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Computer Science MCQs

MCQs on Programming, Networking, Database and OS

140 Questions Subject Test
Subject Preparation Guide

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

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41
Hard ppsc Uploaded: 13 Aug 2026

Which of the following is used to protect data through scrambling?

  • A Firewall
  • B Backup
  • C Encryption
  • D Antivirus
42
Easy ppsc nts Uploaded: 20 Jun 2026

What is the purpose of antivirus software?

  • A Create backups
  • B Design websites
  • C Detect and remove malicious software
  • D Manage databases
43
Easy pms ppsc Uploaded: 09 Aug 2026

What does 'CSS' stand for in web development?

  • A Cascading Style Sheets
  • B Creative Style Sheets
  • C Computer Style Sheets
  • D Cascading Structure Sheets
44
Hard ppsc Uploaded: 13 Aug 2026

What is freeware?

  • A Software available for free use
  • B Malicious software
  • C Software with a mandatory license fee
  • D A hardware component
45
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
46
Hard ppsc Uploaded: 13 Aug 2026

Which company developed the iOS operating system?

  • A Google
  • B Samsung
  • C Apple
  • D Microsoft
47
Medium ppsc Uploaded: 23 Aug 2026

Which of the following is an example of a relational database management system?

  • A Oracle Database
  • B Cassandra
  • C MongoDB
  • D Redis
48
Hard ppsc Uploaded: 07 Aug 2026

What does WWW stand for?

  • A World Wide Wire
  • B Wide World Web
  • C World Wide Web
  • D World Web Wide
49
Medium ppsc Uploaded: 09 Aug 2026

Which of the following is used to store a website's files and make it accessible online?

  • A Modem
  • B Switch
  • C Router
  • D Web Server
50
Medium ppsc Uploaded: 23 Aug 2026

Which of the following is a cloud storage service?

  • A Calculator
  • B MS Paint
  • C Google Drive
  • D Notepad
51
Easy ppsc nts Uploaded: 18 Jun 2026

Which of the following is NOT an operating system?

  • A Windows 11
  • B Ubuntu Linux
  • C Microsoft Word
  • D macOS Ventura
52
Medium fpsc ppsc Uploaded: 20 Jun 2026

Which Excel feature applies formatting based on rules?

  • A Themes
  • B Conditional Formatting
  • C AutoFilter
  • D Freeze Panes
53
Easy ppsc nts Uploaded: 20 Jun 2026

What is the primary function of an operating system?

  • A Create websites
  • B Manage hardware and software resources
  • C Compile programs
  • D Design databases
54
Medium ppsc Uploaded: 13 Aug 2026

What is a view in SQL?

  • A A physical table
  • B A type of index
  • C A backup file
  • D A virtual table based on a query result
55
Medium ppsc Uploaded: 23 Aug 2026

What is quantum computing based on?

  • A Mechanical gears
  • B Analog signal processing
  • C Principles of quantum mechanics
  • D Classical binary logic only
56
Medium ppsc Uploaded: 13 Aug 2026

Which of these is a real-time operating system?

  • A Windows 10
  • B RTOS
  • C macOS
  • D Ubuntu
57
Medium ppsc Uploaded: 13 Aug 2026

What is 2's complement used for?

  • A Data compression
  • B Representing negative numbers
  • C Storing text
  • D Increasing speed
58
Medium ppsc Uploaded: 07 Aug 2026

Which of the following is used to reduce data redundancy in databases?

  • A Replication
  • B Indexing only
  • C Normalization
  • D Denormalization
59
Medium fpsc ppsc Uploaded: 20 Jun 2026

Which scheduling algorithm gives each process a fixed time slice?

  • A FCFS
  • B Round Robin
  • C Shortest Job First
  • D Priority Scheduling
60
Medium ppsc Uploaded: 07 Aug 2026

Which of the following is a type of computer network covering a small geographic area?

  • A MAN
  • B GAN
  • C WAN
  • D LAN
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