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The Internet

Chapter 13. The Internet. Internet- Interconnection and Networks. “the Net” Computers have played a significant role in our everyday life Growth in popularity and networking of computers, intercommunication An enigmatic computer gizmo games, music, and generally entertainment

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The Internet

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  1. Chapter 13 The Internet

  2. Internet- Interconnection and Networks • “the Net” • Computers have played a significant role in our everyday life • Growth in popularity and networking of computers, intercommunication • An enigmatic computer gizmo • games, music, and generally entertainment • much broader concept than mere entertainment and recreational activities • Revolutionizing and enhancing the ways of human interaction and communication.

  3. Internet … • It consists of thousands of separately administered networks of various sizes and types. Each of these networks comprises tens of thousands of computers. • Total number of users of the Internet is known to be in millions • unparalleled degree of communication • resource sharing • information access • The most powerful and important technological advancement since the introduction of the desktop computer

  4. Evolution of internet

  5. Owner Of Internet • No one company or country can be considered as owner of Internet • Ownership shared among various entities • Coordination: • Internet Society (ISOC) • Internet Engineering Task Force (IETF) • Internet Architecture Board (IAB) • In the US – • ICANN – Internet names and port numbers

  6. Anatomy of Internet • Host • Application programs to avail services • Network • Two or more hosts communicating • Router • Routes the data to destination A B

  7. Internet Terminology • World Wide Web (WWW) • the network of HTML files stored on Web servers and interlinked with hyperlinks • Web page • a hypertext document on the World Wide Web. • Website • A set of related pages published by an organization. • Home page • the Web page that appears when you start the browser, the index or default page of a particular Web server, folder, or person's Web site. • Browser • a software application used to access the World Wide Web and view web pages

  8. Internet Terminology … URL http://www.northsouth.edu/courses/mis-105.html • hypertext transfer protocol = Protocol used for all files on the web. • The added s indicates a higher level of security for information on those pages. • Web server Name/Domain Name • Path, Filename, Domain Name

  9. Hypertext • Electronic files containing links that can be selected to move to another part of the document or to another document altogether. • A hyperlink is a command embedded in text or an object which, when clicked, will open another file, take you to another place in the same file or to a new location on the internet.

  10. Internet Service Provider (ISP) • Organization connected permanently to the internet, leases temporary connections to subscribers.

  11. Servers … • Servers • computer that receives and fulfills requests to provide specific services on a network. • A Web server • is a computer that delivers requested Web pages to your computer • Download • to copy electronic data from another computer to your computer over a network. • Upload • to transfer a file from your computer to another computer.

  12. Protocols • SMTP: The Simple Mail Transfer Protocol utility translates between local and Internet mail formats, allowing clients to send/receive Internet e-mail. • FTP: The File Transfer Protocol utility enables file transfers to and from the server. • TCP/IP: the standard suite of protocols used to connect computers on the Internet and onintranets. • NNTP: Network News Transport Protocol • HTTP: See before Telnet FTP SMTP NNTP TCP IP

  13. Connecting to Internet • Computer & Modem • Internet connection Types • Dialup • Cable Connection • DSL Broadband • Dedicated Leased Line • ISDN • Wireless Connection

  14. Web Browser • Online Demonstration

  15. Internet Usages • E-Mail • FTP • Telnet (Remote Login) • IRC • Chatting and Instant Messaging • Internet Telephony • Video Conferencing • Commerce through Internet • Mailing Lists

  16. Electronic Mail • Email Address Structure • login@mailserver • Checking Email • Sending Email • Email Attachment

  17. How Email Works

  18. Netiquette • Rule 1: Remember the Human • Rule 2: Adhere to the same standards of behavior online that you follow in real life • Rule 3: Know where you are in cyberspace • Rule 4: Respect other people's time and bandwidth • Rule 5: Make yourself look good online • Rule 6: Share expert knowledge • Rule 7: Help keep flame wars under control • Rule 8: Respect other people's privacy • Rule 9: Don't abuse your power • Rule 10: Be forgiving of other people's mistakes • ….

  19. Search Engines

  20. Refining Your Search • Logical operators • AND • OR • NOT • “” Double Quotes • () parenthesis for grouping (X OR Y) • * Asterisk *biryani

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