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Basic computer interview Q&A

Q&A Top 100 in Basic Computer

  1. What is a computer?
    Answer: A computer is an electronic device that can receive, process, store, and output data.
  2. What are the main components of a computer?
    Answer: The main components of a computer are the central processing unit (CPU), memory (RAM), storage devices (hard drive/SSD), and input/output devices (keyboard, mouse, monitor).
  3. What is the CPU?
    Answer: The CPU (Central Processing Unit) is the “brain” of the computer responsible for executing instructions and performing calculations.
  4. What is RAM?
    Answer: RAM (Random Access Memory) is the temporary memory used by the computer to store data and programs currently in use.
  5. What is a motherboard?
    Answer: The motherboard is the main circuit board that connects and provides power to all other computer components.
  6. What is an operating system?
    Answer: An operating system (OS) is software that manages computer hardware and provides services for applications to run.
  7. What are the most common operating systems?
    Answer: Common operating systems include Windows, macOS, Linux, and Android.
  8. What is a file system?
    Answer: A file system is a method used to organize and store data on storage devices.
  9. What is a file path?
    Answer: A file path is the location of a file or folder in the file system, expressed in a hierarchical manner.
  10. What is a browser?
    Answer: A browser is software used to access and view websites on the internet.
  11. What is a URL?
    Answer: A URL (Uniform Resource Locator) is the address used to access a website or web page.
  12. What is a search engine?
    Answer: A search engine is a software system that retrieves information from the internet based on user queries.
  13. What is a cookie?
    Answer: A cookie is a small piece of data stored on a user’s computer by a website to remember user preferences and improve the browsing experience.
  14. What is a virus?
    Answer: A virus is a malicious software program that can infect and damage computer systems.
  15. What is a firewall?
    Answer: A firewall is a security system that protects a computer network from unauthorized access and attacks.
  16. What is a network?
    Answer: A network is a collection of interconnected computers and devices that can communicate and share resources.
  17. What is the internet?
    Answer: The internet is a global network of interconnected computer networks that enables communication and information sharing.
  18. What is an IP address?
    Answer: An IP address is a unique numerical label assigned to each device connected to a network, allowing them to be identified.
  19. What is a web server?
    Answer: A web server is a computer that stores and serves web pages to clients over the internet.
  20. What is cloud computing?
    Answer: Cloud computing is the delivery of computing services over the internet, including storage, databases, software, and more.
  21. What is a backup?
    Answer: A backup is a copy of data created to prevent data loss in case of hardware failure or other issues.
  22. What is a peripheral?
    Answer: A peripheral is an external device connected to a computer, such as a printer, scanner, or external hard drive.
  23. What is a USB?
    Answer: USB (Universal Serial Bus) is a common interface used to connect devices like keyboards, mice, and external storage to computers.
  24. What is a graphics card?
    Answer: A graphics card is a component responsible for rendering images and graphics on a computer’s display.
  25. What is a spreadsheet?
    Answer: A spreadsheet is a software application used for organizing, analyzing, and manipulating data in tabular form.
  26. What is a database?
    Answer: A database is a structured collection of data, organized and managed for easy retrieval and manipulation.
  27. What is a cursor?
    Answer: A cursor is a pointer or an indicator on a computer screen that responds to input from a mouse or keyboard.
  28. What is a software license?
    Answer: A software license is a legal agreement that governs the use of software.
  29. What is HTML?
    Answer: HTML (Hypertext Markup Language) is a markup language used to create web pages.
  30. What is CSS?
    Answer: CSS (Cascading Style Sheets) is a style sheet language used to define the layout and presentation of HTML documents.
  31. What is JavaScript?
    Answer: JavaScript is a programming language used to add interactivity and dynamic content to web pages.
  32. What is the difference between hardware and software?
    Answer: Hardware refers to the physical components of a computer, while software refers to the programs and applications that run on the computer.
  33. What is an input device?
    Answer: An input device allows users to enter data and commands into a computer, such as a keyboard or mouse.
  34. What is an output device?
    Answer: An output device displays or presents data processed by a computer, such as a monitor or printer.
  35. What is a command-line interface (CLI)?
    Answer: A command-line interface is a text-based method of interacting with a computer using commands.
  36. What is a graphical user interface (GUI)?
    Answer: A graphical user interface is a visual way of interacting with a computer using icons, menus, and windows.
  37. What is a desktop application?
    Answer: A desktop application is software designed to be run on a personal computer rather than a web browser or mobile device.
  38. What is a program?
    Answer: A program is a set of instructions that tells a computer how to perform specific tasks.
  39. What is an algorithm?
    Answer: An algorithm is a step-by-step procedure or formula used to solve a problem or perform a specific task.
  40. What is debugging?
    Answer: Debugging is the process of identifying and fixing errors or bugs in a program.
  41. What is object-oriented programming (OOP)?
    Answer: Object-oriented programming is a programming paradigm that organizes code into objects with properties and methods.
  42. What is a compiler?
    Answer: A compiler is software that translates source code written in a programming language into machine code that a computer can execute.
  43. What is an interpreter?
    Answer: An interpreter is software that directly executes source code without the need for compilation.
  44. What is a bit?
    Answer: A bit (binary digit) is the smallest unit of data in a computer, representing a 0 or a 1.
  45. What is a byte?
    Answer: A byte is a unit of digital information composed of eight bits.
  46. What is a gigabyte (GB)?
    Answer: A gigabyte is approximately one billion bytes of data.
  47. What is a terabyte (TB)?
    Answer: A terabyte is approximately one trillion bytes of data.
  48. What is a petabyte (PB)?
    Answer: A petabyte is approximately one quadrillion bytes of data.
  49. What is a megahertz (MHz)?
    Answer: A megahertz is one million cycles per second, used to measure the speed of a computer’s processor.
