All Free Computer Science and IT MCQs with Answers

41. Which shortcut key is used to open my computer properties?

• A. Win + Pause
• B. Win + Insert
• C. Wind + End
• D. Win + Tab

Explanation: Windows key + Pause opens the System or computer properties window in traditional Windows versions. The other combinations do not open system properties.

42. Which shortcut key is used to Open My Computer?

• A. Win + C
• B. Win + D
• C. Win + E
• D. Win + F

Explanation: Windows key + E opens File Explorer, traditionally called My Computer or Windows Explorer. Windows key + D shows the desktop, so it does not open the computer window directly.

43. Which shortcut key used to open Task Manager in windows 10?

• A. Ctrl + Esc
• B. WIN + Ctrl + Esc
• C. Alt + Esc
• D. Ctrl + Shift + Esc

Explanation: Ctrl+Shift+Esc opens Windows Task Manager directly, while Ctrl+Alt+Delete opens a security screen from which Task Manager can also be selected. The other shortcuts do not directly launch Task Manager.

44. Which shortcut key used to open startup button in windows 10?

• A. Ctrl + Esc
• B. WIN+ Esc
• C. Alt + Esc
• D. Shift + Esc

Explanation: Ctrl+Esc opens the Windows Start menu, which is what the question calls the startup button. The Windows key is the usual direct shortcut, but it is not listed among the options.

45. Which of these is the name of a type of interface that allows a user to type in commands on a keyboard which gives the computer instructions?

• A. Command line interface (CLI)
• B. Graphical user interface (GUI)
• C. Touchscreen interface
• D. Drop down menu interface

Explanation: A command-line interface accepts typed commands and returns text-based results. A GUI instead uses visual elements such as windows, icons and menus.

46. The unit that controls all parts of the computer is __________?

• A. CPU
• B. ALU
• C. Register
• D. None of these

Explanation: The CPU controls and coordinates the computer's operations by fetching and executing instructions. The ALU performs arithmetic and logical operations, so it is only one part of the CPU.

47. Microprocessor was introduced in which generation of computer?

• A. Second generation
• B. Third generation
• C. Fourth generation
• D. Fifth generation

Explanation: The fourth generation began with the microprocessor, which placed the CPU on a single integrated circuit. Earlier generations used transistors or larger integrated circuits rather than microprocessors.

48. Fifth generation computers are based on:____________?

• A. Programming Intelligence
• B. Artificial Intelligence
• C. System Knowledge
• D. None of these

Explanation: Fifth-generation computers are associated with artificial intelligence, including natural-language processing and knowledge-based systems. The other options are not the standard basis used to define this generation.

49. F1 through F 12 are called_________keys.

• A. Function
• B. Modifier
• C. Control
• D. None of the above

Explanation: F1 through F12 are function keys because their actions depend on the software being used. Modifier keys such as Ctrl and Shift change the effect of another key instead.

50. Ctrl, Shift, Alt and windows are called__________keys.

• A. Modifier
• B. Function
• C. Numeric
• D. Alphanumeric

Explanation: Ctrl, Shift, Alt and the Windows key modify the action of another key or key combination, so they are called modifier keys. They are not function or alphanumeric keys.