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Computer Science MCQs

MCQs on Programming, Networking, Database and OS

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81
Hard pms Uploaded: 23 Aug 2026

What is the function of Task Manager in Windows?

  • A To edit documents
  • B To browse the internet
  • C To scan for viruses
  • D To monitor and manage running processes
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82
Hard nts Uploaded: 09 Aug 2026

Which of the following is a function of the transport layer in networking?

  • A Displaying web pages
  • B Routing packets
  • C Ensuring reliable data transfer
  • D Physical cabling
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83
Hard fpsc Uploaded: 23 Aug 2026

What is IPv4?

  • A A programming language
  • B A database system
  • C A type of malware
  • D A version of Internet Protocol using 32-bit addresses
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84
Hard ppsc Uploaded: 13 Aug 2026

Which of the following is an example of an embedded system?

  • A Web server
  • B Cloud storage
  • C Desktop computer
  • D Digital wristwatch with a microcontroller
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85
Hard nts Uploaded: 23 Aug 2026

What is the purpose of cookies in web browsing?

  • A To store user data for websites
  • B To manage hardware drivers
  • C To compress images
  • D To speed up the CPU
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86
Hard css Uploaded: 09 Aug 2026

Which of the following is a characteristic of a 'supercomputer'?

  • A Used only for gaming
  • B Limited processing capability
  • C Small size for portability
  • D Extremely high processing power for complex calculations
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87
Hard css Uploaded: 13 Aug 2026

What is the shortcut key to save a document?

  • A Ctrl+N
  • B Ctrl+S
  • C Ctrl+O
  • D Ctrl+P
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88
Hard nts Uploaded: 07 Aug 2026

Which of the following best describes 'multithreading'?

  • A Running multiple operating systems simultaneously
  • B Connecting multiple computers via a network
  • C Executing multiple threads concurrently within a single process
  • D Storing data across multiple hard drives
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89
Hard ppsc Uploaded: 13 Aug 2026

What does ACID stand for in database transactions?

  • A Atomicity, Consistency, Isolation, Durability
  • B Atomic, Complete, Isolated, Direct
  • C Access, Control, Integrity, Data
  • D Accuracy, Consistency, Integrity, Data
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90
Hard css Uploaded: 13 Aug 2026

Which number system has a base of 8?

  • A Hexadecimal
  • B Decimal
  • C Octal
  • D Binary
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91
Hard css Uploaded: 09 Aug 2026

What is the purpose of 'RAID' in storage systems?

  • A Encrypt data
  • B Combine multiple disks for redundancy and performance
  • C Display graphics
  • D Compress files
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92
Hard ppsc Uploaded: 13 Aug 2026

Which of these is an object-oriented programming language?

  • A Machine Language
  • B Assembly
  • C Java
  • D C
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93
Hard ppsc Uploaded: 07 Aug 2026

What is the function of a firewall?

  • A Compile source code
  • B Monitor and control network traffic for security
  • C Increase processing speed
  • D Store large files
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94
Hard pms Uploaded: 23 Aug 2026

Which of the following is a server-side scripting language?

  • A JavaScript
  • B CSS
  • C PHP
  • D HTML
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95
Hard pms Uploaded: 07 Aug 2026

Which of the following is used to connect a computer to the internet wirelessly?

  • A USB Cable
  • B Wi-Fi
  • C Ethernet Cable
  • D HDMI Cable
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96
Hard css fpsc Uploaded: 20 Jun 2026

What is a deadlock in an operating system?

  • A A memory leak
  • B A security attack
  • C A situation where processes wait indefinitely for resources
  • D A file corruption error
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97
Hard nts Uploaded: 13 Aug 2026

Which of the following is a compiled programming language?

  • A JavaScript
  • B PHP
  • C C++
  • D Python
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