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Computer Windows Operating System Test Online

Mustansar KhanLast Updated: October 15, 2025

Important Computer Windows Operating System Question and Answer

Total Questions:	50
Time Allowed:	25 Minutes
Total Marks:	50
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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Windows Operating System Practice Test Online With Explanation

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1. Which company develops the Windows operating system?

Apple

Google

IBM

Microsoft

2. Which key opens the Start menu in Windows?

Esc

Alt

Windows key

Ctrl

3. Which of the following is used to manage files and folders graphically in Windows?

Task Manager

Paint

Command Prompt

File Explorer

4. Which tool shows the system's performance and running processes?

Notepad

Windows Explorer

Paint

Task Manager

5. Which application is used for writing and saving basic text files?

Paint

Excel

WordPad

Notepad

6. What is the maximum character length allowed in a Windows file name?

255

512

128

7. Which shortcut is used to open Task Manager?

Ctrl + Shift + Esc

Alt + Tab

Ctrl + A

Shift + Enter

8. Which tool helps manage partitions in Windows?

Notepad

Disk Management

Windows Store

Paint

9. What does the Windows Update feature typically install?

Movies

Video games

Operating system patches and security updates

Antivirus from third-party vendors

10. What is the command to shut down the computer via Run dialog?

shutdown /s

shutdown -h

shutdown /r

shutdown /x

11. What does BitLocker do in Windows?

Clears junk files

Backs up files to OneDrive

Restarts the computer

Encrypts drives for data security

12. Which of these is not a Windows version?

Windows 7

Windows Alpha

Windows Vista

Windows XP

13. Which utility checks and fixes file system errors?

CHKDSK

Disk Defragmenter

Disk Cleanup

Format Tool

14. What is the Windows command-line tool called?

Command Prompt

Terminal

Activity Monitor

Finder

15. Which Windows feature allows switching between open applications?

Alt + Tab

Control Panel

Start Menu

File Explorer

16. Which of the following extensions indicates an executable file?

.exe

.jpg

.txt

.mp3

17. What is the purpose of Windows Update?

Add new desktop wallpapers

Change keyboard layout

Manage network sharing

Install security patches and feature updates

18. Which of the following is not an input method supported by Windows?

Touchscreen

Keyboard

Typewriter

Mouse

19. Which shortcut minimizes all open windows?

Alt + Tab

Ctrl + N

Windows + D

Ctrl + M

20. Which shortcut locks a Windows computer?

Ctrl + P

Windows + L

Alt + F4

Ctrl + Alt + L

21. Which Windows utility helps schedule automatic tasks?

Event Viewer

Resource Monitor

Task Scheduler

Disk Cleanup

22. Which feature lets users recover their system without affecting personal files?

Registry Editor

Format

Reset This PC (Keep my files)

System Restore

23. Which shortcut is used to open the Run dialog box?

Windows + R

Ctrl + R

Shift + R

Alt + R

24. What is the name of the Windows feature that allows you to view and switch between virtual desktops?

Task View

Windows Search

Aero Peek

File Explorer

25. Which file extension is associated with Microsoft Word documents?

.exe

.ppt

.docx

.xlsx

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26. Which tool in Windows allows users to install and uninstall programs?

Device Manager

Program Manager

Apps & Features

Task Manager

27. What is the primary function of an operating system?

Play videos

Scan documents

Control hardware and manage software

Create websites

28. Which utility in Windows restores system settings to a previous state?

Windows Firewall

Task Scheduler

System Restore

Disk Management

29. What does Windows Defender do?

Plays music

Stores passwords

Protects the system from malware

Updates software

30. What is the purpose of Disk Cleanup?

Removing unnecessary files to free up space

Editing documents

Updating drivers

Formatting drives

31. What is the purpose of Safe Mode in Windows?

To enable all services at once

To start Windows with minimal drivers for troubleshooting

To run games faster

To browse the internet safely

32. Which feature allows multiple users on one Windows PC?

Multi-login

Remote Desktop

User Accounts

BIOS

33. What does the Control Panel allow users to do?

Configure system settings

Play games

Design websites

Write code

34. What happens when you press Alt + F4 in Windows?

Closes the current window

Opens the Run Dialog

Opens the Start Menu

Locks the PC

35. Which of these is used to compress files in Windows?

Sticky Notes

Windows Mail

WinRAR

Disk Cleanup

36. Which of the following is the latest major version of Windows as of 2023?

Windows 8.1

Windows 10

Windows 11

Windows 7

37. Which Windows feature allows sharing files between devices on a network?

Device Manager

File Sharing

Windows Store

Sticky Notes

38. Which of the following is not a Windows accessory?

Snipping Tool

Calculator

Notepad

Safari

39. Which function key is used to rename a selected item in Windows?

F10

40. Which Windows tool manages hardware devices?

System Restore

Device Manager

Task Manager

Disk Cleanup

41. Which of the following is a Windows operating system?

Linux Mint

Windows 10

Android

Ubuntu

42. Which application is used to browse the internet in Windows?

Excel

Paint

Notepad

Microsoft Edge

43. What is the default file system used in Windows 10?

HFS+

FAT32

NTFS

EXT4

44. Which of these is a built-in calculator tool in Windows?

Resource Monitor

Calculator

Task Manager

Cortana

45. What does the Recycle Bin store?

Deleted files temporarily

Running processes

Installed programs

Downloaded files

46. Which of the following allows voice commands and assistant features in Windows?

Cortana

Defender

WordPad

Task View

47. Which of the following is found in the Windows taskbar?

Power cable

Screen resolution

Start button

Mouse pointer

48. Which of the following is a security feature in Windows?

Task View

Cortana

Windows Hello

Action Center

49. What is File Explorer used for?

Browsing the internet

Managing files and folders

Running antivirus scans

Editing images

50. What is the function of the Windows Registry?

Store system configuration and settings

Manage Wi-Fi connections

Create backups

Browse websites

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Mustansar KhanLast Updated: October 15, 2025

Computer Windows Operating System Test Online

Important Computer Windows Operating System Question and Answer

Windows Operating System Practice Test Online With Explanation

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