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Computer Science MCQs

MCQs on Programming, Networking, Database and OS

145 Questions Subject Test
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Strengthen your knowledge of computer fundamentals, hardware, software, programming, networks, databases and information technology.

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Hard css pms Uploaded: 20 Jun 2026

Which topology provides the highest fault tolerance?

  • A Bus
  • B Star
  • C Ring
  • D Mesh
22
Easy css Uploaded: 13 Aug 2026

Which MS Office application is used for spreadsheets?

  • A Excel
  • B Word
  • C Access
  • D PowerPoint
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Medium css Uploaded: 23 Aug 2026

What is the function of a proxy server?

  • A To display graphics
  • B To manage printers
  • C To store permanent files
  • D To act as an intermediary between client and server
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Medium css Uploaded: 23 Aug 2026

Which protocol is used for transferring web pages?

  • A SMTP
  • B HTTP
  • C TCP
  • D FTP
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Medium css Uploaded: 13 Aug 2026

What is a Trojan horse in computing?

  • A A type of firewall
  • B A network cable
  • C A useful software tool
  • D Malware disguised as legitimate software
26
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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Easy css Uploaded: 13 Aug 2026

Which of the following is an example of a search engine?

  • A Google
  • B Photoshop
  • C Windows
  • D Excel
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Easy css Uploaded: 23 Aug 2026

Which of the following represents 1024 kilobytes?

  • A 1 Megabyte
  • B 1 Gigabyte
  • C 1 Kilobyte
  • D 1 Byte
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Medium css Uploaded: 13 Aug 2026

What does phishing typically try to steal?

  • A Software licenses
  • B Network bandwidth
  • C Sensitive personal information
  • D Hardware components
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Medium css Uploaded: 09 Aug 2026

Which generation of computers used transistors?

  • A Third
  • B First
  • C Fourth
  • D Second
31
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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Medium css Uploaded: 23 Aug 2026

What is polymorphism in OOP?

  • A A type of loop structure
  • B A database normalization technique
  • C A network security protocol
  • D Ability of objects to take multiple forms
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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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Medium css Uploaded: 07 Aug 2026

Which of these is a social media platform?

  • A Adobe Photoshop
  • B VLC Media Player
  • C MS Word
  • D Facebook
35
Medium css fpsc Uploaded: 20 Jun 2026

Which protocol is used to securely transfer files over SSH?

  • A FTP
  • B TFTP
  • C SFTP
  • D SMTP
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Medium css Uploaded: 09 Aug 2026

Which of these is a type of computer virus?

  • A Firewall
  • B Trojan Horse
  • C Antivirus
  • D Router
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Medium css Uploaded: 13 Aug 2026

What is ransomware?

  • A A backup tool
  • B Malware that locks data and demands payment
  • C An antivirus program
  • D Free software
38
Medium css pms fpsc ppsc nts Uploaded: 25 Jun 2026

Which memory type is most commonly used to store firmware in embedded systems?

  • A RAM
  • B Virtual Memory
  • C Cache Memory
  • D ROM
39
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
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Easy css Uploaded: 13 Aug 2026

What is multitasking in an OS?

  • A Running one program at a time
  • B Formatting multiple disks
  • C Deleting multiple files
  • D Running multiple programs simultaneously
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