CHAPTER THE INTERNET, THE WEB, AND ELECTRONIC COMMERCE 2

2-2 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Competencies Discuss the origins of the Internet and the Web Describe how to access the Web Discuss Internet communications Describe Internet search tools Discuss electronic commerce Discuss Web utilities

2-3 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Internet or NET Large network that connects smaller networks (cables, wires and satellite) Launched in 1969 National computer network project of united states called Advanced research project agency network (ARPANET) US funded project called ARPANET World Wide Web (WWW) was introduced in 1992 at CERN (Center for European Nuclear Research) in Switzerland. Web is a multimedia interface to resources available on the internet Web ≠ Internet

2-4 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Common Internet Applications or uses Communicating Exchange Chat Create your own webpage Shopping Searching Entertainment Education or e-learning

2-5 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Access Providers The most common way to access the internet is through a provider or host computer (university is provider which provide path or connection) How to get “online” (connected to Internet) Commercial Internet Service Providers (ISP) National(AOL: America online, telephone connection, inside the country, standard fee Regional (telephone connection, several states, standard fee+long-distance connection charges) Wireless service providers (wireless modems

2-6 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Connection Technology Dial-up, DSl, cable and wireless modems. User computer is a Client that request services from the provider computer or Server

2-7 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. User Connection Costs & Speeds TypeFeeSpeedSeconds to Get Images Dial-up$1656 kbps45.0 DSL mbps1.7 Cable Modem mbps1.7 Satellite kbps2.8

2-8 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Web Browsers Programs that provide access to Web resources Allow you to surf the Internet Two well-known browsers Netscape Navigator Microsoft Internet Explorer Address or location of the resource must be specified

2-9 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. URLs For browser to connect to resources, the location or address of the recourses must be specified. These addresses are called uniform resource locator. Uniform Resource Locator All URLs have at least two parts Protocol (rules for exchanging data between computers) Domain name (name of the server where the resource is located) Code name (identify the type of organization :org. com. Edu. Locates Web sites (= address) protocol domain name Note: ftp:// domain code

2-10 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. More on Browsers Web site is the informational location. Once browser has connected to the web site, a document file is sent back to your computer. This document contains HTML commands. The browser interprets the HTML commands and displays the document as a webpage. Browsers interpret HTML commands Hypertext Markup Language Contained in a document Browsers display html documents as Web pages Web server: page presents information about the site with references or links that connect to other documents. The computer that contains or share these document is called Web server.

2-11 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Communication Most popular Internet activity Two types of Internet communication Discussion Groups

2-12 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. or Electronic Mail Transmission of electronic messages over the Internet. At one time consisted only of basic text message, now graphics, images, attachments Connect to internet, open program. Two of the most widely used program are Microsoft’s outlook express and Netscape's mail

2-13 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.

2-14 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Parts of Basic parts Header Address Subject Attachment Message Signature Unwanted s =spam Cc stands for carbon copy which means that whose address appears after the Cc: header would receive a copy of the message. Also, the Cc header would also appear inside the header of the received message. Bcc stands for blind carbon copy which is similar to that of Cc except that the address of the recipients specified in this field do not appear in the received message header and the recipients in the To or Cc fields will not know that a copy sent to these address.

2-15 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Address  The server providing the service for the user is use.edu  The domain code indicates that the provider is an educational institution.

2-16 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Discussion Groups to share ideas and interest Mailing lists (subscription address) Fig 2.9 Newsgroups (special networks of Fig 2-10 computer called Usenet (fig 2-10)) Chat groups (internet relay chat) IRC Instant Messaging (IM)

2-17 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Discussion Group Terms Someone who has comprehensive knowledge about a subject Wizard A sequence of ongoing messages on the same subjectThread Someone who aids new users by answering questionsSaint Request for discussionRFD Reading news but not joining in to contributeLurking Insulting, putting down, or attackingFlaming DescriptionTerm

2-18 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Search Tools search services locate information, database Search provider operate website that can help you locate the information you need. Agent, spiders or bots: are special programs look for new information and update the search services databases. Search engines (special software assist you in locating information Metasearch engines Specialized search engines Fig 2-17

