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Computer Science MCQs

MCQs on Programming, Networking, Database and OS

97 Questions Subject Test
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1
Hard nts Uploaded: 23 Aug 2026

Which memory type stores the BIOS?

  • A RAM
  • B ROM
  • C Virtual Memory
  • D Cache
2
Hard fpsc Uploaded: 13 Aug 2026

Which SQL command is used to retrieve data?

  • A INSERT
  • B DELETE
  • C SELECT
  • D UPDATE
3
Hard nts Uploaded: 13 Aug 2026

Which of the following best defines 'syntax error'?

  • A Hardware malfunction
  • B Violation of programming language rules
  • C Network failure
  • D Logical mistake in code
4
Hard ppsc Uploaded: 23 Aug 2026

What is the term for unwanted repetitive email messages?

  • A Cache
  • B Cookies
  • C Spam
  • D Malware
5
Hard fpsc Uploaded: 13 Aug 2026

What does OOP stand for?

  • A Object Oriented Programming
  • B Object Output Programming
  • C Ordered Object Programming
  • D Output Oriented Programming
6
Hard ppsc Uploaded: 23 Aug 2026

What does CAPTCHA stand for functionally?

  • A A test to distinguish humans from bots
  • B A programming language
  • C A type of firewall
  • D A database key
7
Hard nts Uploaded: 09 Aug 2026

Which of the following is the fastest memory in a computer?

  • A RAM
  • B Cache
  • C Hard Disk
  • D ROM
8
Hard fpsc Uploaded: 13 Aug 2026

What does HTTPS use to secure data transmission?

  • A Caching
  • B Encryption
  • C Compression
  • D Indexing
9
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
10
Hard nts Uploaded: 07 Aug 2026

Which layer of the OSI model is responsible for routing?

  • A Transport Layer
  • B Application Layer
  • C Data Link Layer
  • D Network Layer
11
Hard css pms Uploaded: 20 Jun 2026

Which topology provides the highest fault tolerance?

  • A Bus
  • B Star
  • C Ring
  • D Mesh
12
Hard nts Uploaded: 09 Aug 2026

What is the function of an operating system's kernel?

  • A Design user interfaces
  • B Store internet history
  • C Manage hardware resources directly
  • D Compress files
13
Hard nts Uploaded: 23 Aug 2026

What is the purpose of encryption?

  • A To increase network speed
  • B To compress files
  • C To convert data into a secure, unreadable format
  • D To delete data
14
Hard fpsc Uploaded: 23 Aug 2026

Which of the following best describes an operating system's multitasking feature?

  • A Running multiple programs simultaneously
  • B Formatting the hard disk
  • C Running only one program at a time
  • D Deleting unused files
15
Hard ppsc Uploaded: 07 Aug 2026

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

  • A Windows
  • B MS Word
  • C Excel
  • D Photoshop
16
Hard nts Uploaded: 13 Aug 2026

What does the term 'plug and play' refer to in computing?

  • A Manual driver installation required
  • B A type of virus
  • C A network protocol
  • D Devices that work automatically when connected without manual setup
17
Hard ppsc Uploaded: 13 Aug 2026

What is the time complexity of binary search?

  • A O(n)
  • B O(n^2)
  • C O(log n)
  • D O(1)
18
Hard nts Uploaded: 23 Aug 2026

Which memory management technique divides memory into fixed-size blocks?

  • A Swapping
  • B Segmentation
  • C Caching
  • D Paging
19
Hard ppsc Uploaded: 23 Aug 2026

What is the function of a hub in networking?

  • A To route data intelligently
  • B To store files
  • C To broadcast data to all connected devices
  • D To encrypt data
20
Hard nts Uploaded: 09 Aug 2026

Which of the following is a characteristic of object-oriented programming?

  • A Sequential execution only
  • B No data types
  • C No functions
  • D Encapsulation
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