5/ Choice and use of operating systems

• What are some modern input devices for interaction?

  Mouse, keyboard, touchscreen, microphone, and camera.
• What are the operating system features that facilitate user interaction?


  Windows, icons, menus, and pointers.
• What are the types of user interfaces?

  • Graphical User Interface (GUI)
  • Command Line Interface (CLI)
  • Menu-Based Interface
  • Adaptive User Interface (AUI)
• What does a Graphical User Interface (GUI) use?


  Windows, icons, menus, and pointers (WIMP system).
• How does a Command Line Interface (CLI) operate?

  User types commands without graphics.
• What is a Menu-Based Interface?

  Users select options from menus.
• What is an Adaptive User Interface (AUI)?

  It changes based on user needs or device settings.
• What replaces the mouse and pointers in a mobile phone GUI?

  Touchscreen.
• How do gestures function in mobile phone GUIs?


  Gestures like zoom in/out replace clicks.
• What limitation do small screens impose on mobile phone GUIs?

  They limit the ability to show multiple windows.
• What is a requirement for menus in mobile phone GUIs?

  Menus need to be finger-friendly.
• What command is used in CLI to list files?

  ls
• What command is used in CLI to delete files?

  rm file
• What is an advantage of using a Command Line Interface (CLI)?

  It is fast for advanced users and uses low resources.
• What is a disadvantage of using a Command Line Interface (CLI)?

  Commands must be learned and it is not intuitive for beginners.
• What is a key advantage of a Menu-Based Interface?

  It is simple and intuitive for users who don't know commands.
• What is a disadvantage of a Menu-Based Interface?

  It is limited to available options and can be confusing with many sub-menus.
• How does an Adaptive User Interface (AUI) function in mobile apps?

  It adapts to screen size or user needs.
• What are some examples of desktop operating systems?


  Windows, MacOS, Linux, ChromeOS.
• What are some examples of mobile operating systems?

  Android, iOS.
• What considerations should be taken into account when choosing an operating system?

  • Software Availability: Some software is OS-specific.
  • Cost: Some OS are free, others require a license.
  • Usability: Important for productivity.
  • Security: Passwords, biometrics, encryption, antivirus, and secure connections.
• How does CPU performance affect operating system performance?

  Faster processors improve performance.
• How does memory (RAM) affect operating system performance?

  More RAM reduces slowdowns.
• How does storage type affect operating system performance?

  Solid-state drives (SSD) are faster than hard drives.
• How does internet speed affect operating system performance?

  It affects online tasks.
• How does a GPU improve operating system performance?

  It improves video and graphics performance.
• Which type of operating system is recommended for school work?

  Choose GUI for ease of use, graphical elements, and multitasking.
• Why should CLI be avoided for school work?

  It involves complex commands that can be confusing.
• Why should too many sub-menus be avoided for school work?

  They can be confusing for users.