What is the primary function of the Master Boot Record (MBR) on a storage drive? MCQ with Answer and Explanation

Question
What is the primary function of the Master Boot Record (MBR) on a storage drive?
A. To run continuous hardware diagnostics while applications are open.
B. To contain the initial boot sector code and partition table needed to locate and load the operating system.
C. To hold user profile pictures and account settings.
D. To manage real-time internet connections.
Answer: Option B
Solution (By JKSSB Mock Tests)
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
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Practice More Operating Systems Questions

Question #1
Which component of an operating system is responsible for managing the allocation and deallocation of main memory blocks to active applications?
A. Process Scheduler
B. I/O Spooler
C. Memory Manager
D. File System Manager
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Correct Answer: Option C

Explanation:
The memory management subsystem tracks memory allocation status, allocating chunks to active processes and reclaiming them upon task completion.
This question belongs to: Computer Operating Systems
Question #2
What type of operating system design runs a single application loop directly on hardware without processing delays, frequently used in automotive anti-lock brakes?
A. Real-Time Operating System (RTOS)
B. Time-Sharing Framework
C. Batch Processing OS
D. Network OS Shell
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Correct Answer: Option A

Explanation:
An RTOS provides deterministic response timing guarantees necessary for critical automation tasks like braking loops or medical telemetry.
This question belongs to: Computer Operating Systems
Question #3
In Windows, what is the maximum file size limit supported natively by the older FAT32 file system?
A. 2 GB
B. 4 GB
C. unlimited
D. 16 GB
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Correct Answer: Option B

Explanation:
The FAT32 file system carries a strict architectural limitation where single individual files cannot exceed 4 GB in size.
This question belongs to: Computer Operating Systems
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