The Internet, the Web, and Electronic Commerce

1. The Internet, the Web, and Electronic Commerce 2

2. Learning Objectives • Explain the origins of the Internet and the web. • Explain how to access the web using providers and browsers. • Compare different web utilities including plug-ins, filters, file transfer utilities, and Internet security suites. • Compare different Internet communications, including email, text messaging, instant messaging, social networking, blogs, microblogs, Webcasts, podcasts, and wikis. • Describe search tools, including search engines and specialized search engines. • Evaluate the accuracy of information on the web. • Identify electronic commerce, including B2C, C2C, B2B, and security issues. • Describe cloud computing, including the three-way interaction of clients, Internet, and service providers.

3. Introduction • The Internet is an interconnected mesh of computers and data lines that connects millions of people and organizations. • It is the foundation of the digital revolution. • The web provides an easy-to-use interface to Internet resources that has become an everyday tool. • To be effective and efficient, end users need to be aware of the resources available on the Internet and the web and how to access them.

4. The Internet and the Web • The Internet is a large global network, connecting smaller networks all over the globe • The Internet was launched in 1969 • The United States funded project to develop a national computer network • ARPANET (Advanced Research Project Agency Network) • The World Wide Web or WWW was introduced in 1991 at CERN (Center for European Nuclear Research) • The Internet and the web are NOT the same • The Internet is the physical network • The web is a multimedia interface to the resources available on the Internet

5. The Internet Visualization of the various routes through a portion of the Internet.

6. WWW and Tim Berners-Lee • Tim Berners-Lee, a British engineer and computer scientist and MIT professor credited with inventing the World Wide Web, making the first proposal for it in March 1989. • On 25 December 1990, he implemented the first successful communication between an HTTP client and server via the Internet. Tim Berners-Lee on 18 November 2005

7. Web through the generations: • Web 1.0 :Focused on linking existing information • Web 2.0 :(2001) supported more dynamic content creation and social interaction. Facebook is one of the best known • Web 3.0 : Focuses on computer-generated information. Requires less human interaction to locate and integrate information

8. Common Internet Uses • Communicating • e-mail, photos, videos • Discussions • Shopping • Searching • Virtual libraries • Education or e-learning • Entertainment

9. Access • Common way to access the Internet is through a Internet Service Provider (ISP) • Provide a connection for individuals to access the Internet • Use telephone lines, cable, and/or wireless connections

10. Browsers • Programs that provide access to web resources • Allow you to explore the web • Popular Web browsers include: • Mozilla Firefox • Apple Safari • Microsoft Internet Explorer • Google Chrome • Address or location of theresource must be specified • URL (Uniform Resource Locator)

11. URLs • Uniform Resource Locator • Has at least two parts • Protocol • Domain name • Top-level domain (TLD) or Web Suffix • Identifies the type of organization

12. HTML and Hyperlinks • Browsers interpret HTML commands • Hypertext Markup Language • Display document as a web page • Hyperlinksor links • Connect to other web pages • Text files • Graphic images • Audio and Video Clips

13. Interactive Web Sites • Technologies used to provide highly interactive and animated websites • Cascading Style Sheets (CSS) • JavaScript • AJAX • Applets • Mobile Browsers

14. Web Utilities • Specialized utility programs that make using the Internet and web safer and easier • Plug-Ins • Filters • File Transfer Utilities • Internet SecuritySuites

15. Plug-Ins • Programs that automatically start and operate as part of you browser • Provide an enhanced browsing experience by enabling special file formats and multimedia elements • Acrobat Reader • Flash • QuickTime • Windows Media Player Return

16. Filters • Programs that block access to selected sites and can set time limits • Monitor total time spent on the Internet and at individual web sites • CyberPatrol • Pearl Echo • Norton Online Family • Net Nanny • Symantec Web Gateway Return

17. File Transfer Utilities • Programs that help you upload and download files to and from the Internet • Downloading • Uploading • Three popular types of programs • File transfer protocol (FTP) and secure file transfer protocol (SFTP) • Web-based file transfer services • Bit-Torrent Return

18. Internet Security Suites • Designed to maintain your security and privacy while on the web

19. Communication • Communication is the most popular Internet activity • E-mail • Transmission of electronic messages over the Internet • Three elements • Header • Address • Subject • Attachments • Message • Signature

20. Communication • Client-based e-mail system • E-mail client • Web-based e-mail system • Webmail

21. Spam • Junk and/or unwanted e-mail • Computer viruses or destructive programs are often attached to unsolicited email • CAN-SPAM Act • Spamblockers/ spamfiltersuse a variety of approaches to identify and control spam

22. Messaging • Text messaging / texting • SMS (short message service) • Short electronic message • Instant messaging • Extension of email that provides direct, live communication between two or more people • Most programs include video conferencing features, file sharing and remote assistance • Facebook Chat • Google Talk

23. Social Networking • Connecting people and organizations that share a common interest or activity • Three most popular: • Facebook • Facebook Profiles • Facebook Pages • Facebook groups • Google+ • Circles • Hangouts • Sparks • LinkedIn • Business-oriented

24. Blogs, Microblogs • Web logs or blogs – personal news pages that are date/time-stamped and arranged with the most recent items shown first • Microblogs – short status updates that answer the question: • What are you doing now?

25. Webcasts, Podcasts, Wikis • Webcast – streaming technology for live broadcast of audio and video • Podcast-audio and video files that can be downloaded to your computer or media player • Wiki – a specially designed Web site that allows visitors to edit the contents, supports collaborative writing

26. Search Tools • Search Services • Specialized Search Engines • Spiders • Search Engines • Content Evaluation • Authority • Accuracy • Objectivity • Currency

27. Electronic Commerce • Also known as e-commerce • Buying and selling of goods over the Internet • Business-to-consumer (B2C) • Consumer-to consumer (C2C) • Business-to-business (B2B)

28. Business to Consumer (B2C) • Fastest growing type of e-commerce • Three most widely used B2C applications: • Online banking • Financial trading • Shopping Return

29. Consumer to Consumer C2C • Consumer-to-consumer e-commerce (C2C) • Web auctions • Similar to traditional auctions • Person-to-person auction sites Return

30. Business to Business B2B • Involves the sale of a product or service from one business to another • Primarily a manufacturer supplier relationship

31. Security • Payment methods must be fast, reliable, and secure • Two options • Credit card • Digital cash

32. Cloud Computing • Shifts computing activities from users’ desktops to computers on the Internet • Frees end-users from owning, maintaining, and storing software programs and data • Three basic components: • Clients (end-users) • Service providers • The Internet

33. Careers In IT - Webmasters • Develop and maintain websites and resources • Backup of company website • Update and develop new resources • Work with the marketing department to increase sitetraffic and monitor the flowof customer interactions

34. End of Chapter2