In a computer system, where is the BIOS (Basic Input/Output System) firmware permanently stored? MCQ with Answer and Explanation

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In a computer system, where is the BIOS (Basic Input/Output System) firmware permanently stored?

A. RAM

B. Hard Disk Drive

C. Cache Memory

D. ROM Chip

Answer: Option D

Solution (By JKSSB Mock Tests)

The BIOS firmware is stored on a non-volatile ROM or flash memory chip on the motherboard to ensure it is always available during the boot process.

This question belongs to: Computer Memory and Storage Devices

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Question #1

What is the function of a memory buffer register (MBR)?

A. To hold data read from or written to memory

B. To store the instruction

C. To hold the memory address

D. To manage cache

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Correct Answer: Option A

Explanation:
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

Question #2

What is the typical capacity of a CD-ROM in minutes of audio?

A. 60 minutes

B. 80 minutes

C. 90 minutes

D. 74 minutes

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Correct Answer: Option B

Explanation:
Standard CD-ROM holds 80 minutes of audio (or 700 MB), though earlier ones held 74 minutes (650 MB).

This question belongs to: Computer Memory and Storage Devices

Question #3

Which architectural feature prevents a user from accidentally installing a DDR4 RAM module into a DDR5 motherboard slot?

A. Color-coded connector pins

B. An automatic software warning beep

C. A physically offset structural alignment notch

D. Magnetic resistance shields

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Correct Answer: Option C

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

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