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Computer Science MCQs

MCQs on Programming, Networking, Database and OS

198 Questions Subject Test
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121
Easy ppsc nts Uploaded: 20 Jun 2026

What does GUI stand for?

  • A General User Interface
  • B Graphical User Interface
  • C Graphic Utility Integration
  • D Global User Internet
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122
Easy nts Uploaded: 09 Aug 2026

What is the full form of USB?

  • A United System Bus
  • B United Serial Bus
  • C Universal System Bus
  • D Universal Serial Bus
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123
Easy nts Uploaded: 23 Aug 2026

What is a deadlock in operating systems?

  • A A situation where processes wait indefinitely for resources
  • B A network error
  • C A type of virus
  • D A memory leak
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124
Easy nts Uploaded: 23 Aug 2026

Which of the following is used to prevent unauthorized access to a network?

  • A Switch
  • B Modem
  • C Router
  • D Firewall
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125
Easy nts Uploaded: 20 Jun 2026

Which Excel function is used to calculate the average of a range of numbers?

  • A SUM()
  • B COUNT()
  • C AVERAGE()
  • D MAX()
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126
Easy pms Uploaded: 13 Aug 2026

What does SDLC stand for?

  • A System Design Life Cycle
  • B Software Development Life Cycle
  • C System Development Logic Cycle
  • D Software Design Life Cycle
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127
Easy nts Uploaded: 23 Aug 2026

What is the function of the Windows Registry?

  • A To scan documents
  • B To manage printers
  • C To browse the internet
  • D To store configuration settings for the OS and software
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128
Easy fpsc ppsc nts Uploaded: 18 Jun 2026

What does CPU stand for?

  • A Central Processing Unit
  • B Central Program Unit
  • C Computer Processing Unit
  • D Central Processor Utility
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129
Easy nts Uploaded: 13 Aug 2026

What is the purpose of data backup?

  • A Increase processing speed
  • B Encrypt files
  • C Compress storage
  • D Protect against data loss
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130
Easy nts Uploaded: 09 Aug 2026

Which memory is non-volatile?

  • A Cache
  • B RAM
  • C ROM
  • D Register
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131
Easy pms Uploaded: 13 Aug 2026

Which of the following is the fastest memory?

  • A Hard Disk
  • B ROM
  • C Cache Memory
  • D RAM
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132
Easy nts Uploaded: 20 Jun 2026

Which number system is directly understood by a computer?

  • A Decimal
  • B Binary
  • C Octal
  • D Hexadecimal
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133
Easy nts Uploaded: 20 Jun 2026

Which protocol retrieves email messages from a mail server?

  • A POP3
  • B SMTP
  • C FTP
  • D HTTP
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134
Easy css Uploaded: 07 Aug 2026

Which data structure uses LIFO order?

  • A Stack
  • B Queue
  • C Linked List
  • D Array
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135
Easy fpsc nts Uploaded: 20 Jun 2026

What is malware?

  • A Network cable
  • B Malicious software
  • C Database table
  • D Operating system
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136
Easy css Uploaded: 23 Aug 2026

What is firmware?

  • A A database system
  • B A network protocol
  • C A type of virus
  • D Permanent software programmed into hardware
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137
Easy ppsc Uploaded: 09 Aug 2026

Which of the following is a volatile memory?

  • A RAM
  • B Flash Drive
  • C Hard Disk
  • D ROM
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138
Easy fpsc Uploaded: 13 Aug 2026

Which of the following is a client-server database?

  • A Notepad
  • B MySQL
  • C MS Access
  • D Excel
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139
Easy ppsc Uploaded: 23 Aug 2026

Which component is regarded as the brain of the computer?

  • A RAM
  • B Motherboard
  • C Hard Disk
  • D CPU
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140
Easy ppsc Uploaded: 23 Aug 2026

What is the purpose of the <title> tag in HTML?

  • A To insert an image
  • B To create a hyperlink
  • C To create a table
  • D To set the title shown in the browser tab
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