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Computer Science MCQs

MCQs on Programming, Networking, Database and OS

198 Questions Subject Test
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21
Easy ppsc Uploaded: 13 Aug 2026

What is a database?

  • A A type of hardware
  • B An organized collection of data
  • C A programming language
  • D A network protocol
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22
Easy nts Uploaded: 20 Jun 2026

Which network device broadcasts data to all ports?

  • A Router
  • B Switch
  • C Hub
  • D Gateway
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23
Easy fpsc Uploaded: 07 Aug 2026

What does the term 'bit rate' refer to in digital media?

  • A The physical size of a file
  • B The amount of data processed per unit of time
  • C The color depth of an image
  • D The resolution of a monitor
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24
Easy nts Uploaded: 20 Jun 2026

Which key combination opens the Find dialog box in MS Word?

  • A Ctrl+H
  • B Ctrl+F
  • C Ctrl+N
  • D Ctrl+L
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25
Easy css Uploaded: 09 Aug 2026

Who is known as the father of computers?

  • A John von Neumann
  • B Charles Babbage
  • C Bill Gates
  • D Alan Turing
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26
Easy pms Uploaded: 07 Aug 2026

What is the primary difference between compiled and interpreted languages?

  • A Compiled languages translate entire code before execution; interpreted languages execute line by line
  • B Compiled languages are always slower
  • C Interpreted languages cannot handle loops
  • D Compiled languages do not require syntax
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27
Easy ppsc Uploaded: 07 Aug 2026

Which of the following is an input device?

  • A Monitor
  • B Printer
  • C Speaker
  • D Keyboard
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28
Easy fpsc Uploaded: 09 Aug 2026

Which of the following is a common cybersecurity practice?

  • A Ignoring software updates
  • B Using strong, unique passwords
  • C Disabling firewalls
  • D Sharing passwords openly
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29
Easy css Uploaded: 13 Aug 2026

Which MS Office application is used for spreadsheets?

  • A Excel
  • B Word
  • C Access
  • D PowerPoint
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30
Easy fpsc ppsc nts Uploaded: 18 Jun 2026

What does RAM stand for?

  • A Random Access Memory
  • B Read Access Memory
  • C Rapid Access Memory
  • D Random Application Memory
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31
Easy nts Uploaded: 20 Jun 2026

Which Excel function returns the highest value in a range?

  • A MIN()
  • B TOP()
  • C MAX()
  • D HIGH()
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32
Easy nts Uploaded: 09 Aug 2026

What is the shortcut key to copy in Windows?

  • A Ctrl+X
  • B Ctrl+C
  • C Ctrl+V
  • D Ctrl+Z
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33
Easy ppsc Uploaded: 13 Aug 2026

What does USB stand for?

  • A Universal Serial Bus
  • B United System Bus
  • C United Serial Bus
  • D Universal System Bus
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34
Easy ppsc Uploaded: 07 Aug 2026

What is the time complexity of binary search on a sorted array?

  • A O(log n)
  • B O(1)
  • C O(n)
  • D O(n^2)
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35
Easy ppsc nts Uploaded: 20 Jun 2026

Which SQL command is used to retrieve data from a database?

  • A INSERT
  • B UPDATE
  • C SELECT
  • D DELETE
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36
Easy ppsc nts Uploaded: 20 Jun 2026

Which Excel feature is used to display only records matching specific criteria?

  • A Sort
  • B Filter
  • C Freeze Panes
  • D Conditional Formatting
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37
Easy ppsc nts Uploaded: 20 Jun 2026

What is the default file extension of a Microsoft Word document in modern versions?

  • A .doc
  • B .txt
  • C .docx
  • D .rtf
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38
Easy nts Uploaded: 13 Aug 2026

What is the purpose of a JOIN in SQL?

  • A Delete records
  • B Backup data
  • C Create a database
  • D Combine rows from two or more tables
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39
Easy fpsc Uploaded: 23 Aug 2026

What is the function of a computer's power supply unit (PSU)?

  • A To store data
  • B To connect to networks
  • C To convert AC power to DC power for internal components
  • D To display graphics
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40
Easy ppsc Uploaded: 13 Aug 2026

What is debugging?

  • A Finding and fixing errors in code
  • B Designing a database
  • C Compiling a program
  • D Writing new code
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