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Computer Science MCQs

MCQs on Programming, Networking, Database and OS

198 Questions Subject Test
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161
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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162
Easy pms Uploaded: 09 Aug 2026

What is the purpose of an algorithm?

  • A Design graphics
  • B Provide step-by-step instructions to solve a problem
  • C Store data permanently
  • D Connect hardware
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163
Easy ppsc nts Uploaded: 20 Jun 2026

Which search algorithm checks each element sequentially?

  • A Binary Search
  • B Linear Search
  • C Interpolation Search
  • D Hash Search
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164
Easy nts Uploaded: 13 Aug 2026

What is the purpose of a 'patch' in software?

  • A Format a disk
  • B Create a backup
  • C Fix bugs or security vulnerabilities in software
  • D Add new hardware
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165
Easy fpsc Uploaded: 23 Aug 2026

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

  • A To manage network connections
  • B To store files
  • C To display graphics
  • D To determine which process runs on the CPU next
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166
Easy fpsc Uploaded: 13 Aug 2026

What is a DDoS attack?

  • A A programming technique
  • B An attack that overwhelms a system with traffic to disrupt service
  • C A backup method
  • D A type of encryption
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167
Easy fpsc Uploaded: 13 Aug 2026

Which storage device uses flash memory?

  • A Floppy Disk
  • B CD-ROM
  • C Solid State Drive
  • D Hard Disk Drive
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168
Easy fpsc Uploaded: 07 Aug 2026

Which data structure is most efficient for implementing a priority queue?

  • A Simple Linked List
  • B Stack
  • C Array
  • D Heap
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169
Easy pms Uploaded: 13 Aug 2026

Which of the following is a markup language, not a programming language?

  • A C++
  • B Python
  • C HTML
  • D Java
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170
Easy css Uploaded: 09 Aug 2026

What is the function of a web browser?

  • A Access and display web pages
  • B Compile code
  • C Store files permanently
  • D Manage hardware
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171
Easy pms Uploaded: 23 Aug 2026

What is application software?

  • A A hardware component
  • B Software that manages hardware
  • C Software designed to perform specific user tasks
  • D A type of network protocol
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172
Easy nts Uploaded: 20 Jun 2026

Which Excel symbol is used to begin a formula?

  • A #
  • B @
  • C =
  • D $
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173
Easy fpsc Uploaded: 13 Aug 2026

Which data structure uses LIFO (Last In First Out)?

  • A Array
  • B Linked List
  • C Queue
  • D Stack
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174
Easy nts Uploaded: 20 Jun 2026

Which Excel function returns the smallest value in a range?

  • A MAX()
  • B MIN()
  • C LOW()
  • D SMALL()
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175
Easy css Uploaded: 23 Aug 2026

Which key combination is used to undo an action?

  • A Ctrl+U
  • B Ctrl+Z
  • C Ctrl+X
  • D Ctrl+Y
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176
Easy fpsc Uploaded: 23 Aug 2026

What is a foreign key in a database?

  • A A field that must be unique
  • B A type of index
  • C A field that cannot contain data
  • D A field that links to the primary key of another table
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177
Easy nts Uploaded: 07 Aug 2026

Which key is used to delete a character to the left of the cursor?

  • A Backspace
  • B Enter
  • C Delete
  • D Tab
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178
Easy nts Uploaded: 09 Aug 2026

What is the purpose of a 'loop' in programming?

  • A Design interfaces
  • B Connect to internet
  • C Store data
  • D Repeat a block of code multiple times
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179
Easy fpsc ppsc nts Uploaded: 18 Jun 2026

What is the full form of HTML?

  • A Hyper Text Markup Language
  • B High Text Making Language
  • C Hyper Transfer Markup Language
  • D High Technology Markup Language
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180
Easy nts Uploaded: 20 Jun 2026

What does Ctrl+Home do in Excel?

  • A Go to first worksheet
  • B Go to cell A1
  • C Open Home tab
  • D Save workbook
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