Q1. Which specific component of the Operating System is responsible for managing the CPU's time and deciding which process runs next?

A) File Manager

B) Device Driver

C) Scheduler

D) Compiler

E) Linker

Answer: C

 

Q2. "Spooling" (Simultaneous Peripheral Operations On-Line) is most commonly used for:

A) Logic processing.

B) Managing printer jobs (queueing them so the CPU can work on other things).

C) Internet browsing.

D) Video editing.

E) Virus scanning.

Answer: B

 

Q3. The first screen that appears after the computer is switched on and the OS loads is called the:

A) Window

B) Desktop

C) Screen Saver

D) File Manager

E) Background

Answer: B

 

Q4. Which of the following is an example of "Open Source" Operating System?

A) MS-DOS

B) Windows 10

C) Linux

D) macOS

E) iOS

Answer: C

 

Q5. What is the main difference between "Source Code" and "Object Code"?

A) Source Code is written by humans; Object Code is machine-readable (binary).

B) Object Code is written by humans; Source Code is binary.

C) Source Code is for Linux; Object Code is for Windows.

D) Source Code is shorter.

E) There is no difference.

Answer: A

 

Q6. Which type of software is "MS Excel"?

A) System Software

B) Application Software (Spreadsheet)

C) Utility Software

D) Firmware

E) Malware

Answer: B

 

Q7. "BIOS" (Basic Input Output System) is an example of:

A) Application Software

B) Firmware

C) Freeware

D) Shareware

E) Liveware

Answer: B

 

Q8. Which utility software is used to reduce the size of files to save disk space?

A) Antivirus

B) File Manager

C) Compression Tool (e.g., WinZip, WinRAR)

D) Defragmenter

E) Scheduler

Answer: C

 

Q9. The process of modifying a program to remove errors (bugs) is called:

A) Compiling

B) Debugging

C) Decoding

D) Encoding

E) Assembling

Answer: B

 

Q10. "Multitasking" in an OS means:

A) Multiple users using one computer.

B) One user executing multiple tasks (programs) concurrently.

C) Connecting multiple printers.

D) Using multiple monitors.

E) Using a multi-core processor only.

Answer: B

 

Q11. Which term describes the situation where the OS spends more time paging (swapping data) than executing the actual program?

A) Deadlock

B) Thrashing

C) Crash

D) Spooling

E) Multiprocessing

Answer: B

 

Q12. "Fragmentation" of a hard disk results in:

A) Faster performance.

B) Slower access time because files are scattered.

C) More storage space.

D) Better security.

E) Virus infection.

Answer: B

 

Q13. "Disk Defragmenter" is a tool used to:

A) Delete files.

B) Rearrange scattered file fragments into contiguous blocks to speed up access.

C) Format the disk.

D) Compress files.

E) Scan for viruses.

Answer: B

 

Q14. Which specific type of OS is designed to respond to events within a strict time limit (e.g., Air Traffic Control, Airbags)?

A) Batch OS

B) Time-Sharing OS

C) Real-Time Operating System (RTOS)

D) Distributed OS

E) Network OS

Answer: C

 

Q15. The "Kernel" is:

A) The outer shell of the OS.

B) The core component of the OS that manages system resources and hardware.

C) A type of corn.

D) A virus.

E) A user application.

Answer: B

 

Q16. "GUI" stands for:

A) Graphical User Interface

B) Global User Interface

C) General Utility Interface

D) Graphical Utility Icon

E) Guide User Interface

Answer: A

 

Q17. Which interface requires the user to type text commands (e.g., dir, cd)?

A) GUI

B) CLI (Command Line Interface) / CUI

C) Touch Interface

D) Voice Interface

E) Sensor Interface

Answer: B

 

Q18. "Device Drivers" are:

A) Hardware components.

B) People who drive cars.

C) Small programs that allow the OS to communicate with specific hardware (like a printer or graphics card).

D) Viruses.

E) Web browsers.

Answer: C

 

Q19. Which of the following is NOT an Operating System?

A) Android

B) Oracle

C) Ubuntu

D) Solaris

E) Unix

Answer: B (Oracle is primarily a DBMS company).

