The Internet and World Wide Web By: Shilpa Phanse 10/8/2008.

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Presentation transcript:

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 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)

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

Internet Address ◦ IP Address ◦ Domain name Electronic document ◦ World Wide Web (Service on internet) ◦ Web page ◦ Web site: Collection of web documents ◦ Web Server

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

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

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

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

The World Wide Web What is animation? p. 64 Next  Appearance of motion created by displaying a series of still images in sequence

The World Wide Web What is audio? p Fig Next  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

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

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

The World Wide Web What is virtual reality (VR)? p. 65 Next  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

The World Wide Web What are plug-ins? p. 66 Fig Next  Programs that extend the capability of a browser  You can download many plug-ins at no cost from various Web sites

Web Publishing What is Web publishing? p Fig Next  Development and maintenance of Web pages

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

Other Internet Services What is ? p Next  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 program

Other Internet Services How do you send an message? p. 69 Fig Next

Other Internet Services What is an address? p. 70 Fig Next  Name that consists of a user name and domain name that identifies the user

Other Internet Services How does an message travel? p. 70 Fig Next Step 4. When recipient uses software to check for messages, the message transfers from incoming mail server to recipient’s computer Step 2. Your software contacts software on your service provider’s outgoing mail server 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 Step 1. Using software, you create and send a message

Other Internet Services What is a mailing list? p. 71 Next  Group of 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 Click to view Web Link, click Chapter 2, Click Web Link from left navigation, then click Mailing Lists below Chapter 2

Other Internet Services What is instant messaging (IM)? p. 71 Fig Next  A real-time Internet communications service that notifies you when one or more people are online and allows you to exchange messages or files

Other Internet Services What is a chat? p Fig Next  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 Click to view Web Link, click Chapter 2, Click Web Link from left navigation, then click Chat Rooms below Chapter 2

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

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

Other Internet Services What are newsgroups and message boards? p. 73 Fig Next  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

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