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ITBIS105 4
- 1. The Internet andWorld Wide Web ITBIS 105
- 2. The Internet Whatis the Internet ? Worldwide collection of networks that connects millions of computers
- 3. History of theInternet How did the Internet originate? Became functional September 1969 ARPANET Networking project by Pentagon’s Advanced Research Projects Agency (ARPA) Goal: To allow scientists at different locations to share information
- 4. History of theInternet How has the Internet grown? Today More than 150 million host nodes 1969 Four host nodes
- 5. History of theInternet Who controls the Internet? No one — c it is a public, cooperative, and independent network
- 6. How the InternetWorks How can you connect to the Internet? High-speed connection Slow-speed technology Dial-up access modem in your computer uses a standard telephone line to connect to the Internet Digital subscriber line (DSL) , cable telephone Internet services (CATV) , cable modem provide connections using regular copper telephone lines Connection is always on— whenever the computer is running Connection must be established each time you log on. Slow but inexpensive
- 7. The World WideWeb What is the World Wide Web (WWW) ? A worldwide collection of electronic documents Each electronic document is called a Web page Also called the Web Can contain text, graphics, sound, video, and animation A Web site is a collection of related Web pages
- 8. The World WideWeb What is a home page ? The first page that a Web site presents Often provides connections to other Web pages
- 9. The World WideWeb What is a Web browser ? Program that allows you to view Web pages Microsoft Internet Explorer Netscape Mozilla
- 10. Workspace Status BarElements of a Web browser Menu Bar URL Bar Toolbar
- 11. Internet Service Provider(ISP) Internet Service Provider (ISP), is any company that provides individuals and organizations with access to or presence on the Internet. E. g. Batelco.
- 12. The World WideWeb How can you establish a connection and start the Web browser? Step 2. If necessary, connect to the Internet Step 3. Connection to the Internet occurs, and a home page displays Step 1. Click the Web browser program name
- 13. The World WideWeb What is downloading ? The process of a computer receiving information The transmission of information from a local computer to a remote computer is called Uploading .
- 14. The World WideWeb What is a URL ? Unique address for a Web page
- 15. The World WideWeb What is a hyperlink (link) ? Item found elsewhere on same Web page Different Web page at same Web site Web page at a different Web site Built-in connection to another related Web page location
- 16. The World WideWeb How can you recognize links? A link can be text or an image Pointer changes to a small hand when you point to a link Text links are usually underlined and in a different color
- 17. The World WideWeb What is a search engine ? Program used to find Web sites and Web pages by entering words or phrases called search text Also called a keyword
- 18. The World WideWeb What is a portal ? A Web site that offers a variety of services from one, convenient location, usually for free E. g. Yahoo
- 19. The World WideWeb What is multimedia ? Application integrating text with other media elements Graphics Animation Audio Video
- 20. The World WideWeb What is animation ? Appearance of motion created by displaying a series of still images in sequence
- 21. The World WideWeb What is audio ? Music, speech, or any other sound Common Web audio file formats are MP3, WAV, WMA (Windows Media Audio), MPEG, RealAudio, and QuickTime
- 22. The World WideWeb What is streaming audio ? Transfers data in a continuous and even flow Enables you to listen to the sound as it downloads to your computer.
- 23. Other Internet ServicesWhat are some services found on the Internet? Chat (4) (1) E-mail (2) Web (3) Message board (5) File transfer (6) Instant messaging
- 24. Other Internet ServicesWhat is e-mail ? Short for electronic mail The transmission of messages and files via a computer network Messages can consist of simple text or can contain attachments, such as documents, graphics, or audio/video clips Internet access providers usually provide an e-mail program Some Web sites—such as MSN Hotmail and Yahoo!—provide free e-mail services
- 25. Other Internet ServicesHow do you send an e-mail message? Step 1. Start an e-mail program (Microsoft Outlook, for example) Step 2. Click the New Mail Message button Step 3. Enter the recipient’s e-mail address, the subject, and the message Step 4. Click the Insert file button if you want to attach a picture, for example, and click Send Step 5. The recipient opens the message
- 26. Other Internet ServicesWhat is an e-mail address ? Unique name that consists of a user name and domain name that identifies the user
- 27. Other Internet ServicesWhat is a chat ? Real-time typed conversation that takes place on a computer Chat room is location on server that permits users to discuss topics of interest
- 28. Other Internet ServicesWhat is FTP ? F ile T ransfer P rotocol — Internet standard that allows you to upload and download files with other computers on the Internet
- 29. Other Internet ServicesWhat are newsgroups and message boards ? Newsgroup Many Web sites use message boards because they are easier to use Online area where users discuss a particular subject Message board Type of discussion group
- 30. Other Internet ServicesWhat is a mailing list ? Group of e-mail addresses given a single name When a message is sent to the mailing list, everyone on the list receives the message To add your name to a mailing list you must subscribe to it; to remove your name you must unsubscribe
- 31. Other Internet ServicesWhat is instant messaging (IM) ? A real-time Internet communications service that notifies you when one or more people are online and allows you to exchange messages or files
- 32. Electronic Commerce Whatis e-commerce ? Business to business (B2B) Business providing goods and services to other businesses Consumer to consumer (C2C) One consumer sells directly to another Business to consumer (B2C) Sale of goods to general public Short for electronic commerce Business transaction that occurs over the Internet