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Computer Science MCQs

MCQs on Programming, Networking, Database and OS

306 Questions Subject Test
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141
Medium css Uploaded: 13 Aug 2026

Which SDLC model follows a strict sequential approach?

  • A Agile
  • B Spiral
  • C Iterative
  • D Waterfall
142
Medium pms Uploaded: 23 Aug 2026

What is the purpose of an interpreter?

  • A To translate entire code at once
  • B To design databases
  • C To execute code line by line
  • D To manage hardware
143
Medium ppsc Uploaded: 23 Aug 2026

What is a computer's clock speed measured in?

  • A Bytes
  • B Pixels
  • C Hertz
  • D Bits
144
Medium fpsc Uploaded: 07 Aug 2026

Which of the following is a search engine?

  • A Photoshop
  • B Google
  • C Windows
  • D Excel
145
Medium css Uploaded: 23 Aug 2026

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
146
Medium css fpsc Uploaded: 20 Jun 2026

Which programming language is primarily used for Android development?

  • A Swift
  • B Kotlin
  • C Ruby
  • D PHP
147
Medium css Uploaded: 13 Aug 2026

Which number system is used internally by computers?

  • A Decimal
  • B Octal
  • C Hexadecimal
  • D Binary
148
Medium pms Uploaded: 09 Aug 2026

Which of the following is the smallest unit of data in a computer?

  • A Nibble
  • B Byte
  • C Kilobyte
  • D Bit
149
Medium css Uploaded: 13 Aug 2026

Which symbol is used for comments in C++?

  • A //
  • B ##
  • C ::
  • D **
150
Medium css Uploaded: 07 Aug 2026

Which of the following is an example of a NoSQL database?

  • A PostgreSQL
  • B Oracle
  • C MongoDB
  • D MySQL
151
Medium fpsc ppsc Uploaded: 20 Jun 2026

Which feature in Excel is used to summarize large datasets?

  • A Spell Check
  • B Pivot Table
  • C WordArt
  • D AutoFill
152
Medium ppsc Uploaded: 13 Aug 2026

Which language is primarily used for adding interactivity to web pages?

  • A HTML
  • B SQL
  • C JavaScript
  • D CSS
153
Medium ppsc Uploaded: 07 Aug 2026

Which of the following memory types is non-volatile?

  • A Cache
  • B RAM
  • C Register
  • D ROM
154
Medium pms Uploaded: 13 Aug 2026

Which key uniquely identifies a record in another table?

  • A Foreign Key
  • B Primary Key
  • C Composite Key
  • D Candidate Key
155
Medium css Uploaded: 23 Aug 2026

Which tag is used to create a hyperlink in HTML?

  • A <link>
  • B <a>
  • C <url>
  • D <href>
156
Medium css fpsc Uploaded: 20 Jun 2026

What is a database schema?

  • A Backup file
  • B Structure of a database
  • C Network device
  • D Programming language
157
Medium css Uploaded: 07 Aug 2026

Which layer of the OSI model handles data encryption and compression?

  • A Physical Layer
  • B Transport Layer
  • C Presentation Layer
  • D Session Layer
158
Medium fpsc Uploaded: 23 Aug 2026

What is the shortcut key to select all content?

  • A Ctrl+S
  • B Ctrl+A
  • C Ctrl+F
  • D Ctrl+P
159
Medium css fpsc Uploaded: 20 Jun 2026

Which memory is fastest among the following?

  • A Hard Disk
  • B RAM
  • C Cache Memory
  • D ROM
160
Medium nts Uploaded: 23 Aug 2026

What is the purpose of indexing in a database?

  • A To delete duplicate records
  • B To speed up data retrieval operations
  • C To back up the database
  • D To encrypt sensitive data
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