Computer Questions and Answer | General Knowledge | Computer | 100+ Computer Question |

Certainly! Here are 100+ general knowledge computer questions along with their answers:

1. What is a computer?

• A computer is an electronic device that processes data and performs tasks according to a set of instructions.

1. Who is considered the father of modern computers?

• Alan Turing is often considered the father of modern computers for his contributions to theoretical computer science and his work on the concept of a universal Turing machine.

1. What is the difference between hardware and software?

• Hardware refers to the physical components of a computer system, such as the processor, memory, and storage devices, while software refers to the programs, applications, and data that run on the hardware.

1. What is an operating system?

• An operating system is system software that manages computer hardware, software resources, and provides common services for computer programs. Examples include Windows, macOS, and Linux.

1. What is a CPU?

• The Central Processing Unit (CPU) is the primary component of a computer that performs arithmetic, logic, control, and input/output operations specified by the instructions in a program.

1. What is RAM?

• Random Access Memory (RAM) is a type of computer memory that stores data and machine code currently being used or processed by the CPU. It is volatile memory, meaning it loses its contents when the computer is powered off.

1. What is a hard drive?

• A hard drive is a non-volatile storage device used to store and retrieve digital data on a computer. It consists of one or more rigid disks coated with magnetic material.

1. What is a file extension?

• A file extension is a suffix added to the end of a filename to indicate the type of file and the format of its contents. For example, “.txt” indicates a text file, and “.jpg” indicates a JPEG image file.

1. What is a browser?

• A web browser is a software application used to access and view websites on the World Wide Web. Examples include Google Chrome, Mozilla Firefox, and Microsoft Edge.

