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The Internet and World Wide Web

The Internet and World Wide Web. By: Shilpa Phanse 10/8/2008. The Internet. Worldwide collection of networks Goal was to: Be able to share information Function at different locations Host or Server A computer Provides services and connections. Connectivity of Internet.

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The Internet and World Wide Web

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  1. The Internet and World Wide Web By: ShilpaPhanse 10/8/2008

  2. The Internet • Worldwide collection of networks • Goal was to: • Be able to share information • Function at different locations • Host or Server • A computer • Provides services and connections

  3. Connectivity of Internet • Dial up access (telephone lines) • DSL (digital subscriber line) (telephone lines) • A cable (cable television) • Fiber to the premises (FTTP) (fiber optics) • Wi-Fi (Wireless fidelity) radio signal transmission • Hot Spot • Wireless modem (cellular network) • Satellite (satellite dish communications)

  4. Access Providers • Internet Service provider (ISP) • AT&T, EarthLink • Online Service Providers (OSP) • Internet and other services • News, weather, game software use, photo sharing, IM’s, online calendars • AOL and MSN • Wireless Internet Service Provider (WISP) • Wireless Internet Access to PDAs, smart phones

  5. Internet • Address • IP Address 123.123.12.12 • Domain name www.google.com • Electronic document • World Wide Web (Service on internet) • Web page • Web site: Collection of web documents • Web Server

  6. Web • Browsing the web • Web Browser (IE, Firefox) • Home Page • URL (Uniform Resource Locator) or Web Address • Protocol, domain, file • HTTP (Hypertext Transfer Protocol) • Navigation • Hyperlink or link • Tabbed browsing • Search Engines • Subject Directories

  7. Types of Web Sites • Portal • News • Informational • Business/Marketing • Educational • Entertainment • Advocacy • Blog • Wiki (allows editing, collaborative) • Media Sharing website • Content Aggregator (RSS feed) • Personal

  8. Web Publishing • Plan a web site • Analyze and design a web site • Create a web site • Deploy a web site • Maintain a web site

  9. Next The World Wide Web What is a thumbnail? • Small version of a larger graphic image—used to improve Web page display time • Usually click on thumbnail to display larger image p. 64

  10. Next The World Wide Web What is animation? • Appearance of motion created bydisplaying a series of still imagesin sequence p. 64

  11. Next The World Wide Web What is audio? • Music, speech, or any other sound • Individual compressed sound files that you download from the Web to your computer • Once downloaded, you can play (listen to) the contents of the files • A podcast is recorded audio, usually an MP3 file, stored on a Web site that can be downloaded to a computer or a portable media player p. 64 - 65 Fig. 2-14

  12. Next The World Wide Web What is streamingaudio? • Transfers data in a continuous and even flow • Enables you to listen to the sound as it downloads to your computer p. 64

  13. Next The World Wide Web What is video? • Consists of full-motion images, most with sound,played back at various speeds • MPEG (Moving Pictures Experts Group) is popular video compressionstandard p. 65

  14. Next The World Wide Web What is virtual reality (VR)? • Use of computers to simulate a real or imagined environment • Appears as a three dimensional (3-D) space • Used for games and many practical applications p. 65

  15. Next The World Wide Web What are plug-ins? • Programs that extend the capability of a browser • You can download many plug-ins at nocost from variousWeb sites p. 66 Fig. 2-15

  16. Next Web Publishing What is Web publishing? • Development and maintenance of Web pages p. 66 - 67 Fig. 2-16

  17. Next E-Commerce What is E-Commerce? • Short for electronic commerce • Business transaction that occurs over the Internet Business to consumer (B2C)Sale of goods to general public Consumer to consumer (C2C)One consumer sells directly to another Business to business (B2B)Business providing goods andservices to other businesses p. 67 - 68 Fig. 2-17

  18. Next Other Internet Services What 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, audio, or video clips • Internet access providers usually provide an e-mail program p. 69 - 70

  19. Next Other Internet Services How do you send an e-mail message? p. 69 Fig. 2-18

  20. Next Other Internet Services What is an e-mail address? • Name that consists of a user name and domain name that identifies the user p. 70 Fig. 2-19

  21. Step 1.Using e-mail software, you create and send a message Step 2.Your software contacts software on your service provider’s outgoing mail server Step 4.When recipient uses e-mail software to check for e-mail messages, the message transfers from incoming mail server to recipient’s computer Step 3.Software on outgoing mail server determines best route for data and sends message, which travels along Internet routers to recipient’s incoming mail server Next Other Internet Services How does an e-mail message travel? p. 70 Fig. 2-20

  22. Click to view Web Link,click Chapter 2, Click Web Linkfrom left navigation, then click Mailing Listsbelow Chapter 2 Next Other Internet Services What is a mailing list? • Group of e-mail names and 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 p. 71

  23. Next Other Internet Services What 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 p. 71 Fig. 2-21

  24. Click to view Web Link,click Chapter 2, Click Web Linkfrom left navigation, then click Chat Roomsbelow Chapter 2 Next Other Internet Services What is a chat? • Real-time typed conversation that takes place on a computer • Chat room is a location on an Internet server that permits users to discuss topics of interest p. 71 - 72 Fig. 2-22

  25. Next Other Internet Services What is VoIP? • Enables users to speak to other users over the Internet using their computer p. 72 Fig. 2-23

  26. Next Other Internet Services What is FTP? • File Transfer Protocol—Internet standard that permits you to upload and download files with other computers on the Internet p. 72

  27. Next Other Internet Services What are newsgroups and message boards? • Newsgroup • Online area where users discuss a particular subject • Message board • Type of discussion group • Many Web sites use message boards because they are easier to use p. 73 Fig. 2-24

  28. Next Netiquette What is netiquette? • Code of acceptable behaviors users should follow while on the Internet Golden Rule: Treat others as you would like them to treat you. p. 73 Fig. 2-25

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