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Computer Science MCQs

MCQs on Programming, Networking, Database and OS

179 Questions Subject Test
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Filter: All Exams css pms fpsc ppsc nts | All Easy Medium Hard
21
Medium nts Uploaded: 23 Aug 2026

What is a computer network protocol?

  • A A database structure
  • B A type of hardware device
  • C A set of rules governing data communication
  • D A programming language
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22
Medium nts Uploaded: 13 Aug 2026

What is a compiler?

  • A A hardware device
  • B A program that translates source code into machine code
  • C A network device
  • D A type of database
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23
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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24
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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25
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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26
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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27
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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28
Hard nts Uploaded: 09 Aug 2026

What is the function of an operating system's kernel?

  • A Design user interfaces
  • B Store internet history
  • C Manage hardware resources directly
  • D Compress files
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29
Medium nts Uploaded: 13 Aug 2026

What is an array?

  • A A network device
  • B A single variable
  • C A type of loop
  • D A collection of elements of the same type stored in contiguous memory
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30
Medium nts Uploaded: 07 Aug 2026

What does the acronym 'RAM' NOT include?

  • A Volatility
  • B Permanent data storage
  • C Temporary data storage
  • D Fast access speed
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31
Hard nts Uploaded: 23 Aug 2026

What is the purpose of encryption?

  • A To increase network speed
  • B To compress files
  • C To convert data into a secure, unreadable format
  • D To delete data
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32
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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33
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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34
Medium nts Uploaded: 13 Aug 2026

Which programming paradigm treats computation as evaluation of functions?

  • A Object Oriented
  • B Functional Programming
  • C Procedural
  • D Logic Programming
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35
Medium css pms fpsc ppsc nts Uploaded: 01 Jul 2026

Which search algorithm explores all nodes one level at a time before moving to the next level?

  • A A* Search
  • B Depth-First Search (DFS)
  • C Breadth-First Search (BFS)
  • D Greedy Search
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36
Easy fpsc nts Uploaded: 20 Jun 2026

What is phishing?

  • A Programming method
  • B Data backup
  • C Fraudulent attempt to steal information
  • D Network topology
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37
Easy nts Uploaded: 09 Aug 2026

Which key is used to refresh a web page?

  • A F12
  • B F9
  • C F5
  • D F1
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38
Medium nts Uploaded: 23 Aug 2026

Who invented the World Wide Web?

  • A Mark Zuckerberg
  • B Steve Jobs
  • C Bill Gates
  • D Tim Berners-Lee
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39
Medium fpsc nts Uploaded: 20 Jun 2026

Which sorting algorithm repeatedly selects the smallest element and places it in the correct position?

  • A Merge Sort
  • B Quick Sort
  • C Selection Sort
  • D Heap Sort
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40
Hard nts Uploaded: 13 Aug 2026

What does the term 'plug and play' refer to in computing?

  • A Manual driver installation required
  • B A type of virus
  • C A network protocol
  • D Devices that work automatically when connected without manual setup
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