Internet

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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 Questions. What is the Internet?. A Network of Computer Networks
Transcript
Internetجامعة أم القرىقسم السنة التحضيريهاعداد: أعضاء هيئة التدريسTalk Flow!
  • Introduction to the Internet
  • Brief history
  • Explaining basic protocols
  • Naming on the net
  • HTML
  • Using search engines
  • Questions
  • 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.
  • T3BackboneNetworkNetworkT3BackboneInternetT3BackboneInternetInternetWorld Wide Web?
  • A part of the Internet
  • www1, www2 etc.,
  • Based on hypertext and hypertext transfer protocol (HTML & HTTP)
  • Supports multiple media - Multimedia
  • Interactive, dynamic 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
  • 1973 - 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:
  • Email – 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
  • http://www.crida.ernet.in/dcs/proposal.htm
  • http = the protocolwww = the host computer or server nameblast = third level domainncbl = second level domainorg = top level domainsequence = directory namevirtual = file namehtm = file type / extensionGetting 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
  • 220.226.64.35
  • 10.15.3.20 (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
  • Related Search
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