2 The Internet the Web and Electronic Commerce

2 The Internet, the Web, and Electronic Commerce College of Computer and Information Science, SWU

Learning Objectives 1. Explain the origins of the Internet and the web. 2. Explain how to access the web using providers and browsers. 3. Compare different web utilities including plug-ins, filters, file transfer utilities, and Computing Essentials 2015 4. 5. 6. 7. 8. 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 B 2 C, C 2 C, B 2 B, and security issues. Describe cloud computing, including the three-way interaction of clients, Internet, and service providers. College of Computer and Information Science at Southwest University, China 2 -2

Introduction Computing Essentials 2015 • 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. College of Computer and Information Science at Southwest University, China 2 -3

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) Computing Essentials 2015 • 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 College of Computer and Information Science at Southwest University, China 2 -4

Computing Essentials 2015 The Internet Visualization of the various routes through a portion of the Internet. 5 College of Computer and Information Science at Southwest University, China 2 -5

WWW and Tim Berners-Lee Computing Essentials 2015 • 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 6 College of Computer and Information Science at Southwest University, China 2 -6

Web through the generations: l�Web 1. 0 : �Focused on linking existing information l�Web 2. 0 : �(2001) supported more dynamic content creation and social interaction. Facebook is one of the best known Computing Essentials 2015 l Web 3. 0 : Focuses on computer-generated information. Requires less human interaction to locate and integrate information 7 College of Computer and Information Science at Southwest University, China 2 -7

Common Internet Uses Computing Essentials 2015 • Communicating • e-mail, photos, videos • Discussions • Shopping • Searching • Virtual libraries • Education or e-learning • Entertainment College of Computer and Information Science at Southwest University, China 2 -8

Access • Common way to access the Internet is through a Computing Essentials 2015 Internet Service Provider (ISP) • Provide a connection for individuals to access the Internet • Use telephone lines, cable, and/or wireless connections College of Computer and Information Science at Southwest University, China 2 -9

Browsers • Programs that provide access to web Computing Essentials 2015 resources • Allow you to explore the web • Popular Web browsers include: • • Mozilla Firefox Apple Safari Microsoft Internet Explorer Google Chrome • Address or location of the resource must be specified • URL (Uniform Resource Locator) College of Computer and Information Science at Southwest University, China 2 -10

URLs • Uniform Resource Locator • Has at least two parts Web Suffix • Identifies the type of organization Computing Essentials 2015 • Protocol • Domain name • Top-level domain (TLD) or 2 -11

HTML and Hyperlinks Computing Essentials 2015 • Browsers interpret HTML commands • Hypertext Markup Language • Display document as a web page • Hyperlinks or links • Connect to other web pages • Text files • Graphic images • Audio and Video Clips College of Computer and Information Science at Southwest University, China 2 -12

Interactive Web Sites Computing Essentials 2015 • Technologies used to provide highly interactive and animated websites • Cascading Style Sheets (CSS) • Java. Script • AJAX • Applets • Mobile Browsers College of Computer and Information Science at Southwest University, China 2 -13

Web Utilities • Specialized utility programs that make using the Internet and Computing Essentials 2015 web safer and easier • Plug-Ins • Filters • File Transfer Utilities • Internet Security Suites College of Computer and Information Science at Southwest University, China 2 -14

Plug-Ins Computing Essentials 2015 • 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 • Quick. Time • Windows Media Player Return College of Computer and Information Science at Southwest University, China 2 -15

Filters Computing Essentials 2015 • Programs that block access to selected sites and can set time limits • Monitor total time spent on the Internet and at individual web sites • Cyber. Patrol • Pearl Echo • Norton Online Family • Net Nanny • Symantec Web Gateway Return College of Computer and Information Science at Southwest University, China 2 -16

File Transfer Utilities Computing Essentials 2015 • 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 College of Computer and Information Science at Southwest University, China 2 -17

Internet Security Suites Computing Essentials 2015 • Designed to maintain your security and privacy while on the web College of Computer and Information Science at Southwest University, China 2 -18

Communication • Communication is the most popular Internet activity • E-mail • Transmission of electronic messages over the Internet • Three elements • Header Computing Essentials 2015 • Address • • Subject Attachments Message Signature College of Computer and Information Science at Southwest University, China 2 -19

Communication • Client-based e-mail system Computing Essentials 2015 • E-mail client • Web-based e-mail system • Webmail College of Computer and Information Science at Southwest University, China 2 -20

Spam Computing Essentials 2015 • Junk and/or unwanted e-mail • Computer viruses or destructive programs are often attached to unsolicited email • CAN-SPAM Act • Spam blockers / spam filters use a variety of approaches to identify and control spam College of Computer and Information Science at Southwest University, China 2 -21

Messaging • Text messaging / texting • SMS (short message service) • Short electronic message • Instant messaging • Extension of email that provides direct, live Computing Essentials 2015 communication between two or more people • Most programs include video conferencing features, file sharing and remote assistance • Facebook Chat • Google Talk College of Computer and Information Science at Southwest University, China 2 -22

Computing Essentials 2015 Social Networking • Connecting people and organizations that share a common interest or activity • Three most popular: • Facebook Profiles • Facebook Pages • Facebook groups • Google+ • Circles • Hangouts • Sparks • Linked. In • Business-oriented College of Computer and Information Science at Southwest University, China 2 -23

Blogs, Microblogs • Web logs or blogs – updates that answer the question: • What are you doing now? Computing Essentials 2015 personal news pages that are date/time-stamped and arranged with the most recent items shown first • Microblogs – short status 2 -24

Webcasts, Podcasts, Wikis Computing Essentials 2015 • 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 2 -25

Search Tools Computing Essentials 2015 • Search Services • Specialized Search Engines • Spiders • Search Engines • Content Evaluation • Authority • Accuracy • Objectivity • Currency College of Computer and Information Science at Southwest University, China 2 -26

Electronic Commerce • Also known as e-commerce • Buying and selling of goods over the Internet Computing Essentials 2015 • Business-to-consumer (B 2 C) • Consumer-to consumer (C 2 C) • Business-to-business (B 2 B) College of Computer and Information Science at Southwest University, China 2 -27

Business to Consumer (B 2 C) • Fastest growing type of e-commerce • Three most widely used B 2 C applications: Computing Essentials 2015 • Online banking • Financial trading • Shopping Return College of Computer and Information Science at Southwest University, China 2 -28

Consumer to Consumer C 2 C • Consumer-to-consumer e-commerce (C 2 C) • Web auctions • Similar to traditional auctions Computing Essentials 2015 • Person-to-person auction sites Return College of Computer and Information Science at Southwest University, China 2 -29

Business to Business B 2 B • Involves the sale of a product or service from one business to Computing Essentials 2015 another • Primarily a manufacturer supplier relationship College of Computer and Information Science at Southwest University, China 2 -30

Security • Payment methods must be fast, reliable, and Computing Essentials 2015 secure • Two options • Credit card • Digital cash College of Computer and Information Science at Southwest University, China 2 -31

Cloud Computing Essentials 2015 • 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 College of Computer and Information Science at Southwest University, China 2 -32

Careers In IT - Webmasters Computing Essentials 2015 • Develop and maintain websites and resources • Backup of company website • Update and develop new resources • Work with the marketing department to increase site traffic and monitor the flow of customer interactions College of Computer and Information Science at Southwest University, China 2 -33

Computing Essentials 2015 • End of Chapter 2 College of Computer and Information Science at Southwest University, China 2 -34