- Internet
- The internet is a public, global (wide area) network based on TCP/IP protocols. The TCP/IP protocol assigns every connected computer a unique Internet address also know as IP address, so that they can locate each other on the network and locate data.
- Intranet
- A private computer network design to meet the needs of a single organization or company that is based on TCP/IP.
- Extranet
- A intranet or a part of an intranet that have been selectively opened to strategic allies (such as customers, suppliers, research associates) to remotely access and/or edit information. For example on-line banking application.
Internet Concepts/Protocols
- Protocol
- An agreed set of rules that specifies the format of data as well as the rules to be followed to transmit it
- TCP
- Transmission control protocol.
- IP
- Internet protocol.
- HTTP
- Hyper Teaxt Transfer Protocol. A protocol used to request and transmit files, especially web pages and web page components, over the Internet or other computer networks.
- FTP
- File Transfer Protocol. A protocol used to transfer files between FTP servers and clients
- VoIP
- Voice over IP. Is the use of Internet based technologies to transmit voice-grade data over the internet.
World Wide Web (WWW) Concepts
- HTML
- Hyper Text Markup Language. A programming language that is used to create web pages.
- Web page
- A document written in HTML that may contain text, sounds, images, video clips, hyperlinks and other components.
- Web site
- A group of web pages that belong together and are linked to each other using hyperlinks.
- Hyperlink
- Is a icon, information object, underlined or otherwise emphasized word or phrase that displays another document (or resource) when clicked with the mouse.
- Web Server
- A special-purpose application software that accepts requests for information, processes these requests and sends the requested document(s).
- Web Browser
- A special-purpose application software that runs on an Internet-connected computer/devices and uses the HTTP to connect with web servers.
- URL
- Uniform resource locator. A string of characters that uniquely identifies and internet resource's type and location. Consider the following URL:
- http:// - Identiefies the transfer protocols
- www - Identifies the documents is accessable via the world wide web
- newegg.com - Indicates the domain name and type of the computer on which the document is stored
- /products/monitors/HpM.html - Fully describes the directory structure (where the document is stored) and includes the document name and extension.
Communicating globally using network-based tools
- E-mail
- Electronic Mail. E-mail application allow users to send an electronic message over a network to anyone with an email address and access to a computer system. E-mail address are always in the form of username@domain_name. For example TeachIT@teacher.com
- IRC
- Internet relay chat. IRC is a messing system that allow users to 'chat' with other people on the Internet using text messages. For example MSN & Yahoo messenger, Google Talk, etc....
Uses of the Internet
- Bulletin board
- A electronic forum that hosts posted messages and articles related to a common subject. For example Facebook Wall.
- Newsgroup
- An on-line discussion group or forum specifically focused on a particular area of interest.
- Blogging
- A blog or web log is a diary maintained by its author on the world wide web.
- Podcast
- A audio broadcast using the Internet that can be played back on an iPod or similar devices.
- E-commerce
- The use of the internet for selling goods and services
- E-learning
- The use of the internet to offer courses over the internet to individual learners.