  50. What is a gigahertz (GHz)?
    Answer: A gigahertz is one billion cycles per second, used to measure the speed of a computer’s processor.
  51. What is a modem?
    Answer: A modem is a device that converts digital data to analog signals for transmission over telephone lines and vice versa.
  52. What is a mouse?
    Answer: A mouse is a pointing device used to control the cursor on a computer screen.
  53. What is a keyboard?
    Answer: A keyboard is an input device used to enter text and commands into a computer.
  54. What is a barcode?
    Answer: A barcode is an optical representation of data used for tracking products and inventory.
  55. What is OCR?
    Answer: OCR (Optical Character Recognition) is technology that converts scanned text or images into editable and searchable data.
  56. What is a BIOS?
    Answer: BIOS (Basic Input/Output System) is firmware used to initialize and control hardware during the computer’s boot process.
  57. What is a GUI builder?
    Answer: A GUI builder is software that allows developers to design graphical user interfaces visually.
  58. What is virtual memory?
    Answer: Virtual memory is a technique that uses a portion of the hard drive as an extension of RAM to handle data overflow.
  59. What is system software?
    Answer: System software is software that manages and controls computer hardware and provides services for applications.
  60. What is application software?
    Answer: Application software is software designed for specific tasks or functions, such as word processing or spreadsheet applications.
  61. What is a screenshot?
    Answer: A screenshot is an image capture of what is displayed on a computer screen.
  62. What is a cursor?
    Answer: A cursor is a graphical representation of the current position on a computer screen.
  63. What is a desktop icon?
    Answer: A desktop icon is a small graphic or symbol that represents a file, folder, or application on the desktop.
  64. What is a URL?
    Answer: A URL (Uniform Resource Locator) is the address used to access a website or web page.
  65. What is a hyperlink?
    Answer: A hyperlink is a reference or connection to another web page or resource on the internet.
  66. What is a LAN?
    Answer: A LAN (Local Area Network) is a network of computers and devices located within a limited geographical area, like an office or home.
  67. What is a WAN?
    Answer: A WAN (Wide Area Network) is a network that spans a large geographical area, connecting LANs and other networks.
  68. What is a protocol?
    Answer: A protocol is a set of rules and conventions used for communication between devices on a network.
  69. What is encryption?
    Answer: Encryption is the process of converting data into a code to protect it from unauthorized access.
  70. What is decryption?
    Answer: Decryption is the process of converting encrypted data back to its original form.
  71. What is a cloud backup?
    Answer: A cloud backup is a method of storing data on remote servers over the internet to prevent data loss.
  72. What is a hotspot?
    Answer: A hotspot is a public location that provides wireless internet access to users.
  73. What is a cache?
    Answer: A cache is a temporary storage area used to store frequently accessed data for quicker retrieval.
  74. What is a flash drive?
    Answer: A flash drive is a portable storage device that uses flash memory to store data.
  75. What is a gigabit?
    Answer: A gigabit is one billion bits of data.
  76. What is a program file?
    Answer: A program file is a file containing executable code, usually with a .exe or .app extension.
  77. What is a document file?
    Answer: A document file is a file used to store text and formatting, such as .docx or .pdf files.
  78. What is a spreadsheet file?
    Answer: A spreadsheet file is a file used to store data in rows and columns, often with .xlsx or .csv extensions.
  79. What is a multimedia file?
    Answer: A multimedia file is a file that includes various forms of media, such as images, audio, or video.
  80. What is a program shortcut?
    Answer: A program shortcut is an icon or link on the desktop or Start menu that allows quick access to a program.
  81. What is a system tray?
    Answer: The system tray is a part of the taskbar that displays system icons and notifications.
  82. What is a software update?
    Answer: A software update is a new version or patch released to fix bugs or improve features in an existing program.
  83. What is a user account?
    Answer: A user account is a profile that allows a specific user to access and use a computer.
  84. What is a password?
    Answer: A password is a secret combination of characters used to verify a user’s identity.
  85. What is a computer network?
    Answer: A computer network is a collection of interconnected computers and devices that can communicate and share resources.
  86. What is an intranet?
    Answer: An intranet is a private network within an organization that allows employees to share information and collaborate.
  87. What is an extranet?
    Answer: An extranet is a private network that allows authorized external users to access certain information from an organization.
  88. What is a server?
    Answer: A server is a powerful computer or software system that provides services to other computers and devices on a network.
  89. What is a client-server model?
    Answer: The client-server model is a networking architecture where client devices request services from a central server.
  90. What is a peer-to-peer network?
    Answer: A peer-to-peer network is a decentralized network where devices communicate directly with each other without a central server.
  91. What is a router?
    Answer: A router is a networking device that forwards data packets between different networks.
  92. What is an IP address?
    Answer: An IP address is a unique numerical label assigned to each device on a network, allowing them to be identified.
  93. What is a domain name?
    Answer: A domain name is a human-readable address that represents the IP address of a website.
  94. What is a DNS server?
    Answer: A DNS server is a server that translates domain names into IP addresses.
  95. What is DHCP?
    Answer: DHCP (Dynamic Host Configuration Protocol) is a network protocol that automatically assigns IP addresses to devices.
  96. What is a firewall?
    Answer: A firewall is a security device that filters and controls incoming and outgoing network traffic.
  97. What is a modem?
    Answer: A modem is a device that modulates and demodulates signals to enable data transmission over communication lines.
  98. What is a router?
    Answer: A router is a networking device that forwards data packets between different networks.
  99. What is a switch?
    Answer: A switch is a networking device that connects devices within a local network and forwards data between them.
  100. What is bandwidth?
    Answer: Bandwidth is the maximum data transfer rate of a network or internet connection.