1. What is a URL?
   • A Uniform Resource Locator (URL) is a web address used to specify the location of a resource on the internet. It typically consists of a protocol (such as HTTP or HTTPS), a domain name, and a path to the resource.
2. What is HTML?
   • HyperText Markup Language (HTML) is the standard markup language used to create and design web pages. It defines the structure and layout of web content using tags and attributes.
3. What is CSS?
   • Cascading Style Sheets (CSS) is a style sheet language used to describe the presentation of a document written in HTML. It defines how HTML elements are displayed on screen, in print, or other media.
4. What is JavaScript?
   • JavaScript is a programming language used to add interactivity and dynamic behavior to web pages. It is commonly used for client-side scripting in web development.
5. What is a firewall?
   • A firewall is a network security device or software that monitors and controls incoming and outgoing network traffic based on predetermined security rules. It acts as a barrier between a trusted internal network and untrusted external networks, such as the internet.
6. What is a virus?
   • A computer virus is a type of malicious software that replicates itself by modifying other computer programs and inserting its own code. Viruses can cause harm to computer systems by corrupting files, stealing data, or disrupting normal operations.
7. What is a LAN?
   • A Local Area Network (LAN) is a network that connects computers and devices within a limited geographical area, such as a home, office, or school. LANs typically use wired or wireless connections to facilitate communication and resource sharing among connected devices.
8. What is a WAN?
   • A Wide Area Network (WAN) is a network that connects computers and devices over a wide geographical area, often spanning multiple cities, countries, or continents. WANs use public or private communication links, such as leased lines or satellite connections, to connect geographically dispersed locations.
9. What is a modem?
   • A modem is a device that modulates and demodulates digital data to enable communication between computers or other digital devices over a network, such as the internet or a telephone line.
10. What is a router?
    • A router is a network device that forwards data packets between computer networks. It acts as an intermediary between devices on a local network and external networks, such as the internet, by determining the best path for data transmission.
11. What is cloud computing?
    • Cloud computing is a model for delivering computing services over the internet on-demand, including storage, processing power, and software applications. It allows users to access resources and services from anywhere with an internet connection without the need for local infrastructure.
12. What is artificial intelligence (AI)?
    • Artificial intelligence is the simulation of human intelligence by computer systems, including learning, reasoning, problem-solving, perception, and natural language understanding. AI technologies aim to enable machines to perform tasks that typically require human intelligence.
13. What is machine learning?
    • Machine learning is a subset of artificial intelligence that focuses on the development of algorithms and models that enable computers to learn from and make predictions or decisions based on data without explicit programming.
14. What is a database?
    • A database is an organized collection of data stored and accessed electronically from a computer system. It typically consists of tables, rows, and columns, and allows for efficient storage, retrieval, and manipulation of structured data.
15. What is SQL?
    • Structured Query Language (SQL) is a domain-specific language used to manage and manipulate data stored in relational database management systems (RDBMS). SQL enables users to perform tasks such as querying data, updating records, and creating and modifying database schemas.
16. What is encryption?
    • Encryption is the process of encoding data in such a way that only authorized parties can access and decode it. It is commonly used to secure sensitive information, such as personal data, financial transactions, and communications, from unauthorized access or interception.
17. What is a cookie?
    • A cookie is a small piece of data stored on a user’s computer by a web browser while browsing a website. Cookies are used to track user behavior, remember user preferences, and maintain user sessions across multiple visits to a website.
18. What is a cache?
    • A cache is a hardware or software component that stores frequently accessed data or instructions to reduce the time required to access them from the main memory or storage. Caches improve the performance and efficiency of computer systems by providing faster access to frequently used resources.
19. What is a GUI?
    • A Graphical User Interface (GUI) is a type of user interface that allows users to interact with electronic devices using graphical icons, menus, and visual indicators, rather than text-based commands. GUIs are commonly used in operating systems, applications, and websites to facilitate user-friendly interaction.
20. What is virtualization?
    • Virtualization is the process of creating virtual instances of computing resources, such as virtual machines, storage devices, or networks, using software to abstract and partition physical hardware resources. Virtualization enables efficient resource utilization, flexibility, and scalability in
    IT infrastructure.
21. What is a spreadsheet?
    • A spreadsheet is a computer application used to organize, analyze, and manipulate numerical data in tabular form. It consists of rows and columns, where each intersection, or cell, can contain data, formulas, or functions for calculations.
22. What is a programming language?
    • A programming language is a formal language used to write instructions or code that can be executed by a computer to perform specific tasks or solve problems. Programming languages provide syntax and semantics for expressing algorithms and data structures.
23. What is a compiler?
    • A compiler is a program that translates source code written in a high-level programming language into machine code or bytecode that can be executed by a computer. Compilers perform lexical analysis, syntax analysis, optimization, and code generation to convert source code into executable code.
24. What is an interpreter?
