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IT Terms

Below is an alphabetical list of 50 common IT terms with short definitions:

  1. Algorithm: A step-by-step procedure or formula for solving a problem or completing a task, often used in computer programming.
  2. API (Application Programming Interface): A set of rules and protocols that allows different software applications to communicate with each other.
  3. Backup: A copy of data stored separately from the original source to protect against data loss in case of hardware failure, theft, or other disasters.
  4. Bandwidth: The maximum rate of data transfer across a network or internet connection, typically measured in bits per second (bps) or megabits per second (Mbps).
  5. Bluetooth: A wireless technology standard for exchanging data over short distances between devices, such as smartphones, tablets, and computers.
  6. Cloud Computing: The delivery of computing services, including storage, processing power, and software, over the internet, typically on a pay-as-you-go basis.
  7. Cybersecurity: Measures and practices designed to protect computer systems, networks, and data from unauthorized access, cyberattacks, and data breaches.
  8. Data Encryption: The process of converting plain text or data into a coded form (cipher) to prevent unauthorized access or interception.
  9. Firewall: A network security device or software that monitors and controls incoming and outgoing network traffic based on predetermined security rules.
  10. HTML (Hypertext Markup Language): The standard markup language used for creating and structuring web pages and web applications.
  11. IP Address (Internet Protocol Address): A unique numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication.
  12. JavaScript: A high-level programming language commonly used to create interactive effects within web browsers and web applications.
  13. LAN (Local Area Network): A computer network that connects devices within a limited geographic area, such as a home, office, or school.
  14. Malware: Malicious software designed to disrupt, damage, or gain unauthorized access to computer systems or data, including viruses, worms, Trojans, and ransomware.
  15. Operating System: Software that manages computer hardware and provides a platform for running applications, such as Windows, macOS, and Linux.
  16. Password: A secret combination of characters used to authenticate and gain access to a computer system, network, or online account.
  17. Phishing: A cyberattack technique used to trick individuals into providing sensitive information, such as passwords or financial data, by posing as a legitimate entity.
  18. Router: A networking device that forwards data packets between computer networks, allowing devices within the network to communicate with each other and access the internet.
  19. Server: A computer or software program that provides data or services to other computers or devices on a network, known as clients.
  20. Software: Programs and applications that run on a computer system, including operating systems, productivity software, and multimedia tools.
  21. SQL (Structured Query Language): A domain-specific language used for managing and manipulating relational databases, including querying, updating, and deleting data.
  22. SSD (Solid State Drive): A storage device that uses flash memory to store data persistently, offering faster read and write speeds than traditional hard disk drives (HDDs).
  23. URL (Uniform Resource Locator): A web address that specifies the location of a resource, such as a web page, file, or document, on the internet.
  24. Virtualization: The process of creating a virtual (rather than actual) version of a computer hardware platform, operating system, storage device, or network resource.
  25. VPN (Virtual Private Network): A secure network connection that allows users to access and transmit data over a public network (such as the internet) as if they were connected to a private network.
  26. Web Browser: Software used to access and view information on the World Wide Web, such as Google Chrome, Mozilla Firefox, Microsoft Edge, and Safari.
  27. Wi-Fi: A wireless networking technology that allows devices to connect to a local area network (LAN) using radio waves, typically within a limited range.
  28. XML (Extensible Markup Language): A markup language that defines rules for encoding documents in a format that is both human-readable and machine-readable.
  29. Firewall: A network security system designed to prevent unauthorized access to or from a private network by controlling incoming and outgoing traffic based on a set of predetermined rules.
  30. LAN (Local Area Network): A network that connects computers and devices in a limited geographical area such as a home, school, office building, or closely positioned group of buildings.
  31. Router: A networking device that forwards data packets between computer networks. Routers perform the traffic directing functions on the Internet.
  32. Modem: A hardware device that connects a computer or router to a broadband network, allowing access to the internet.
  33. HTML (Hypertext Markup Language): The standard markup language for documents designed to be displayed in a web browser.
  34. CSS (Cascading Style Sheets): A style sheet language used for describing the presentation of a document written in HTML or XML.
  35. JavaScript: A programming language that enables interactive web pages and is an essential part of web applications.
  36. Database: An organized collection of structured information, or data, typically stored electronically in a computer system.
  37. Server: A computer or system that provides resources, data, services, or programs to other computers, known as clients, over a network.
  38. Encryption: The process of converting data into a code to prevent unauthorized access.
  39. Firewall: A network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.
  40. Phishing: A cyberattack method used to trick individuals into revealing sensitive information, such as passwords or credit card numbers, typically by posing as a trustworthy entity.
  41. Cloud Computing: The delivery of computing services, including servers, storage, databases, networking, software, analytics, and intelligence, over the internet (“the cloud”) to offer faster innovation, flexible resources, and economies of scale.
  42. API (Application Programming Interface): A set of rules, protocols, and tools that allows different software applications to communicate with each other.
  43. DNS (Domain Name System): The internet’s system for converting alphabetic names into numeric IP addresses.
  44. LAN (Local Area Network): A network of computers and other devices that are connected in a relatively small area, typically within a single building or group of buildings.
  45. VPN (Virtual Private Network): A secure and private connection between a device and the internet, allowing users to send and receive data as if their device was directly connected to a private network.
  46. HTML (Hypertext Markup Language): The standard markup language for creating web pages and web applications.
  47. CSS (Cascading Style Sheets): A style sheet language used for describing the presentation of a document written in HTML or XML.
  48. JavaScript: A programming language used to create dynamic and interactive effects within web browsers.
  49. API (Application Programming Interface): A set of rules and protocols that allows different software applications to communicate with each other.
  50. Database: An organized collection of structured data, typically stored electronically in a computer system for easy access and retrieval

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