Internet جامعة أم القرى قسم السنة التحضيريه اعداد : أعضاء هيئة التدريس

Talk Flow! Introduction to the Internet Brief history Explaining basic protocols Naming on the net HTML Using search engines

What is the Internet? A Network of Computer Networks Started as early as the 1960s Built to work even if a large part of the network fails Intranet is not the same as Internet Decentralized Client – Server model Supported by various gateways and high speed backbone connections.

Internet Network Internet Network T3 Backbone T3 Backbone T3 Backbone

World Wide Web? A part of the Internet www1, www2 etc., Based on hypertext and hypertext transfer protocol (HTML & HTTP) Http says how to pass the info, HTML says how to organize the raw data and present it at the other side. Supports multiple media – Multimedia Interactive, dynamic HTML Dynamic HTML is a collective term for a combination of Hypertext Markup Language (HTML) tags and options that can make Web pages more animated and interactive than previous versions of HTML.

Who owns the Internet? The Internet Corporation for Assigned Names and Numbers (ICANN) oversees registrations. InterNIC—central service to reserve domain names (lots of issues arising with “cyberquatting…” Whois – domain name lookup

Brief History of the Internet 1960s - Department of Defense initiative ARPANET ARPA launches the Internetting Project to explore the possibilities of linking networks 1980 – First Virus halts the Internet 1984 – DNS Introduced (Names rather than numbers) 1999 – Internet Banking

Services through the net Major services: – Electronic Mail FTP – File Transfer Protocol Gopher Newsgroups Telnet – Remote session WAIS – Wide Area Information System WWW – World Wide Web

How to read an URL

Getting a Domain Name? Top Domains: edu – Educational Institutions com – Company / Commercial Organizations org – Non-profit Organizations net – Network, network of sites mil – Military Installations gov – Government sites Sub Domains: in - India jp - Japan uk – United Kingdom

Identifying a PC on the Internet IP Number (Intranet, Local IP) To find your IP number on Windows Execute ipconfig on your command prompt – XP winipcgf - 98

Bandwidth Speed of data transfer through the network Access through: 28.8 bps (bits per second) modem 56.6 modem ISDN T1/T3 – High speed Cable DSL

Hypertext Hypertext, a method of preparing text that allows readers to choose their own pathways through the material, is invented by Ted Nelson. The underlined word represents a hyperlink that lets the reader click and jump to a new page. Provides interactive browsing

Creating Web Documents Editors: WYSIWYG Frontpage, Dreamweaver or N-Vu Text Notepad Word processors MS - Word

Browsers and Specifications Browser software allows us to view, hear, retrieve information created for the web Internet Explorer, Netscape Navigator, Lynx For design, you must check pages in both browsers, with different versions