    • An interpreter is a program that reads and executes source code written in a high-level programming language line by line, without the need for compilation. Interpreters translate source code into machine code or bytecode on the fly, executing each instruction as it is encountered.
25. What is version control?
    • Version control is a system that manages changes to documents, files, or code over time, enabling multiple contributors to collaborate on a project, track revisions, and maintain a history of changes. Version control systems, such as Git and Subversion, provide features for branching, merging, and conflict resolution.
26. What is an API?
    • An Application Programming Interface (API) is a set of rules, protocols, and tools that allows different software applications to communicate and interact with each other. APIs define how software components should interact, enabling integration and interoperability between systems.
27. What is open source software?
    • Open source software is software that is distributed with its source code freely available for anyone to view, modify, and redistribute. Open source projects typically follow principles of transparency, collaboration, and community-driven development.
28. What is a bug?
    • In software development, a bug is an error, flaw, or defect in a computer program that causes it to produce incorrect or unexpected results. Bugs can range from minor issues to critical failures and are typically fixed through debugging and testing.
29. What is a protocol?
    • A protocol is a set of rules, standards, or conventions that governs communication and data exchange between computer systems or devices. Protocols define the format, sequence, and timing of messages and ensure interoperability between different systems.
30. What is a network?
    • A network is a group of interconnected computers, devices, or systems that can communicate and share resources with each other. Networks can be classified based on their geographical scope (LAN, WAN) or their communication technologies (wired, wireless).
31. What is a server?
    • A server is a computer or device that provides resources, services, or functionality to other computers or devices on a network. Servers can serve various purposes, such as hosting websites, managing data, providing file storage, or running applications.
32. What is a client?
    • A client is a computer or device that requests and receives resources, services, or functionality from a server on a network. Clients interact with servers through protocols such as HTTP, FTP, or SMTP to access websites, download files, or send emails.
33. What is a URL?
    • A Uniform Resource Locator (URL) is a web address used to specify the location of a resource on the internet. It typically consists of a protocol (such as HTTP or HTTPS), a domain name, and a path to the resource.
34. What is a web server?
    • A web server is a software application or hardware device that serves web content, such as HTML pages, images, or multimedia files, to clients over the World Wide Web. Web servers handle incoming HTTP requests from clients and respond with the requested content.
35. What is a web browser?
    • A web browser is a software application used to access and view websites on the World Wide Web. Web browsers interpret HTML, CSS, and JavaScript code to render web pages and provide features such as navigation, bookmarks, and tabbed browsing.
36. What is a search engine?
    • A search engine is a software system that retrieves and displays information from the World Wide Web in response to user queries or search terms. Search engines use algorithms to crawl, index, and rank web pages based on relevance to provide search results.
37. What is HTML?
    • HyperText Markup Language (HTML) is the standard markup language used to create and design web pages. It defines the structure and layout of web content using tags and attributes.
38. What is CSS?
    • Cascading Style Sheets (CSS) is a style sheet language used to describe the presentation of a document written in HTML. It defines how HTML elements are displayed on screen, in print, or other media.
39. What is JavaScript?
    • JavaScript is a programming language used to add interactivity and dynamic behavior to web pages. It is commonly used for client-side scripting in web development.
40. What is a cookie?
    • A cookie is a small piece of data stored on a user’s computer by a web browser while browsing a website. Cookies are used to track user behavior, remember user preferences, and maintain user sessions across multiple visits to a website.
41. What is a database?
    • A database is an organized collection of data stored and accessed electronically from a computer system. It typically consists of tables, rows, and columns, and allows for efficient storage, retrieval, and manipulation of structured data.
42. What is SQL?
    • Structured Query Language (SQL) is a domain-specific language used to manage and manipulate data stored in relational database management systems (RDBMS). SQL enables users to perform tasks such as querying data, updating records, and creating and modifying database schemas.
43. What is a firewall?
    • A firewall is a network security device or software that monitors and controls incoming and outgoing network traffic based on predetermined security rules. It acts as a barrier between a trusted internal network and untrusted external networks, such as the internet.
44. What is a virus?
    • A computer virus is a type of malicious software that replicates itself by modifying other computer programs and inserting its own code. Viruses can cause harm to computer systems by corrupting files, stealing data, or disrupting normal operations.
45. What is a LAN?
    • A Local Area Network (LAN) is a network that connects computers and devices within a limited geographical area, such as a home, office, or school. LANs typically use wired or wireless connections to facilitate communication and resource sharing among connected devices.
46. What is a WAN?
    • A Wide Area Network (WAN) is a network that connects computers and devices over a wide geographical area, often spanning multiple cities, countries, or continents. WANs use public or private communication links, such as leased lines or satellite connections, to connect geographically dispersed locations.
47. What is a modem?
    • A modem is a device that modulates and demodulates digital data to enable communication between computers or other digital devices over a network, such as the internet or a telephone line.
48. **What is a router?**
