Question : 1 What is the main purpose of an operating system?

• A

  To provide a user interface for interacting with the computer

• B

  To manage hardware resources and provide services to applications

• C

  To run software applications on the computer

• D

  To provide security for the computer system

Question : 2 What is a process in the context of operating systems?

• A

  A program that is currently executing

• B

  A file system structure used to organize data

• C

  A peripheral device connected to the computer

• D

  A data structure used for communication between processes

Question : 3 What is virtual memory in operating systems?

• A

  A memory management technique that uses physical memory only

• B

  A memory management technique that allows processes to use more memory than is physically available

• C

  A type of memory used by virtual machines to store snapshots of the system state

• D

  A memory protection mechanism that prevents unauthorized access to memory locations

Question : 4 What is a thread in the context of operating systems?

• A

  A sequence of instructions executed by a processor

• B

  A data structure used for organizing files on disk

• C

  A lightweight process that shares the same address space with other threads within the same process

• D

  A mechanism for synchronizing access to shared resources between processes

Question : 5 What is a deadlock in operating systems?

• A

  A situation where a process is waiting indefinitely for a resource held by another process

• B

  A mechanism for preventing unauthorized access to memory locations

• C

  A type of error that occurs when a program attempts to access an invalid memory address

• D

  A condition where multiple processes are competing for the same CPU resource

Question : 6 What is the difference between multi-tasking and multi-processing?

• A

  Multitasking allows multiple processes to run concurrently on a single CPU, while multiprocessing involves multiple CPUs executing tasks simultaneously

• B

  Multitasking and multiprocessing are the same concepts with different names

• C

  Multitasking refers to the ability to switch between different tasks quickly, while multiprocessing refers to the ability to execute multiple tasks simultaneously

• D

  Multitasking is used in single-user systems, while multiprocessing is used in multi-user systems

Question : 7 What is the role of the scheduler in an operating system?

• A

  To allocate memory resources to running processes

• B

  To manage input and output devices

• C

  To control access to the CPU and decide which process to execute next

• D

  To manage the file system and organize files on disk

Question : 8 What is a file system in an operating system?

• A

  A mechanism for managing files and directories on disk

• B

  A process that manages communication between hardware devices and software applications

• C

  A protocol used for transferring files over a network

• D

  A set of instructions that tells the computer how to boot up and load the operating system

Question : 9 What is the purpose of device drivers in an operating system?

• A

  To manage memory resources and allocate space for running processes

• B

  To provide a user interface for interacting with the computer

• C

  To facilitate communication between the operating system and hardware devices

• D

  To control access to the CPU and decide which process to execute next

Question : 10 What is a shell in the context of operating systems?

• A

  A protective layer that prevents unauthorized access to system resources

• B

  A hardware component responsible for processing input and output operations

• C

  A command-line interface for interacting with the operating system

• D

  A file system structure used to organize data on disk

Question : 11 What is the difference between kernel mode and user mode in operating systems?

• A

  Kernel mode allows direct access to hardware resources, while user mode restricts access to only authorized operations

• B

  User mode provides higher privileges than kernel mode

• C

  Kernel mode is used for executing user applications, while user mode is used for executing system processes

• D

  Kernel mode is used for multitasking, while user mode is used for multiprocessing

Question : 12 What is the role of the interrupt handler in an operating system?

• A

  To manage input and output devices

• B

  To handle errors that occur during program execution

• C

  To respond to hardware interrupts and invoke the appropriate interrupt service routine

• D

  To allocate memory resources to running processes

Question : 13 What is the purpose of a page table in virtual memory management?

• A

  To store the contents of the CPU registers during context switching

• B

  To manage the allocation and deallocation of memory pages

• C

  To translate virtual addresses to physical addresses

• D

  To synchronize access to shared resources between processes

Question : 14 What is a deadlock in the context of operating systems?

• A

  A situation where a process is waiting indefinitely for a resource held by another process

• B

  A mechanism for preventing unauthorized access to memory locations

• C

  A type of error that occurs when a program attempts to access an invalid memory address

• D

  A condition where multiple processes are competing for the same CPU resource

Question : 15 What is the role of the file allocation table (FAT) in file systems?

• A

  To store the contents of files in a hierarchical structure

• B

  To manage access permissions for files and directories

• C

  To map file names to file data locations on disk

• D

  To manage the allocation and deallocation of disk blocks

Question : 16 What is context switching in operating systems?

• A

  Switching between different user interfaces

• B

  Changing from one type of file system to another

• C

  The process of saving the state of one process and loading the state of another

• D

  Switching between different network protocols

Question : 17 What is the function of the memory management unit (MMU)?

• A

  To manage the allocation of CPU resources

• B

  To translate virtual addresses to physical addresses

• C

  To manage input and output devices

• D

  To handle file system operations

Question : 18 What is the primary purpose of a bootloader?

• A

  To initialize hardware and load the operating system kernel into memory

• B

  To manage system updates and patches

• C

  To provide a graphical user interface for the operating system

• D

  To handle user login and authentication

Question : 19 What is the difference between paging and segmentation in memory management?

• A

  Paging divides memory into fixed-size pages, while segmentation divides memory into variable-size segments

• B

  Paging uses logical addresses, while segmentation uses physical addresses

• C

  Paging is used for managing disk storage, while segmentation is used for managing RAM

• D

  Paging requires hardware support, while segmentation does not