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Computer Science MCQs

MCQs on Programming, Networking, Database and OS

179 Questions Subject Test
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Filter: All Exams css pms fpsc ppsc nts | All Easy Medium Hard
121
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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122
Medium fpsc nts Uploaded: 20 Jun 2026

Which Access key uniquely identifies each record?

  • A Foreign Key
  • B Primary Key
  • C Composite Key
  • D Candidate Key
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123
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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124
Easy nts Uploaded: 09 Aug 2026

Which memory is non-volatile?

  • A Cache
  • B RAM
  • C ROM
  • D Register
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125
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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126
Medium fpsc nts Uploaded: 20 Jun 2026

Which Excel function counts non-empty cells?

  • A COUNT()
  • B COUNTA()
  • C COUNTIF()
  • D SUM()
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127
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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128
Medium nts Uploaded: 13 Aug 2026

What is the purpose of RAID in storage systems?

  • A Encrypt stored data
  • B Compile source code
  • C Combine multiple disks for redundancy or performance
  • D Manage user accounts
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129
Medium nts Uploaded: 23 Aug 2026

Which of the following best describes edge computing?

  • A A network topology
  • B Processing data only in the cloud
  • C A type of database
  • D Processing data closer to its source rather than a centralized location
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130
Hard nts Uploaded: 13 Aug 2026

Which of the following is an example of an interpreted language?

  • A Assembly
  • B C++
  • C Python
  • D C
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131
Medium nts Uploaded: 23 Aug 2026

Which of the following is a linear data structure?

  • A Hash Table
  • B Graph
  • C Array
  • D Tree
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132
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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133
Hard nts Uploaded: 09 Aug 2026

What does 'ALU' stand for in computer architecture?

  • A Arithmetic Logic Unit
  • B Advanced Logic Unit
  • C Arithmetic Language Unit
  • D Automated Logic Unit
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134
Medium nts Uploaded: 07 Aug 2026

Which of the following best describes 'machine learning'?

  • A A file compression technique
  • B A type of computer hardware
  • C A network security protocol
  • D A subset of AI where systems learn from data
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135
Hard nts Uploaded: 23 Aug 2026

What is the function of a modem?

  • A To manage printers
  • B To store files
  • C To modulate and demodulate signals for internet connectivity
  • D To display graphics
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136
Medium css pms fpsc ppsc nts Uploaded: 25 Jun 2026

What is the main purpose of a Firewall in a computer network?

  • A To prevent unauthorized access
  • B To remove all viruses from a computer
  • C To increase internet speed
  • D To store network Data
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137
Easy nts Uploaded: 23 Aug 2026

Which of the following describes FTP?

  • A A protocol for video calls
  • B A protocol for browsing webpages
  • C A protocol for sending emails
  • D A protocol used for transferring files between computers
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138
Easy fpsc ppsc nts Uploaded: 18 Jun 2026

The internet protocol "HTTP" stands for:

  • A Hyper Text Transfer Protocol
  • B High Tech Transfer Protocol
  • C Hyper Text Transmission Protocol
  • D Hyper Transfer Text Protocol
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139
Medium ppsc nts Uploaded: 20 Jun 2026

What is Freeze Panes used for?

  • A Lock worksheet
  • B Keep rows or columns visible
  • C Protect workbook
  • D Hide formulas
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140
Easy nts Uploaded: 20 Jun 2026

What does URL stand for?

  • A Universal Resource Locator
  • B Uniform Resource Locator
  • C Unified Resource Link
  • D Universal Retrieval Link
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