    • A router is a network device that forwards data packets between computer networks. It acts as an intermediary between devices on a local network and external networks, such as the internet, by determining the best path for data transmission.
49. What is cloud computing?
    • Cloud computing is a model for delivering computing services over the internet on-demand, including storage, processing power, and software applications. It allows users to access resources and services from anywhere with an internet connection without the need for local infrastructure.
50. What is artificial intelligence (AI)?
    • Artificial intelligence is the simulation of human intelligence by computer systems, including learning, reasoning, problem-solving, perception, and natural language understanding. AI technologies aim to enable machines to perform tasks that typically require human intelligence.
51. What is machine learning?
    • Machine learning is a subset of artificial intelligence that focuses on the development of algorithms and models that enable computers to learn from and make predictions or decisions based on data without explicit programming.
52. What is a database?
    • A database is an organized collection of data stored and accessed electronically from a computer system. It typically consists of tables, rows, and columns, and allows for efficient storage, retrieval, and manipulation of structured data.
53. What is SQL?
    • Structured Query Language (SQL) is a domain-specific language used to manage and manipulate data stored in relational database management systems (RDBMS). SQL enables users to perform tasks such as querying data, updating records, and creating and modifying database schemas.
54. What is encryption?
    • Encryption is the process of encoding data in such a way that only authorized parties can access and decode it. It is commonly used to secure sensitive information, such as personal data, financial transactions, and communications, from unauthorized access or interception.
55. What is a cookie?
    • A cookie is a small piece of data stored on a user’s computer by a web browser while browsing a website. Cookies are used to track user behavior, remember user preferences, and maintain user sessions across multiple visits to a website.
56. What is a cache?
    • A cache is a hardware or software component that stores frequently accessed data or instructions to reduce the time required to access them from the main memory or storage. Caches improve the performance and efficiency of computer systems by providing faster access to frequently used resources.
57. What is a GUI?
    • A Graphical User Interface (GUI) is a type of user interface that allows users to interact with electronic devices using graphical icons, menus, and visual indicators, rather than text-based commands. GUIs are commonly used in operating systems, applications, and websites to facilitate user-friendly interaction.
58. What is virtualization?
    • Virtualization is the process of creating virtual instances of computing resources, such as virtual machines, storage devices, or networks, using software to abstract and partition physical hardware resources. Virtualization enables efficient resource utilization, flexibility, and scalability in IT infrastructure.
59. What is a spreadsheet?
    • A spreadsheet is a computer application used to organize, analyze, and manipulate numerical data in tabular form. It consists of rows and columns, where each intersection, or cell, can contain data, formulas, or functions for calculations.
60. What is a programming language?
    • A programming language is a formal language used to write instructions or code that can be executed by a computer to perform specific tasks or solve problems. Programming languages provide syntax and semantics for expressing algorithms and data structures.
61. What is a compiler?
    • A compiler is a program that translates source code written in a high-level programming language into machine code or bytecode that can be executed by a computer. Compilers perform lexical analysis, syntax analysis, optimization, and code generation to convert source code into executable code.
62. What is an interpreter?
    • An interpreter is a program that reads and executes source code written in a high-level programming language line by line, without the need for compilation. Interpreters translate source code into machine code or bytecode on the fly, executing each instruction as it is encountered.
63. What is version control?
    • Version control is a system that manages changes to documents, files, or code over time, enabling multiple contributors to collaborate on a project, track revisions, and maintain a history of changes. Version control systems, such as Git and Subversion, provide features for branching, merging, and conflict resolution.
64. What is an API?
    • An Application Programming Interface (API) is a set of rules, protocols, and tools that allows different software applications to communicate and interact with each other. APIs define how software components should interact, enabling integration and interoperability between systems.
65. What is open source software?
    • Open source software is software that is distributed with its source code freely available for anyone to view, modify, and redistribute. Open source projects typically follow principles of transparency, collaboration, and community-driven development.
66. What is a bug?
    • In software development, a bug is an error, flaw, or defect in a computer program that causes it to produce incorrect or unexpected results. Bugs can range from minor issues to critical failures and are typically fixed through debugging and testing.
67. What is a protocol?
    • A protocol is a set of rules, standards, or conventions that governs communication and data exchange between computer systems or devices. Protocols define the format, sequence, and timing of messages and ensure interoperability between different systems.
68. What is a network?
    • A network is a group of interconnected computers, devices, or systems that can communicate and share resources with each other. Networks can be classified based on their geographical scope (LAN, WAN) or their communication technologies (wired, wireless).
69. What is a server?
    • A server is a computer or device that provides resources, services, or functionality to other computers or devices on a network. Servers can serve various purposes, such as hosting websites, managing data, providing file storage, or running applications.
70. What is a client?
