The Internet, the Web, and Electronic Commerce

Transcription

1 The Internet, the Web, and Electronic Commerce Chapter 2 Computing Essentials 2014 Edited/Modified by Nicole Tobias 2014 by McGraw-Hill Education. This proprietary material solely for authorized instructor use. Not 2014 by McGraw-Hill Education. This proprietary material solely for authorized instructor use. Not authorized authorized for sale for distribution sale or distribution in any manner. in any manner. This document This document may not may be copied, not be copied, scanned, scanned,

2 Competencies (Page1 of 2) Discuss the origins of the Internet and the Web. Describe how to access the Web using providers and browsers. Discuss Internet communications, including , text messaging, instant messaging, social networking, blogs, microblogs, Webcasts, podcasts, and wikis. 2

3 Competencies (Page 2 of 2) Describe search tools, including search engines and specialized search engines. Evaluate the accuracy of information on the Web. Discuss electronic commerce, including B2C, C2C, B2B, and security issues. Describe cloud computing, including the three-way interaction of clients, Internet, and service providers. Describe Web utilities including plug-ins, filters, file transfer utilities, and Internet security suites. 3

4 Introduction The Internet is often referred to as the Information Superhighway because it connects millions of people across the globe. Unlike a typical highway, the Internet moves ideas, data, and information through networks. The Web provides an easy-to-use interface to Internet resources that has become an everyday tool. Competent end users need to be aware of the resources available on the Internet and the Web and how to access them. 4

5 The Internet and the Web The Internet is a large global network, connecting smaller networks worldwide The Internet was launched in 1969 US funded project to develop a national computer network ARPANET (Advanced Research Project Agency Network) Originally used to facilitate communication between researchers Limited to text only 5

6 The Internet and the Web The World Wide Web or WWW was introduced in 1991 at CERN CERN = Center for European Nuclear Research The web allowed for multimedia interfacing to the resources. 6

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 The internet vs. the web What is the difference? The internet is the actual network. Made up of cables, wires, satellites, etc. The web is a multimedia interface to the resources on the internet.

9 Common Internet Uses Communicating , photos, videos Discussions Online Shopping Searching Virtual libraries Education or e-learning Entertainment 9

10 Making IT Work for You ~ Online Entertainment Use the Internet to locate and play movies and television shows Netflix, Hulu, Amazon Prime 10

11 Access Common way to access the Internet is through a Commercial Internet Service Provider (ISP) Provide a connection for individuals to access the Internet Use telephone lines, cable, and/or wireless connections Some common ISPs are: At&T, Comcast, Sprint, T-Mobil, Verizon, Charter 11

12 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 the resource must be specified URL 12

13 URLs Uniform Resource Locator Has at least two parts Protocol Domain name Top-level domain (TLD) Identifies the type of organization 13

14 HTML and Hyperlinks Browsers interpret HTML commands Hypertext Markup Language Display document as a Web page Hyperlinks Connect to other web pages Text files Graphic images Audio and Video Clips 14

15 Interactive Web Sites Technologies used to provide highly interactive and animated websites Cascading Style Sheets (CSS) JavaScript AJAX Applets Mobile Browsers 15

16 Communication Communication is the most popular Internet activity Transmission of electronic messages over the Internet Client-based Ex. Microsoft Outlook Web-based Webmail Address 16

17 An typically has three basic elements: Header Message Signature

18 Spam Junk and/or unwanted Computer viruses or destructive programs are often attached to unsolicited CAN-SPAM Act Spam blockers / spam filters use a variety of approaches to identify and control spam 18

19 Phishing*

20 Messaging Text messaging / texting Short electronic message Instant messaging Extension of that provides direct, live communication between two or more people Most programs include video conferencing features, file sharing and remote assistance 20

21 Social Networking Connecting people and organizations that share a common interest or activity Three most popular: Facebook (2004) Facebook Profiles Facebook Pages Facebook groups Google+ (2011) Circles Hangouts Sparks LinkedIn (2003) Business-oriented 21

22 Think before you post Video l= px?aid=4995&xtid=43709

23 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? 23

24 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 24

25 Making IT Work for You ~ Twitter Microblog to help you stay in touch with friends and family 25

26 Discussion Ethics: There are many blogs written by individuals who are experts in their field and whose opinions are considered credible. These blogs are widely used by consumers and others as a source for knowledgeable and reliable product information. However, some bloggers are paid by companies or ad agencies to post favorable reviews about their products or services. Do you think that these bloggers are acting unethically when they accept payment for writing a review?

27 Search Tools Search Engines Specialized Search Engines Content Evaluation 27

28 Content Evaluation To evaluate the accuracy of internet information you must consider: 1. Authority Is the author an expert? Is the site official? 2. Accuracy Has information been critically reviewed? 3. Objectivity Does the author have a bias? 4. Currency Is the information up to date?

29 Electronic Commerce Aka e-commerce This is the buying and selling of goods over the internet. Three Basic Types Business-to-consumer (B2C) Consumer-to-consumer (C2C) Business-to-business (B2B)

30 Security Payment methods must be fast, reliable, and secure Two options Credit card Digital cash 30

31 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 31

32 Cloud Computing (Cont.) Two most critical factors that determine the efficiency 1. The speed and reliability of the user s access to the internet 2. The Internet s capability to provide safe and reliable transmission of data and programs

33 Cloud Computing: Web-based Service Google Apps 33

34 Web Utilities Specialized utility programs Plug-ins Filters RealPlayer, Acrobat Reader, Flash Player Net Nanny File Transfer Utilities FTP/SFTP, web-based, BitTorrent Internet Security Suites McAfee, Norton

35 Discussion Ethics: Most agree that it is ethical and prudent to shield young children from violent or sexual Internet content by using software that filters such content. Some parents of older children have installed computer monitoring software that records all of their children s Internet activity. They believe this is warranted because they need to know what their kids are doing online. Do you believe it is ethical of parents to do this?

36 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 site traffic and monitor the flow of customer interactions 36

37 A Look to the Future Car s Dashboard as a power, Internetconnected computing device Safety and diagnostic features are already there Potential distractions? 37

38 Open-Ended Questions (Page 1 of 3) Discuss the Internet, including its origins, the three generations of the web, and the most common uses. Describe how to access the Internet. What are the providers? Define browsers and discuss URLs, HTML, JavaScript, AJAX, Applets, and mobile browsers. Discuss Internet communications, including client-based and web-based , instant and text messaging, social networking, blogs, microblogs, webcasts, podcasts, and wikis. 38

39 Open-Ended Questions (Page 2 of 3) Define search tools including search services. Discuss search engines and specialized search engines. Describe how to evaluate the content of a web site. Describe electronic commerce, including business-to-consumer, consumer-toconsumer, and business-to-business e- commerce, and security. 39

40 Open-Ended Questions (Page 3 of 3) What is cloud computing? Describe the three basic components of cloud computing. What are Web utilities? Discuss plug-ins, filters, file transfer utilities, and Internet security suites 40