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Computer Science MCQs

MCQs on Programming, Networking, Database and OS

102 Questions Subject Test
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41
Medium css pms fpsc ppsc nts Uploaded: 01 Jul 2026

In Machine Learning, what is a hyperparameter?

  • A A configuration set before training
  • B A learned weight
  • C An output label
  • D A type of dataset
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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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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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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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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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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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Which software development model follows a sequential approach?

  • A Agile
  • B Scrum
  • C Waterfall
  • D DevOps
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Who is widely regarded as the father of Computer Science?

  • A John von Neumann
  • B Alan Turing
  • C Charles Babbage
  • D Bill Gates
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Which of the following represents 1024 bytes?

  • A 1 Megabyte
  • B 1 Gigabyte
  • C 1 Kilobyte
  • D 1 Terabyte
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Which device converts analog signals to digital signals?

  • A Router
  • B ADC
  • C DAC
  • D Modem
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