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Computer Science MCQs

MCQs on Programming, Networking, Database and OS

102 Questions Subject Test
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61
Medium css fpsc Uploaded: 20 Jun 2026

Which database operation removes a table completely?

  • A DELETE
  • B REMOVE
  • C DROP
  • D CLEAR
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Medium css pms fpsc ppsc nts Uploaded: 25 Jun 2026

On which tab in Microsoft Word can you find the Header and Footer commands?

  • A Home
  • B References
  • C View
  • D Insert
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Medium css fpsc Uploaded: 20 Jun 2026

Which of the following is a NoSQL database?

  • A Oracle
  • B MySQL
  • C MongoDB
  • D PostgreSQL
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Medium css fpsc Uploaded: 20 Jun 2026

What is the time complexity of Binary Search in the worst case?

  • A O(n)
  • B O(log n)
  • C O(n²)
  • D O(1)
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Medium css fpsc Uploaded: 20 Jun 2026

Which programming language is commonly used for data analysis and machine learning?

  • A COBOL
  • B Python
  • C Pascal
  • D Fortran
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Medium css Uploaded: 23 Aug 2026

What is the function of Ctrl+Alt+Delete in Windows?

  • A To save a file
  • B To paste text
  • C To open task manager or security options
  • D To copy text
67
Medium css pms fpsc ppsc nts Uploaded: 01 Jul 2026

Which data structure is primarily used by the Depth-First Search (DFS) algorithm?

  • A Queue
  • B Hash Table
  • C Stack
  • D Heap
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Medium css Uploaded: 09 Aug 2026

Which of the following is a valid IP address version widely used today alongside IPv6?

  • A IPv2
  • B IPv4
  • C IPv5
  • D IPv3
69
Medium css pms fpsc ppsc nts Uploaded: 25 Jun 2026

Who co-invented the World Wide Web (WWW) alongside Robert Cailliau?

  • A Tom Berners
  • B Mark Zuckerberg
  • C Tim Berners-Lee
  • D Bill Gates
70
Medium css Uploaded: 09 Aug 2026

What is the primary purpose of cloud computing?

  • A Repair hardware
  • B Store and access data over the internet
  • C Design websites
  • D Print documents
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Medium css Uploaded: 23 Aug 2026

Which of the following is a popular web browser?

  • A Google Chrome
  • B WinRAR
  • C Adobe Reader
  • D MS Word
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Medium css Uploaded: 09 Aug 2026

What is the main function of an assembler?

  • A Convert assembly language to machine code
  • B Store data permanently
  • C Run applications
  • D Manage files
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Medium css Uploaded: 23 Aug 2026

What is the base of the octal number system?

  • A 8
  • B 2
  • C 16
  • D 10
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Medium css pms Uploaded: 20 Jun 2026

Which data structure is most suitable for implementing recursion?

  • A Queue
  • B Array
  • C Stack
  • D Heap
75
Medium css fpsc Uploaded: 20 Jun 2026

What does VLOOKUP do in Excel?

  • A Creates charts
  • B Searches values vertically
  • C Deletes rows
  • D Sorts data
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Medium css pms Uploaded: 20 Jun 2026

What is multitasking in an operating system?

  • A Using multiple monitors
  • B Running multiple processes concurrently
  • C Installing multiple OS
  • D Using many files
77
Medium css pms fpsc ppsc nts Uploaded: 25 Jun 2026

What is the main purpose of a Firewall in a computer network?

  • A To prevent unauthorized access
  • B To remove all viruses from a computer
  • C To increase internet speed
  • D To store network Data
78
Medium css fpsc Uploaded: 20 Jun 2026

What is the purpose of an index in a database?

  • A Reduce security
  • B Improve query performance
  • C Store backups
  • D Encrypt records
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Medium css Uploaded: 13 Aug 2026

Which company developed the first web browser?

  • A Apple
  • B Google
  • C CERN
  • D Microsoft
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Medium css Uploaded: 07 Aug 2026

Which scheduling algorithm can lead to starvation?

  • A Shortest Job First without priority handling correctly is arguable, but choose SJF
  • B Round Robin
  • C Priority Scheduling
  • D First Come First Serve
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