Here we have 50 multiple-choice questions (MCQs) about popular operating systems (Windows, macOS, and Linux) along with answers and explanations.

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1. Which Linux distribution is known for its use in scientific and research computing?

  • CentOS
  • Ubuntu
  • Fedora
  • Scientific Linux

2. What is the primary function of the Windows Action Center?

  • System configuration
  • Software installation
  • System notifications and maintenance
  • Disk cleanup

3. In macOS, what is the key combination for "Force Quit" when an application is unresponsive?

  • Ctrl + Alt + Del
  • Ctrl + Alt + Esc
  • Command + Option + Esc
  • Ctrl + Shift + Esc

4. Which Linux distribution is known for its use in gaming and multimedia?

  • CentOS
  • Ubuntu Studio
  • Fedora
  • Kali Linux

5. What is the default text editor in most Linux distributions?

  • Nano
  • Vim
  • Notepad++
  • Gedit

6. In Windows, what is the keyboard shortcut for opening the Task Manager?

  • Ctrl + Alt + Del
  • Ctrl + Shift + Esc
  • Alt + F4
  • Win + R

7. In macOS, what is the utility used to manage network connections?

  • Finder
  • Network Preferences
  • System Preferences
  • Network Manager

8. Which Linux distribution is known for

  • Ubuntu
  • Fedora
  • Kali Linux
  • Linux Mint

9. What is the primary function of the Windows Disk Cleanup utility?

  • System backup
  • Disk encryption
  • File compression
  • Disk space optimization

10. In macOS, what is the utility used to partition and format storage devices?

  • Finder
  • Disk Utility
  • System Preferences
  • Time Machine

11. What is the kernel of the Linux operating system responsible for?

  • User Interface
  • Hardware interaction
  • File management
  • Application execution

12. Which operating system is known for its open-source nature?

  • Windows
  • macOS
  • Linux
  • All of the above

13. Which of the following is not a version of Windows?

  • Windows 10
  • Windows XP
  • Windows Leopard
  • Windows 7

14. Which macOS version was codenamed "El Capitan"?

  • macOS Sierra
  • macOS Mojave
  • macOS Catalina
  • macOS Yosemite

15. Which command-line shell is commonly used in Linux?

  • CMD
  • PowerShell
  • Bash
  • Terminal

16. Which of the following is a proprietary operating system?

  • Windows
  • Ubuntu
  • Fedora
  • CentOS

17. What is the primary file system used in macOS?

  • NTFS
  • FAT32
  • HFS+
  • Ext4

18. Which Linux distribution is known for its use in servers and enterprise environments?

  • Ubuntu
  • Fedora
  • CentOS
  • Linux Mint

19. Which Windows version introduced the Start menu?

  • Windows 95
  • Windows XP
  • Windows 7
  • Windows 8

20. Which macOS feature allows you to run Windows applications on a Mac?

  • Boot Camp
  • Rosetta
  • Parallels Desktop
  • Time Machine

21. What is the default command-line shell in Windows?

  • CMD
  • PowerShell
  • Bash
  • Terminal

22. Which Linux distribution is known for its user-friendly interface and software center?

  • Arch Linux
  • Debian
  • Ubuntu
  • Fedora

23. Which operating system is not Unix-based?

  • Windows
  • macOS
  • Linux
  • FreeBSD

24. What is the package manager used in Ubuntu and Debian-based Linux distributions?

  • YUM
  • APT
  • Pacman
  • DNF

25. Which Windows version introduced the Aero Glass user interface?

  • Windows XP
  • Windows 7
  • Windows 8
  • Windows 10

26. What is the primary function of the Windows Registry?

  • File management
  • User authentication
  • System configuration settings storage
  • Virus protection

27. Which macOS feature allows you to switch between different desktops and applications?

  • Spotlight
  • Exposé
  • Mission Control
  • Time Machine

28. What is the primary advantage of using a 64-bit version of an operating system?

  • Faster boot times
  • Greater memory access
  • Smaller file sizes
  • Enhanced security

29. Which Linux distribution is known for its rolling release model?

  • CentOS
  • Fedora
  • Arch Linux
  • Ubuntu

30. What is the default file system used in most Windows installations?

  • FAT32
  • NTFS
  • exFAT
  • FAT16

31. Which macOS version introduced the "Dark Mode" feature?

  • macOS Sierra
  • macOS Mojave
  • macOS Catalina
  • macOS Big Sur

32. Which Linux distribution is known for its focus on security and privacy?

  • Kali Linux
  • Ubuntu
  • Fedora
  • Linux Mint

33. What is the primary function of the Windows Task Manager?

  • File management
  • System configuration
  • Process and resource management
  • Disk cleanup

34. What is the primary function of the Windows Control Panel?

  • Hardware management
  • Software installation
  • System configuration
  • User authentication

35. Which macOS feature allows you to organize and search for files and applications?

  • Finder
  • Dock
  • Launchpad
  • Quick Look

36. In Linux, what is the purpose of the sudo command?

  • Launching graphical applications
  • Creating new user accounts
  • Running commands with elevated privileges
  • Changing the desktop wallpaper

37. Which Windows version introduced the Windows Store for downloading and installing applications?

  • Windows 7
  • Windows 8
  • Windows 10
  • Windows XP

38. What is the primary function of the macOS Time Machine feature?

  • System backup and restore
  • Virus protection
  • File encryption
  • Disk cleanup

39. Which Linux distribution is known for its use in embedded systems and IoT devices?

  • CentOS
  • Raspbian
  • Ubuntu
  • Debian

40. What is the primary purpose of the Windows Task Scheduler?

  • System monitoring
  • Task automation
  • Disk cleanup
  • Virus scanning

41. Which macOS version introduced the "Gatekeeper" security feature?

  • macOS Sierra
  • macOS Mojave
  • macOS Catalina
  • macOS Big Sur

42. Which Linux command is used to list files and directories in the current directory?

  • cd
  • ls
  • mkdir
  • rm

43. What is the default web browser in Windows operating systems?

  • Mozilla Firefox
  • Google Chrome
  • Internet Explorer
  • Microsoft Edge

44. In macOS, what is the keyboard shortcut for taking a screenshot?

  • Ctrl + S
  • Shift + P
  • Command + Shift + 4
  • Alt + Print Screen

45. Which Linux distribution is known for its minimalism and DIY approach?

  • Ubuntu
  • Fedora
  • Arch Linux
  • Linux Mint

46. What is the primary purpose of the Windows Event Viewer?

  • Web browsing
  • System monitoring and logging
  • File management
  • Software installation

47. In macOS, what is the equivalent of the Windows "Taskbar"?

  • Dock
  • Finder
  • Launchpad
  • Spotlight

48. Which Linux command is used to change file permissions?

  • chmod
  • chown
  • ls
  • cat

49. Which Windows version introduced the "Cortana" virtual assistant?

  • Windows XP
  • Windows 7
  • Windows 8
  • Windows 10

50. In macOS, what is the utility used to create and manage compressed archive files?

  • Terminal
  • Finder
  • Disk Utility
  • Archive Manager

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