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Computer Science MCQs

MCQs on Programming, Networking, Database and OS

306 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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81
Medium fpsc Uploaded: 23 Aug 2026

What is the function of Wi-Fi?

  • A To manage databases
  • B To provide wireless internet connectivity
  • C To store files
  • D To compile code
82
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
83
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
84
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
85
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
86
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
87
Medium fpsc Uploaded: 07 Aug 2026

Which of the following best defines an algorithm?

  • A A type of hardware
  • B A programming language
  • C A step-by-step procedure to solve a problem
  • D A database structure
88
Medium nts Uploaded: 23 Aug 2026

Which of the following is a DBMS software?

  • A MS Word
  • B VLC
  • C MySQL
  • D Photoshop
89
Medium css Uploaded: 13 Aug 2026

What is a variable in programming?

  • A A named storage location for data
  • B A function name
  • C A fixed value
  • D A type of loop
90
Medium css fpsc Uploaded: 20 Jun 2026

What is the purpose of a compiler?

  • A Execute programs directly
  • B Translate source code into machine code
  • C Store data permanently
  • D Manage networks
91
Medium nts Uploaded: 13 Aug 2026

What is the goal of software maintenance?

  • A Writing new software
  • B Designing databases
  • C Testing hardware
  • D Fixing bugs and updating software after deployment
92
Medium nts Uploaded: 07 Aug 2026

Which of the following is a characteristic of open-source software?

  • A Source code is always kept secret
  • B It cannot be distributed freely
  • C It requires a paid license always
  • D Source code is publicly available for modification
93
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
94
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
95
Medium ppsc Uploaded: 13 Aug 2026

Which of these is a real-time operating system?

  • A Windows 10
  • B RTOS
  • C macOS
  • D Ubuntu
96
Medium pms Uploaded: 07 Aug 2026

Which data structure uses FIFO order?

  • A Tree
  • B Graph
  • C Stack
  • D Queue
97
Medium nts Uploaded: 09 Aug 2026

Which of the following best describes 'phishing'?

  • A A hardware component
  • B A method of fraudulently obtaining sensitive information
  • C A type of programming language
  • D A network protocol
98
Medium nts Uploaded: 23 Aug 2026

Which of the following is a non-linear data structure?

  • A Tree
  • B Array
  • C Stack
  • D Queue
99
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
100
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
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