Operating Systems MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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What does ‘paging’ achieve in an operating system?
A. Divides memory into fixed-size blocks to manage it efficiently
B. Allocates disk space to files
C. Manages network connections
D. Optimizes CPU scheduling
Answer: Divides memory into fixed-size blocks to manage it efficiently
What is ‘file system’ in an operating system?
A. A method to organize and manage files on storage devices
B. A technique to optimize CPU performance
C. A structure for handling input and output operations
D. A system for managing network resources
Answer: A method to organize and manage files on storage devices
Which of the following is a characteristic of ‘multitasking’?
A. Running multiple processes simultaneously
B. Running a single process at a time
C. Managing hardware resources
D. Handling network communication
Answer: Running multiple processes simultaneously
What does ‘virtual memory’ provide to an operating system?
A. An illusion of more physical memory by using disk space
B. A method to manage physical memory more efficiently
C. A way to increase CPU speed
D. A technique to improve network performance
Answer: An illusion of more physical memory by using disk space
Which of the following describes ‘context switching’?
A. The process of saving the state of a currently running process and loading the state of another process
B. The transition between user mode and kernel mode
C. The process of handling interrupts
D. The allocation of CPU time to processes
Answer: The process of saving the state of a currently running process and loading the state of another process
What is the primary function of an operating system’s ‘shell’?
A. To provide an interface between the user and the operating system
B. To manage hardware resources
C. To execute applications
D. To handle system errors
Answer: To provide an interface between the user and the operating system
What is ‘memory fragmentation’?
A. A situation where free memory is split into small, non-contiguous blocks, making it difficult to allocate larger chunks
B. A technique for managing memory allocation
C. A method for optimizing process scheduling
D. An error in disk storage
Answer: A situation where free memory is split into small, non-contiguous blocks, making it difficult to allocate larger chunks
What is ‘thrashing’ in operating systems?
A. A condition where excessive paging or swapping occurs, leading to degraded performance
B. A method of optimizing memory allocation
C. A technique for handling I/O operations
D. An error in process scheduling
Answer: A condition where excessive paging or swapping occurs, leading to degraded performance
Which of the following is an example of a ‘virtual memory’ concept?
A. Paging
B. Disk Caching
C. Cache Memory
D. Registers
Answer: Paging