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Computer Science MCQs

MCQs on Programming, Networking, Database and OS

601 Questions Subject Test
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181
Medium nts Uploaded: 23 Aug 2026

Which of the following is a DBMS software?

  • A MS Word
  • B VLC
  • C MySQL
  • D Photoshop
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182
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
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183
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
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184
Easy pms Uploaded: 23 Aug 2026

What is the function of an assembler?

  • A To interpret scripts
  • B To convert assembly language into machine code
  • C To compile high-level code
  • D To manage databases
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185
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
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186
Easy pms Uploaded: 09 Aug 2026

Which of the following is an example of an open-source operating system?

  • A macOS
  • B iOS
  • C Linux
  • D Windows
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187
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
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188
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
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189
Easy css Uploaded: 23 Aug 2026

What is the function of DNS in networking?

  • A Compresses files
  • B Translates domain names into IP addresses
  • C Manages hardware
  • D Encrypts data
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190
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
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191
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
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192
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
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193
Medium ppsc Uploaded: 13 Aug 2026

Which of these is a real-time operating system?

  • A Windows 10
  • B RTOS
  • C macOS
  • D Ubuntu
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194
Medium pms Uploaded: 07 Aug 2026

Which data structure uses FIFO order?

  • A Tree
  • B Graph
  • C Stack
  • D Queue
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195
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
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196
Hard fpsc Uploaded: 13 Aug 2026

What is data redundancy?

  • A Unnecessary duplication of data
  • B Compressed data
  • C Unique data storage
  • D Encrypted data
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197
Medium nts Uploaded: 23 Aug 2026

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

  • A Tree
  • B Array
  • C Stack
  • D Queue
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198
Easy nts Uploaded: 20 Jun 2026

Which key combination cuts selected content?

  • A Ctrl+C
  • B Ctrl+V
  • C Ctrl+X
  • D Ctrl+Z
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199
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
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200
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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