 

Q20. "Plug and Play" requires support from:

A) Hardware only.

B) OS only.

C) Both Hardware and OS (and BIOS).

D) Internet connection.

E) Power supply.

Answer: C

 

Q21. The file extension .apk belongs to which OS?

A) Windows

B) iOS

C) Android

D) Linux

E) BlackBerry

Answer: C

 

Q22. "Shareware" allows users to:

A) Sell the software.

B) Try the software for free for a limited time before buying.

C) Modify the source code.

D) Use it forever for free.

E) Share hardware.

Answer: B

 

Q23. "Freeware" allows users to:

A) Use it for free, but does NOT provide the source code for modification.

B) Sell it.

C) Modify the kernel.

D) Own the copyright.

E) None of the above.

Answer: A

 

Q24. A "Linker" program:

A) Connects to the internet.

B) Links/Combines object files and libraries into a single executable file.

C) Translates code.

D) Debugs code.

E) Deletes files.

Answer: B

 

Q25. "Virtual Memory" is actually:

A) RAM.

B) Cache.

C) Space on the Hard Disk used to simulate extra RAM.

D) Cloud storage.

E) ROM.

Answer: C

 

Q26. Which OS was developed by Bell Labs in the 1970s and written in C language?

A) Windows

B) Unix

C) DOS

D) Android

E) macOS

Answer: B

 

Q27. The shortcut Alt + F4 in Windows is used to:

A) Open Help.

B) Close the active window/application.

C) Refresh.

D) Rename.

E) Search.

Answer: B

 

Q28. "Warm Boot" involves:

A) Turning on the power from off state.

B) Restarting the computer while it is already on.

C) Heating the computer.

D) Booting in safe mode.

E) Shutting down.

Answer: B

 

Q29. "Safe Mode" in Windows is used for:

A) Gaming.

B) Troubleshooting (loads only essential drivers).

C) Internet browsing.

D) Watching movies.

E) High performance.

Answer: B

 

Q30. Which of the following is a Mobile OS developed by Apple?

A) Android

B) iOS

C) Windows Phone

D) Symbian

E) BlackBerry OS

Answer: B

 

Q31. "Beta Version" of software refers to:

A) The final version.

B) A pre-release version given to users for testing bugs.

C) An old version.

D) A virus.

E) A paid version.

Answer: B

 

Q32. "FAT32" and "NTFS" are types of:

A) File Systems

B) Processors

C) Monitors

D) Viruses

E) Networks

Answer: A

 

Q33. A "Deadlock" situation occurs when:

A) The system is off.

B) Two or more processes are waiting for each other to release resources, resulting in no progress.

C) The battery is dead.

D) The printer is out of paper.

E) The mouse is disconnected.

Answer: B

 

Q34. "POST" stands for:

A) Power On Self Test

B) Program On Self Test

C) Power Of System Test

D) Pre-Operating System Test

E) Power On System Test

Answer: A

 

Q35. Which specific program loads the Operating System from disk to memory during booting?

A) Compiler

B) Loader / Bootstrap Loader

C) Linker

D) Editor

E) Scheduler

Answer: B

 

Q36. The "Registry" in Windows is:

A) A list of users.

B) A central hierarchical database used to store configuration settings and options.

C) A text file.

D) A web browser.

E) An antivirus.

Answer: B

 

Q37. Which key combination opens the "Task Manager" directly in Windows?

A) Ctrl + Alt + Del

B) Ctrl + Shift + Esc

C) Alt + Tab

D) Windows + T

E) F5

Answer: B (Ctrl+Alt+Del opens a menu first; Ctrl+Shift+Esc opens Task Manager directly).

 

Q38. "Ubuntu", "Fedora", and "Debian" are distributions (distros) of:

A) Windows

B) Linux

C) macOS

D) Unix

E) DOS

Answer: B

 

Q39. What is the maximum number of characters allowed in a file name in modern Windows (NTFS)?

A) 8

B) 255

C) 128

D) 64

E) Unlimited

Answer: B

 

Q40. "Recycle Bin" stores deleted files until:

A) The computer is turned off.

B) The user manually empties it or restores them.

