These pages are written in Hypertext Markup Language (HTML). Every website has an address or Uniform Resource Locator (URL). The URL is formed by the protocol, domain, directory and the document name.
EMAIL An electronic mail or email is the transmission of messages and files via a computer network. A user utilises an email program to create, send, receive, forward, store, print and delete email messages. Some emails are called web-based email like Yahoo Mail and Hotmail.
LESSON 110 ADVANCED NETWORKING
PERSONAL AREA NETWORK (PAN)
THE INTERNET RELAY CHAT (IRC) The Internet Relay Chat (IRC) is a system for chatting that involves a set of rules and conventions, and client/server software. A chat is a real-time typed conversation that takes place on a computer. A chat room is a location on an Internet server that permits users to chat with each other. Anyone in the chat room can participate in the conversation, which usually is specific to a particular topic.
A Personal Area Network (PAN) is a computer network used for communication among computer devices including PCs, laptops, printers, telephones, digital cameras, mobile phones, video game consoles and personal digital assistants, close to one person. Personal Area Networks may be wired with USB port, Firewire port, Infrared (IrDA) and Bluetooth technologies. Bluetooth is the popular wireless PAN used by most people, especially the mobile phone technologies, and it applies the IEEE 802.15.1 standards.
SEARCH ENGINES Search engines are special websites on the Internet to help you find information you need. Different search engines will serve different purposes, for example:
VIRTUAL PRIVATE NETWORK (VPN)
Google Scholar (http://scholar.google.com/) is for searching authoritative and scholarly sites. Google (http://www.google.com/) is for searching valuable or relevant sites with rankings. Yahoo News (http://dailynews.yahoo.com) is for searching opinions on current issues. Wikipedia (http://www.wikipedia.org/) it is an open source for encyclopedia 252
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