    • A client is a computer or device that requests and receives resources, services, or functionality from a server on a network. Clients interact with servers through protocols such as HTTP, FTP, or SMTP to access websites, download files, or send emails.
71. What is a URL?
    • A Uniform Resource Locator (URL) is a web address used to specify the location of a resource on the internet. It typically consists of a protocol (such as HTTP or HTTPS), a domain name, and a path to the resource.
72. What is a web server?
    • A web server is a software application or hardware device that serves web content, such as HTML pages, images, or multimedia files, to clients over the World Wide Web. Web servers handle incoming HTTP requests from clients and respond with the requested content.
73. What is a web browser?
    • A web browser is a software application used to access and view websites on the World Wide Web. Web browsers interpret HTML, CSS, and JavaScript code to render web pages and provide features such as navigation, bookmarks, and tabbed browsing.
74. What is a search engine?
    • A search engine is a software system that retrieves and displays information from the World Wide Web in response to user queries or
    search terms. Search engines use algorithms to crawl, index, and rank web pages based on relevance to provide search results.
75. What is HTML?
    • HyperText Markup Language (HTML) is the standard markup language used to create and design web pages. It defines the structure and layout of web content using tags and attributes.
76. What is CSS?
    • Cascading Style Sheets (CSS) is a style sheet language used to describe the presentation of a document written in HTML. It defines how HTML elements are displayed on screen, in print, or other media.
77. What is JavaScript?
    • JavaScript is a programming language used to add interactivity and dynamic behavior to web pages. It is commonly used for client-side scripting in web development.
78. What is a cookie?
    • A cookie is a small piece of data stored on a user’s computer by a web browser while browsing a website. Cookies are used to track user behavior, remember user preferences, and maintain user sessions across multiple visits to a website.
79. What is a database?
    • A database is an organized collection of data stored and accessed electronically from a computer system. It typically consists of tables, rows, and columns, and allows for efficient storage, retrieval, and manipulation of structured data.
80. What is SQL?
    • Structured Query Language (SQL) is a domain-specific language used to manage and manipulate data stored in relational database management systems (RDBMS). SQL enables users to perform tasks such as querying data, updating records, and creating and modifying database schemas.
81. What is encryption?
    • Encryption is the process of encoding data in such a way that only authorized parties can access and decode it. It is commonly used to secure sensitive information, such as personal data, financial transactions, and communications, from unauthorized access or interception.
82. What is a cookie?
    • A cookie is a small piece of data stored on a user’s computer by a web browser while browsing a website. Cookies are used to track user behavior, remember user preferences, and maintain user sessions across multiple visits to a website.
83. What is a cache?
    • A cache is a hardware or software component that stores frequently accessed data or instructions to reduce the time required to access them from the main memory or storage. Caches improve the performance and efficiency of computer systems by providing faster access to frequently used resources.
84. What is a GUI?
    • A Graphical User Interface (GUI) is a type of user interface that allows users to interact with electronic devices using graphical icons, menus, and visual indicators, rather than text-based commands. GUIs are commonly used in operating systems, applications, and websites to facilitate user-friendly interaction.
85. What is virtualization?
    • Virtualization is the process of creating virtual instances of computing resources, such as virtual machines, storage devices, or networks, using software to abstract and partition physical hardware resources. Virtualization enables efficient resource utilization, flexibility, and scalability in IT infrastructure.
86. What is a spreadsheet?
    • A spreadsheet is a computer application used to organize, analyze, and manipulate numerical data in tabular form. It consists of rows and columns, where each intersection, or cell, can contain data, formulas, or functions for calculations.
87. What is a programming language?
    • A programming language is a formal language used to write instructions or code that can be executed by a computer to perform specific tasks or solve problems. Programming languages provide syntax and semantics for expressing algorithms and data structures.
88. What is a compiler?
    • A compiler is a program that translates source code written in a high-level programming language into machine code or bytecode that can be executed by a computer. Compilers perform lexical analysis, syntax analysis, optimization, and code generation to convert source code into executable code.
89. What is an interpreter?
    • An interpreter is a program that reads and executes source code written in a high-level programming language line by line, without the need for compilation. Interpreters translate source code into machine code or bytecode on the fly, executing each instruction as it is encountered.
90. What is version control?
    • Version control is a system that manages changes to documents, files, or code over time, enabling multiple contributors to collaborate on a project, track revisions, and maintain a history of changes. Version control systems, such as Git and Subversion, provide features for branching, merging, and conflict resolution.
91. What is an API?
    • An Application Programming Interface (API) is a set of rules, protocols, and tools that allows different software applications to communicate and interact with each other. APIs define how software components should interact, enabling integration and interoperability between systems.

These questions cover various aspects of computer science and technology, ranging from hardware and software to networking, programming, and security. They can serve as a foundation for understanding the fundamental concepts and principles of computing and can be helpful for both beginners and experienced individuals in the field of technology.