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Computer Science MCQs

MCQs on Programming, Networking, Database and OS

145 Questions Subject Test
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Which company developed ChatGPT?

  • A Meta
  • B OpenAI
  • C Microsoft
  • D Google
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What is polymorphism in object-oriented programming?

  • A Data hiding
  • B Ability of an object to take multiple forms
  • C Memory allocation
  • D Database indexing
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Which company developed the Windows operating system?

  • A Google
  • B Apple
  • C IBM
  • D Microsoft
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What is the primary purpose of encryption?

  • A Store data permanently
  • B Compress data
  • C Increase internet speed
  • D Secure data by converting it into unreadable format
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Which SDLC model follows a strict sequential approach?

  • A Agile
  • B Spiral
  • C Iterative
  • D Waterfall
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Which programming paradigm focuses on functions and immutability?

  • A Procedural Programming
  • B Object-Oriented Programming
  • C Functional Programming
  • D Assembly Programming
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What is the function of the Find and Replace feature in a word processor?

  • A To save files
  • B To locate and substitute text within a document
  • C To insert images
  • D To print documents
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Which programming language is primarily used for Android development?

  • A Swift
  • B Kotlin
  • C Ruby
  • D PHP
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Which number system is used internally by computers?

  • A Decimal
  • B Octal
  • C Hexadecimal
  • D Binary
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Which symbol is used for comments in C++?

  • A //
  • B ##
  • C ::
  • D **
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Which of the following is an example of a NoSQL database?

  • A PostgreSQL
  • B Oracle
  • C MongoDB
  • D MySQL
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What is the function of a printer driver?

  • A To print documents wirelessly
  • B To scan documents
  • C To enable communication between the OS and printer
  • D To store printed files
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Convert binary 1010 to decimal.

  • A 8
  • B 10
  • C 12
  • D 14
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Which tag is used to create a hyperlink in HTML?

  • A <link>
  • B <a>
  • C <url>
  • D <href>
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What is a database schema?

  • A Backup file
  • B Structure of a database
  • C Network device
  • D Programming language
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Which layer of the OSI model handles data encryption and compression?

  • A Physical Layer
  • B Transport Layer
  • C Presentation Layer
  • D Session Layer
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Which memory is fastest among the following?

  • A Hard Disk
  • B RAM
  • C Cache Memory
  • D ROM
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A computer virus is a type of?

  • A Hardware device
  • B Operating system
  • C Programming language
  • D Malicious software
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Which programming language is known as the "mother of all languages"?

  • A Python
  • B Java
  • C C
  • D FORTRAN
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What is a Trojan Horse in cybersecurity?

  • A A network cable
  • B A type of malware disguised as legitimate software
  • C A firewall rule
  • D A backup utility
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