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Computer Science MCQs

MCQs on Programming, Networking, Database and OS

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1
Medium pms Uploaded: 13 Aug 2026

What is the main function of an operating system?

  • A Manage hardware and software resources
  • B Compile programs
  • C Write documents
  • D Design websites
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2
Medium pms Uploaded: 23 Aug 2026

What does HTTP status code 200 indicate?

  • A Page not found
  • B Bad request
  • C Successful request
  • D Server error
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3
Medium css pms fpsc ppsc nts Uploaded: 01 Jul 2026

What does "GPT" stand for in ChatGPT?

  • A Global Prediction Technique
  • B Generative Pre-trained Transforme
  • C General Processing Tool
  • D Graphical Pattern Tracke
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4
Medium pms Uploaded: 13 Aug 2026

What does Wi-Fi stand for?

  • A Wireless Fidelity
  • B Wireless Field
  • C Wireless Finder
  • D Wide Fidelity
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5
Medium css pms Uploaded: 20 Jun 2026

What is a macro in MS Office?

  • A Database
  • B Automated task sequence
  • C Chart type
  • D Network protocol
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6
Medium pms Uploaded: 09 Aug 2026

What is the binary equivalent of decimal number 10?

  • A 1010
  • B 1100
  • C 1011
  • D 1001
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7
Medium pms Uploaded: 23 Aug 2026

How many bits make one byte?

  • A 8
  • B 16
  • C 4
  • D 2
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8
Medium pms ppsc Uploaded: 07 Aug 2026

Which of the following best describes 'Big Data'?

  • A A programming language
  • B A small database table
  • C Extremely large and complex data sets
  • D A type of computer virus
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9
Medium pms Uploaded: 23 Aug 2026

Which HTML tag is used to define the largest heading?

  • A <h6>
  • B <h1>
  • C <header>
  • D <head>
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10
Medium pms Uploaded: 13 Aug 2026

Which of the following is an example of cloud storage service?

  • A Notepad
  • B Google Drive
  • C MS Paint
  • D Calculator
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11
Medium css pms fpsc ppsc nts Uploaded: 25 Jun 2026

Which bus is primarily responsible for transferring data between the CPU and memory?

  • A Address Bus
  • B Expansion Bus
  • C Control Bus
  • D Data Bus
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12
Medium pms Uploaded: 07 Aug 2026

What does SQL stand for?

  • A Structured Question Language
  • B Simple Query Language
  • C Structured Query Language
  • D System Query Language
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13
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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14
Medium pms Uploaded: 23 Aug 2026

What is the function of the CPU's ALU?

  • A To manage memory addresses
  • B To connect peripherals
  • C To perform arithmetic and logical operations
  • D To store instructions
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15
Medium pms Uploaded: 23 Aug 2026

Which of the following best describes an e-commerce website?

  • A A search engine
  • B A platform for buying and selling goods online
  • C An operating system
  • D A social networking site
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16
Medium css pms fpsc ppsc nts Uploaded: 25 Jun 2026

Why are Headers and Footers added to a document in MS Word?

  • A To mark the beginning of a page
  • B To improve the document's appearance
  • C To display repeating information such as page numbers, dates, and titles on printed pages
  • D To make a document easier to read
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17
Medium css pms Uploaded: 20 Jun 2026

What is the purpose of a foreign key?

  • A Store passwords
  • B Identify duplicate records
  • C Create relationships between tables
  • D Encrypt database contents
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18
Medium pms Uploaded: 13 Aug 2026

What is the worst-case time complexity of bubble sort?

  • A O(n)
  • B O(n log n)
  • C O(n^2)
  • D O(log n)
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19
Medium pms Uploaded: 13 Aug 2026

What is the default port number for HTTP?

  • A 443
  • B 21
  • C 80
  • D 25
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20
Medium pms Uploaded: 07 Aug 2026

What is the main function of a compiler?

  • A Display graphics
  • B Manage network connections
  • C Convert source code into machine code
  • D Store data permanently
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