C) 24 hours.

D) A virus attacks.

E) Forever.

Answer: B

 

Q41. Which command is used to check the IP address in Windows Command Prompt?

A) ifconfig

B) ipconfig

C) showip

D) netstat

E) ping

Answer: B

 

Q42. A "Patch" is:

A) A complete new software.

B) A small piece of software designed to fix problems (bugs) or update a computer program.

C) A virus.

D) A hardware tool.

E) A manual.

Answer: B

 

Q43. "Utility Software" examples include:

A) Word, Excel.

B) Windows, Linux.

C) Antivirus, Disk Cleanup, Backup software.

D) Games.

E) Browsers.

Answer: C

 

Q44. Which OS was the first to use a true GUI?

A) Windows 1.0

B) Xerox Alto (Star OS)

C) Macintosh

D) DOS

E) Linux

Answer: B (Later popularized by Apple).

 

Q45. "Command Prompt" (cmd.exe) is an example of:

A) GUI

B) CLI (Command Line Interface)

C) Menu Driven Interface

D) Touch Interface

E) Voice Interface

Answer: B

 

Q46. "Cold Booting" is effectively:

A) Restarting via Ctrl+Alt+Del.

B) Switching on the PC from a completely powered-off state.

C) Putting it to sleep.

D) Hibernating.

E) Cooling it down.

Answer: B

 

Q47. "Context Switching" happens in:

A) RAM

B) CPU (Switching between processes)

C) Hard Disk

D) Monitor

E) Printer

Answer: B

 

Q48. Which scheduling algorithm gives every process an equal slice of CPU time?

A) First Come First Serve (FCFS)

B) Shortest Job First (SJF)

C) Round Robin (RR)

D) Priority

E) None

Answer: C

 

Q49. "Swapping" is the process of:

A) Exchanging hardware.

B) Moving a process from Main Memory (RAM) to Secondary Storage (Disk) and vice versa.

C) Changing passwords.

D) Switching users.

E) Trading computers.

Answer: B

 

Q50. The "Clipboard" is a temporary storage area used for:

A) Deleted files.

B) Cut/Copied data.

C) Printed documents.

D) Downloaded files.

E) Emails.

Answer: B

 

Q51. Which shortcut locks the Windows computer?

A) Ctrl + L

B) Windows Key + L

C) Alt + L

D) Shift + L

E) F12

Answer: B

 

Q52. The core of the Linux OS is called:

A) Shell

B) Kernel

C) Terminal

D) GNOME

E) Root

Answer: B

 

Q53. "Hibernation" mode saves the current state to:

A) RAM (and keeps power on).

B) Hard Disk (and turns power off completely).

C) Cloud.

D) Cache.

E) Nowhere.

Answer: B (Sleep saves to RAM; Hibernate saves to Disk).

 

Q54. Which software translates High-Level Language to Machine Language line-by-line?

A) Compiler

B) Interpreter

C) Assembler

D) Linker

E) Loader

Answer: B

 

Q55. "Bloatware" refers to:

A) Large hardware.

B) Unwanted/Unnecessary software pre-installed on a new computer.

C) A virus.

D) Fast software.

E) Essential drivers.

Answer: B

 

Q56. What does the Ctrl + Z shortcut do?

A) Redo

B) Undo

C) Cut

D) Paste

E) Delete

Answer: B

 

Q57. Which specific OS is owned by Google and based on the Linux kernel?

A) iOS

B) Android

C) Windows Mobile

D) BlackBerry

E) Symbian

Answer: B

 

Q58. "Root" user in Linux/Unix is equivalent to:

A) Guest

B) Standard User

C) Administrator (Superuser)

D) Hacker

E) Developer

Answer: C

 

Q59. Which type of software is "Google Chrome"?

A) System Software

B) Application Software (Web Browser)

C) Utility

D) OS

E) Firmware

Answer: B

 

Q60. "WYSIWYG" stands for:

A) What You See Is What You Get

B) Where You See Is Where You Go

C) What You Say Is What You Get

D) When You See Is When You Get

E) Why You See Is Why You Go

Answer: A (Refers to editors like Word where the screen matches the print).