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Computer Science MCQs

MCQs on Programming, Networking, Database and OS

601 Questions Subject Test
Subject Preparation Guide

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Strengthen your knowledge of computer fundamentals, hardware, software, programming, networks, databases and information technology.

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481
Medium css Uploaded: 23 Aug 2026

Which of the following best defines a computer network?

  • A A collection of interconnected computing devices
  • B A single standalone computer
  • C A programming language
  • D A type of software application
482
Medium css fpsc Uploaded: 20 Jun 2026

Which layer of OSI handles physical transmission of bits?

  • A Network
  • B Transport
  • C Physical
  • D Session
483
Easy fpsc Uploaded: 09 Aug 2026

What is the full form of PDF?

  • A Printable Document Format
  • B Personal Document File
  • C Portable Document Format
  • D Portable Data File
484
Easy nts Uploaded: 13 Aug 2026

What is an entity in a database context?

  • A A software bug
  • B A real-world object or concept represented in a database
  • C A network device
  • D A type of query
485
Medium ppsc Uploaded: 07 Aug 2026

Which of the following best describes 'recursion' in programming?

  • A A type of variable declaration
  • B A method of sorting arrays
  • C A function calling itself to solve a smaller instance of a problem
  • D A loop that never terminates
486
Hard pms Uploaded: 23 Aug 2026

Which of the following is a popular cloud service provider?

  • A Notepad
  • B VLC Media Player
  • C Amazon Web Services
  • D MS Paint
487
Medium css fpsc Uploaded: 20 Jun 2026

Which OSI layer is responsible for end-to-end communication?

  • A Network Layer
  • B Data Link Layer
  • C Transport Layer
  • D Session Layer
488
Hard pms Uploaded: 13 Aug 2026

What is the primary purpose of an operating system's process scheduler?

  • A Design user interfaces
  • B Manage network connections
  • C Decide which process runs on the CPU at a given time
  • D Manage file storage
489
Hard pms Uploaded: 23 Aug 2026

What is the function of Task Manager in Windows?

  • A To edit documents
  • B To browse the internet
  • C To scan for viruses
  • D To monitor and manage running processes
490
Medium pms Uploaded: 07 Aug 2026

The smallest unit of data in a computer is called?

  • A Nibble
  • B Bit
  • C Byte
  • D Word
491
Hard nts Uploaded: 09 Aug 2026

Which of the following is a function of the transport layer in networking?

  • A Displaying web pages
  • B Routing packets
  • C Ensuring reliable data transfer
  • D Physical cabling
492
Easy pms Uploaded: 13 Aug 2026

Which company owns Android OS?

  • A Amazon
  • B Apple
  • C Google
  • D Microsoft
493
Easy pms Uploaded: 07 Aug 2026

What does 'plug and play' mean in computer hardware?

  • A Devices requiring manual driver installation
  • B Devices that cannot be removed once installed
  • C Devices that only work with specific software
  • D Devices that work automatically once connected
494
Hard fpsc Uploaded: 23 Aug 2026

What is IPv4?

  • A A programming language
  • B A database system
  • C A type of malware
  • D A version of Internet Protocol using 32-bit addresses
495
Medium fpsc ppsc Uploaded: 20 Jun 2026

What is Track Changes used for in Word?

  • A Database management
  • B Reviewing edits
  • C Creating charts
  • D Printing documents
496
Hard ppsc Uploaded: 13 Aug 2026

Which of the following is an example of an embedded system?

  • A Web server
  • B Cloud storage
  • C Desktop computer
  • D Digital wristwatch with a microcontroller
497
Easy pms Uploaded: 13 Aug 2026

Which file format is commonly used for saving images with transparency?

  • A BMP
  • B PNG
  • C DOC
  • D JPEG
498
Easy fpsc Uploaded: 07 Aug 2026

What does HTTP stand for?

  • A HyperText Technical Protocol
  • B High Transfer Text Protocol
  • C HyperText Transmission Protocol
  • D HyperText Transfer Protocol
499
Medium ppsc Uploaded: 23 Aug 2026

Which language is primarily used for styling web pages?

  • A SQL
  • B CSS
  • C Python
  • D HTML
500
Easy nts Uploaded: 13 Aug 2026

Which is an example of open-source operating system?

  • A macOS
  • B Windows
  • C iOS
  • D Linux
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