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Computer Science MCQs

MCQs on Programming, Networking, Database and OS

198 Questions Subject Test
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61
Easy pms Uploaded: 07 Aug 2026

What is the purpose of the 'GROUP BY' clause in SQL?

  • A Create a new table
  • B Sort data alphabetically
  • C Delete duplicate rows
  • D Group rows sharing a property for aggregate functions
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62
Easy fpsc Uploaded: 23 Aug 2026

Which key combination is used to paste text in Windows?

  • A Ctrl+A
  • B Ctrl+V
  • C Ctrl+C
  • D Ctrl+X
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63
Easy css Uploaded: 13 Aug 2026

What is multitasking in an OS?

  • A Running one program at a time
  • B Formatting multiple disks
  • C Deleting multiple files
  • D Running multiple programs simultaneously
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64
Easy ppsc nts Uploaded: 18 Jun 2026

Which of the following is NOT an operating system?

  • A Windows 11
  • B Ubuntu Linux
  • C Microsoft Word
  • D macOS Ventura
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65
Easy pms Uploaded: 09 Aug 2026

Which of the following is a high-level programming language?

  • A Assembly
  • B Python
  • C Machine Code
  • D Binary
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66
Easy ppsc nts Uploaded: 20 Jun 2026

What is the primary function of an operating system?

  • A Create websites
  • B Manage hardware and software resources
  • C Compile programs
  • D Design databases
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67
Easy pms Uploaded: 23 Aug 2026

What is the function of an assembler?

  • A To interpret scripts
  • B To convert assembly language into machine code
  • C To compile high-level code
  • D To manage databases
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68
Easy pms Uploaded: 09 Aug 2026

Which of the following is an example of an open-source operating system?

  • A macOS
  • B iOS
  • C Linux
  • D Windows
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69
Easy css Uploaded: 23 Aug 2026

What is the function of DNS in networking?

  • A Compresses files
  • B Translates domain names into IP addresses
  • C Manages hardware
  • D Encrypts data
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70
Easy nts Uploaded: 20 Jun 2026

Which key combination cuts selected content?

  • A Ctrl+C
  • B Ctrl+V
  • C Ctrl+X
  • D Ctrl+Z
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71
Easy css Uploaded: 09 Aug 2026

Which of the following file extensions is used for Python files?

  • A .py
  • B .exe
  • C .html
  • D .java
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72
Easy css Uploaded: 07 Aug 2026

What is the purpose of a subnet mask in networking?

  • A Increase internet speed
  • B Store website content
  • C Divide an IP network into smaller sub-networks
  • D Encrypt data transmission
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73
Easy nts Uploaded: 23 Aug 2026

Which of the following is a type of computer virus that spreads without user action?

  • A Adware
  • B Spyware
  • C Trojan
  • D Worm
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74
Easy nts Uploaded: 09 Aug 2026

What does HTML stand for?

  • A Hyper Text Making Language
  • B High Text Markup Language
  • C Hyper Text Markup Language
  • D Hyper Trainer Markup Language
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75
Easy nts Uploaded: 13 Aug 2026

Which data structure uses FIFO (First In First Out)?

  • A Tree
  • B Queue
  • C Stack
  • D Graph
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76
Easy nts Uploaded: 13 Aug 2026

What does GPS stand for?

  • A Global Positioning System
  • B General Processing System
  • C Global Processing System
  • D General Positioning System
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77
Easy nts Uploaded: 20 Jun 2026

Which protocol is used for file transfer over a network?

  • A FTP
  • B HTTP
  • C SMTP
  • D POP3
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78
Easy ppsc Uploaded: 13 Aug 2026

Which type of software controls computer hardware directly?

  • A System Software
  • B Utility Software
  • C Freeware
  • D Application Software
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79
Easy css Uploaded: 23 Aug 2026

What is the function of a scanner?

  • A To connect to networks
  • B To print documents
  • C To store data permanently
  • D To convert physical documents into digital form
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80
Easy nts Uploaded: 20 Jun 2026

Which PowerPoint feature allows visual movement effects?

  • A Transitions
  • B Animations
  • C Themes
  • D Layouts
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