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.
Test Helpful For:	ECAT Entry Test Computer Online Test Interview Questions about Computer All Universities Entrance Test Recruitments Tests

Windows Operating System Practice Test Online With Explanation

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

Write code

Play games

Configure system settings

Design websites

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

Multi-login

BIOS

User Accounts

Remote Desktop

3. What is the purpose of Disk Cleanup?

Removing unnecessary files to free up space

Updating drivers

Editing documents

Formatting drives

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

Microsoft Edge

Notepad

Paint

Excel

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

Start button

Power cable

Mouse pointer

Screen resolution

6. What does the Recycle Bin store?

Running processes

Installed programs

Deleted files temporarily

Downloaded files

7. Which Windows tool manages hardware devices?

System Restore

Disk Cleanup

Task Manager

Device Manager

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

Cortana

Calculator

Resource Monitor

Task Manager

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

Control hardware and manage software

Create websites

Scan documents

Play videos

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

Disk Cleanup

Sticky Notes

WinRAR

Windows Mail

11. Which tool helps manage partitions in Windows?

Notepad

Disk Management

Paint

Windows Store

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

Closes the current window

Locks the PC

Opens the Start Menu

Opens the Run Dialog

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

512

128

255

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

WordPad

Cortana

Defender

Task View

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

.xlsx

.docx

.ppt

.exe

16. Which shortcut minimizes all open windows?

Ctrl + N

Ctrl + M

Windows + D

Alt + Tab

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

Format

Registry Editor

System Restore

Reset This PC (Keep my files)

18. What does Windows Defender do?

Plays music

Protects the system from malware

Stores passwords

Updates software

19. What is the function of the Windows Registry?

Create backups

Manage Wi-Fi connections

Browse websites

Store system configuration and settings

20. Which shortcut locks a Windows computer?

Alt + F4

Ctrl + Alt + L

Windows + L

Ctrl + P

21. What does BitLocker do in Windows?

Clears junk files

Backs up files to OneDrive

Encrypts drives for data security

Restarts the computer

22. Which Windows utility helps schedule automatic tasks?

Event Viewer

Task Scheduler

Disk Cleanup

Resource Monitor

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

Windows + R

Alt + R

Ctrl + R

Shift + R

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

HFS+

FAT32

NTFS

EXT4

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

Activity Monitor

Finder

Terminal

Command Prompt

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

Paint

Task Manager

File Explorer

Command Prompt

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

Calculator

Notepad

Safari

Snipping Tool

28. What is the purpose of Windows Update?

Add new desktop wallpapers

Install security patches and feature updates

Manage network sharing

Change keyboard layout

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

Disk Management

Task Scheduler

System Restore

Windows Firewall

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

Task View

File Explorer

Windows Search

Aero Peek

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

Linux Mint

Ubuntu

Windows 10

Android

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

Touchscreen

Keyboard

Typewriter

Mouse

33. Which Windows feature allows switching between open applications?

Alt + Tab

File Explorer

Control Panel

Start Menu

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

shutdown /s

shutdown /r

shutdown /x

shutdown -h

35. Which utility checks and fixes file system errors?

Disk Defragmenter

Format Tool

Disk Cleanup

CHKDSK

36. Which of these is not a Windows version?

Windows Vista

Windows Alpha

Windows 7

Windows XP

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

Excel

Paint

WordPad

Notepad

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

F10

39. Which key opens the Start menu in Windows?

Windows key

Alt

Ctrl

Esc

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

To enable all services at once

To run games faster

To start Windows with minimal drivers for troubleshooting

To browse the internet safely

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

Windows 7

Windows 8.1

Windows 11

Windows 10

42. Which shortcut is used to open Task Manager?

Ctrl + Shift + Esc

Alt + Tab

Ctrl + A

Shift + Enter

43. What is File Explorer used for?

Editing images

Managing files and folders

Running antivirus scans

Browsing the internet

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

Device Manager

Sticky Notes

File Sharing

Windows Store

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

.mp3

.txt

.jpg

.exe

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

Action Center

Windows Hello

Cortana

Task View

47. What does the Windows Update feature typically install?

Antivirus from third-party vendors

Operating system patches and security updates

Video games

Movies

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

Device Manager

Program Manager

Apps & Features

Task Manager

49. Which company develops the Windows operating system?

Apple

Google

Microsoft

IBM

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

Notepad

Task Manager

Windows Explorer

Paint

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Mustansar KhanLast Updated: October 15, 2025

Important Computer Windows Operating System Question and Answer

Windows Operating System Practice Test Online With Explanation

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