2-19 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Search Engines Specialized programs to assist you in locating information on the internet Types of searches Keyword search Match or compare with database Directory search Categories or topicse General information Fig 2-13 search services website Search engine

2-20 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Metasearch Engines Visit the web sites for several individual search engines. Programs that automatically submit your search request to several search engines. The metasearch engine receives the result and order the hits and provide the edited list to you

2-21 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Metasearch Engines SiteMetasearch Service

2-22 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Electronic Commerce Known as e-commerce Buying and selling of goods over the Internet Three basic types of electronic commerce: Business-to-consumer (B2C) (e-banking, e-trading) Consumer-to-consumer (C2C) (web auction) Business-to-business (B2B) (computer, automobile parts

2-23 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Web Storefronts (program) Virtual stores Web storefront creation packages Help businesses create virtual stores Allow visitors to register, browse, and make purchase Also called commerce servers

2-24 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Web Auctions Consumer-to-consumer e-commerce Similar to traditional auctions Types Auction house sites Sell a wide goods to bidder directly, save place to shop Person-to-person auction sites Numbers of buyers and sellers.be careful

2-25 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Security Payment methods must be fast, reliable, and secure Three basic options Checks Credit card Electronic cash page 45 E-cash Cybercash Digital cash

2-26 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Web Utilities Telnet FTP Plug-ins Filters Player Reader SourcePlug-in

2-27 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. A Look to the Future Internet2 A high bandwidth project for media-intensive files Collaboration of universities, the government, and private industry 100 times faster than the Internet Not a separate Internet

2-28 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Key Terms address (32) Advance Research Project Agency Network (ARPANET) (30) agent (40) applet (33) attachment (34) auction house site (44) bot (40) browser (32) buddy (36) business-to-business (B2B) (43) business-to-consumer (B2C) (43) cable (32) carder (44) Center for European Nuclear Research (CERN) (30)

2-29 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Key Terms channel (36) chat group (36) client (32) client-server network (32) commerce servers (43) computer virus (34) contact (36) consumer-to-consumer (C2C) (43) cybercash (44) cybermall (30) dial-up (32) digital cash (44) directory search (69) discussion group (36) domain code (32) domain name (32) downloading (46)

2-30 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Key Terms DSL (32) e-cash (44) e-commerce (42) e-learning (30) electronic cash (44) electronic commerce (42) electronic mail (34) (34) file transfer protocol (FTP) (46) filter (45) friend (36) header (34) hit (40) host computer (31) hyperlink (33) Hypertext Markup language (HTML) (33)

2-31 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Key Terms index search (40) instant messaging (IM) (36) Internet (30) Internet Relay Chat (IRC)(36) Internet Service Provider (ISP) (32) Java (32) keyword search (40) link (33) list address (36) location (32) lurking (37) mailing list (36) message (34) metasearch engine (41) national service provider (32) Net (30) newsgroup (36) online (30)

2-32 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Key Terms person-to-person auction site (44) plug-in (46) protocol (32) provider (31) regional service provider (31) search engine (40) search provider (40) search service (40) server (32) signature line (34) spam (34) specialized search engine (429) spider (40) subject (34) subscription address (36)

2-33 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Key Terms Surf (32) Telnet (46) Uniform resource locator (URL) (32) uploading (46) UseNet (36) virtual library (30) Web (30) Web auction (43) Web page (33) Web server (33) Web site (33) Web storefront (43) Web storefront creation package (43) Web utility (45) wireless modem (32) wireless service provider (32)

2-34 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Key Terms World Wide Web (30)WWW (30)

2-35 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. FAQs What is the difference between the Internet and the Web? What is an ISP? What type of program is Microsoft Internet Explorer? I want to shop for items using the Internet. How do I pay for my purchases? What are the advantages of Internet2?

2-36 © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. Discussion Questions Discuss the history of the Internet. List the Internet Service Providers (ISPs) that are available in your area. Describe the advantages of using Instant Messaging (IM). Explain the differences between search engines and metasearch engines. Explain how to use a Web auction.