer Memory and Storage Devices
Question #3
What is the typical capacity of a CD-R in minutes of video (VCD)?
A. 80 minutes
B. 60 minutes
C. 120 minutes
D. 74 minutes
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Correct Answer: Option D

Explanation:
VCD (Video CD) typically holds about 74 minutes of video, but with compression it can vary. Standard CD capacity is 74 or 80 minutes of audio.
This question belongs to: Computer Memory and Storage Devices
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