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Computer Science MCQs

MCQs on Programming, Networking, Database and OS

140 Questions Subject Test
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Filter: All Exams css pms fpsc ppsc nts | All Easy Medium Hard
121
Hard ppsc Uploaded: 13 Aug 2026

Which of the following is an example of an embedded system?

  • A Web server
  • B Cloud storage
  • C Desktop computer
  • D Digital wristwatch with a microcontroller
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122
Medium ppsc Uploaded: 23 Aug 2026

Which language is primarily used for styling web pages?

  • A SQL
  • B CSS
  • C Python
  • D HTML
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123
Medium ppsc Uploaded: 07 Aug 2026

What is the function of RAM in a computer?

  • A Temporarily store data for quick access by the CPU
  • B Display images on the screen
  • C Connect to the internet
  • D Permanently store the operating system
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124
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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125
Medium css pms fpsc ppsc nts Uploaded: 22 Jun 2026

What is the default port number for HTTPS?

  • A 21
  • B 25
  • C 80
  • D 443
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126
Medium ppsc Uploaded: 13 Aug 2026

What is a kernel?

  • A A hardware component
  • B A type of virus
  • C An application software
  • D Core part of an operating system
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127
Medium css pms fpsc ppsc nts Uploaded: 25 Jun 2026

Which sorting algorithm generally provides the best average-case performance for large datasets?

  • A Quick Sort
  • B Merge Sort
  • C Bubble Sort
  • D Selection Sort
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128
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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129
Hard ppsc Uploaded: 13 Aug 2026

What does ACID stand for in database transactions?

  • A Atomicity, Consistency, Isolation, Durability
  • B Atomic, Complete, Isolated, Direct
  • C Access, Control, Integrity, Data
  • D Accuracy, Consistency, Integrity, Data
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130
Medium ppsc Uploaded: 23 Aug 2026

Which of the following best defines a Trojan horse in computing?

  • A A hardware upgrade
  • B A type of firewall
  • C A network cable
  • D Malware disguised as legitimate software
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131
Easy ppsc Uploaded: 23 Aug 2026

Which of the following best describes blockchain technology?

  • A A programming language
  • B A local storage device
  • C A type of antivirus software
  • D A decentralized, distributed ledger system
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132
Easy ppsc nts Uploaded: 20 Jun 2026

What is cloud storage?

  • A Local disk storage
  • B Storage accessible via the internet
  • C RAM allocation
  • D CPU cache
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133
Medium ppsc Uploaded: 23 Aug 2026

What is the full form of LAN?

  • A Long Area Network
  • B Linked Area Network
  • C Large Area Network
  • D Local Area Network
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134
Medium ppsc Uploaded: 13 Aug 2026

What is a linked list?

  • A A sorting algorithm
  • B A collection of elements in contiguous memory
  • C A type of database
  • D A collection of nodes where each points to the next
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135
Medium fpsc ppsc Uploaded: 20 Jun 2026

What is the purpose of Slide Master in PowerPoint?

  • A Print slides
  • B Control overall slide design
  • C Insert videos
  • D Check spelling
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136
Hard ppsc Uploaded: 13 Aug 2026

Which of these is an object-oriented programming language?

  • A Machine Language
  • B Assembly
  • C Java
  • D C
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137
Hard ppsc Uploaded: 07 Aug 2026

What is the function of a firewall?

  • A Compile source code
  • B Monitor and control network traffic for security
  • C Increase processing speed
  • D Store large files
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138
Medium ppsc Uploaded: 09 Aug 2026

Which of the following is an example of an interpreted programming language?

  • A Python
  • B C++
  • C Java
  • D C
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139
Medium css pms fpsc ppsc nts Uploaded: 25 Jun 2026

What type of communication occurs between a computer and a keyboard?

  • A Full-Duplex
  • B Simplex
  • C Half-Duplex
  • D Multiplex
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140
Medium ppsc Uploaded: 07 Aug 2026

Which of the following is a web browser?

  • A MS Excel
  • B Google Chrome
  • C MS Word
  • D MS Paint
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