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Computer Science MCQs

MCQs on Programming, Networking, Database and OS

20 Questions Subject Test
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1
Hard css Uploaded: 13 Aug 2026

What does the term 'firmware update' refer to?

  • A Updating the low-level software controlling hardware
  • B Updating a webpage
  • C Updating application software
  • D Updating a database
2
Hard css pms Uploaded: 20 Jun 2026

Which topology provides the highest fault tolerance?

  • A Bus
  • B Star
  • C Ring
  • D Mesh
3
Hard css fpsc Uploaded: 20 Jun 2026

Which algorithm is commonly used to find the shortest path in a weighted graph?

  • A Bubble Sort
  • B Dijkstra's Algorithm
  • C Binary Search
  • D Depth First Search
4
Hard css pms Uploaded: 20 Jun 2026

Which normal form eliminates transitive dependencies?

  • A First Normal Form
  • B Second Normal Form
  • C Third Normal Form
  • D Boyce-Codd Normal Form
5
Hard css Uploaded: 23 Aug 2026

What is the function of an antivirus signature database?

  • A To identify known malware patterns
  • B To manage network traffic
  • C To store user passwords
  • D To compress files
6
Hard css Uploaded: 07 Aug 2026

Which of the following is a common file compression format?

  • A DOC
  • B ZIP
  • C PDF
  • D EXE
7
Hard css Uploaded: 23 Aug 2026

Which topology connects each device to a central hub?

  • A Ring
  • B Mesh
  • C Star
  • D Bus
8
Hard css Uploaded: 23 Aug 2026

What is the function of a computer's heat sink?

  • A To store data
  • B To connect peripherals
  • C To dissipate heat away from components like the CPU
  • D To process graphics
9
Hard css Uploaded: 07 Aug 2026

Which company developed the Windows operating system?

  • A Google
  • B Apple
  • C IBM
  • D Microsoft
10
Hard css pms Uploaded: 20 Jun 2026

Which programming paradigm focuses on functions and immutability?

  • A Procedural Programming
  • B Object-Oriented Programming
  • C Functional Programming
  • D Assembly Programming
11
Hard css fpsc Uploaded: 07 Aug 2026

What is the primary function of DHCP in networking?

  • A Automatically assign IP addresses to devices
  • B Compress data packets
  • C Encrypt network traffic
  • D Block unauthorized websites
12
Hard css pms Uploaded: 20 Jun 2026

Which algorithm technique divides a problem into smaller subproblems?

  • A Greedy
  • B Divide and Conquer
  • C Brute Force
  • D Backtracking
13
Hard css Uploaded: 07 Aug 2026

Which of these is a valid file extension for an image?

  • A .doc
  • B .jpg
  • C .mp3
  • D .exe
14
Hard css Uploaded: 07 Aug 2026

What is the purpose of an operating system's file system?

  • A Increase internet speed
  • B Design graphics
  • C Organize and manage data storage on a device
  • D Compile source code
15
Hard css Uploaded: 13 Aug 2026

What does 'booting' refer to in computing?

  • A Deleting files
  • B Shutting down a system
  • C Installing software
  • D Starting up a computer
16
Hard css Uploaded: 09 Aug 2026

Which of the following is a characteristic of a 'supercomputer'?

  • A Used only for gaming
  • B Limited processing capability
  • C Small size for portability
  • D Extremely high processing power for complex calculations
17
Hard css Uploaded: 13 Aug 2026

What is the shortcut key to save a document?

  • A Ctrl+N
  • B Ctrl+S
  • C Ctrl+O
  • D Ctrl+P
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Hard css Uploaded: 13 Aug 2026

Which number system has a base of 8?

  • A Hexadecimal
  • B Decimal
  • C Octal
  • D Binary
19
Hard css Uploaded: 09 Aug 2026

What is the purpose of 'RAID' in storage systems?

  • A Encrypt data
  • B Combine multiple disks for redundancy and performance
  • C Display graphics
  • D Compress files
20
Hard css fpsc Uploaded: 20 Jun 2026

What is a deadlock in an operating system?

  • A A memory leak
  • B A security attack
  • C A situation where processes wait indefinitely for resources
  • D A file corruption error
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