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Glossary
Look up any term from this course. Each entry links back to the lesson that taught it.
| Term | Definition | Lesson |
|---|---|---|
| Client–server model | A network model in which client devices send requests for services or data, and server computers process the requests and send back responses. | Client–Server Communication |
| Cloud computing | Delivering computing services — servers, storage, databases, software — over the internet on demand, paying for what is used, instead of owning and running the equipment yourself. | Cloud Computing |
| Creative Commons | A set of licences that let creators allow reuse of their work under conditions such as credit (BY) or non-commercial use (NC). | Using Online Sources Responsibly |
| Digital footprint | The record of a person's or organisation's online activity — posts, photos, comments and data — that others can find and that may last for years. | Blogs, Social Networking and Online Communication |
| DNS (Domain Name System) | The internet's directory service that translates human-readable domain names into the IP addresses computers use to find each other. | How a Web Page Reaches Your Browser |
| Domain name | The human-readable name of a website, e.g. ceylonleaf.lk. | How a Web Page Reaches Your Browser |
| E-commerce | Buying and selling goods or services over the internet. | Online Business |
| E-learning | Learning delivered through electronic devices and the internet, such as online courses, video lessons, virtual classrooms and online assessments. | E-learning and the Mobile Internet |
| Harvard referencing | A referencing style using (Author, Year) in the text and a full alphabetical reference list at the end. | Using Online Sources Responsibly |
| HTTP (Hypertext Transfer Protocol) | The protocol browsers and web servers use to request and send web pages and other resources. | How a Web Page Reaches Your Browser |
| HTTPS | HTTP with TLS encryption, protecting data between the browser and the server. | How a Web Page Reaches Your Browser |
| Internet | A global system of interconnected computer networks that exchange data using a common set of rules called TCP/IP. | What Is the Internet? |
| IP address | A unique number that identifies a device on a network so that data can be delivered to it. | What Is the Internet? |
| ISP (Internet Service Provider) | A company that provides connections to the internet. | What Is the Internet? |
| Mobile app | A program designed to run on a smartphone or tablet, usually installed from an app store. | E-learning and the Mobile Internet |
| Packet | A small unit of data sent across a network, containing part of a message plus the sender's and receiver's addresses and a sequence number. | What Is the Internet? |
| Payment gateway | A service that securely passes online card payments from a website to the banks. | Online Business |
| Phishing | A fraud in which attackers send messages pretending to be a trusted organisation to trick people into revealing passwords, card details or other information, or into opening malware. | |
| Plagiarism | Presenting someone else's words, ideas, images or code as your own without proper acknowledgement. | Using Online Sources Responsibly |
| Protocol | An agreed set of rules for communication between devices, e.g. TCP/IP, HTTP, SMTP. | What Is the Internet? |
| Router | A device that forwards data packets between networks towards their destination. | What Is the Internet? |
| SaaS / PaaS / IaaS | Cloud service models: software, platform, or infrastructure provided as a service. | Cloud Computing |
| SMTP / IMAP / POP3 | Email protocols: SMTP sends mail; IMAP keeps it on the server and syncs devices; POP3 downloads it to one device. | |
| URL (uniform resource locator) | The full address of a resource on the web, made up of the protocol, domain name, and path to the resource. | How a Web Page Reaches Your Browser |
| Web browser | Software that requests and displays web pages, e.g. Chrome, Edge, Firefox, Safari. | The Internet vs the World Wide Web |
| Web server | A computer and software that store websites and send pages to browsers on request. | The Internet vs the World Wide Web |
| World Wide Web (WWW) | An information system of web pages and other resources, identified by URLs and linked by hyperlinks, that are accessed over the internet using a web browser. | The Internet vs the World Wide Web |
More lessons in Internet Technologies · Previous: Course Exam