What does the acronym BIOS stand for? MCQ with Answer and Explanation

Question
What does the acronym BIOS stand for?
A. Basic Input Output System
B. Binary Integrated Operating System
C. Boot Initialization Operating System
D. Basic Internal Operating Software
Answer: Option A
Solution (By JKSSB Mock Tests)
BIOS stands for Basic Input Output System, firmware that initializes hardware during booting and provides runtime services.
This question belongs to: Computer Operating Systems
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Practice More Operating Systems Questions

Question #1
Which of the following is a type of multiprocessing where each processor runs its own copy of the OS?
A. Asymmetric multiprocessing
B. Symmetric clustering
C. Distributed processing
D. Symmetric multiprocessing
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Correct Answer: Option A

Explanation:
In asymmetric multiprocessing, a master processor runs the OS and allocates tasks to slave processors; each may have its own OS.
This question belongs to: Computer Operating Systems
Question #2
What is the primary function of the Master Boot Record (MBR) on a storage drive?
A. To hold user profile pictures and account settings.
B. To contain the initial boot sector code and partition table needed to locate and load the operating system.
C. To manage real-time internet connections.
D. To run continuous hardware diagnostics while applications are open.
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Correct Answer: Option B

Explanation:
The MBR is the first sector of a partitioned storage device that contains the boot loader code and the partition table layout.
This question belongs to: Computer Operating Systems
Question #3
What mechanism does an OS use to instantly notify the CPU that an event requiring immediate attention has occurred?
A. Thread
B. Interrupt
C. Spooling
D. System Call
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Correct Answer: Option B

Explanation:
An interrupt is a hardware or software signal sent to the CPU, causing it to temporarily suspend current tasks to execute an Interrupt Service Routine (ISR).
This question belongs to: Computer Operating Systems
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