1. Principles of Information Systems, Ninth Edition Principles of Information Systems, Ninth Edition Chapter 7 The Internet, Intranets, and Extranets

2. ◦ Briefly describe how the Internet works, including alternatives for connecting to it and the role of Internet service providers ◦ Describe the World Wide Web and how it works ◦ Explain the use of Web browsers, search engines, and other Web tools ◦ Identify and briefly describe the applications associated with the Internet and the Web Principles of Information Systems, Ninth Edition2

3. ◦ Identify who is using the Web to conduct business and discuss some of the pros and cons of Web commerce ◦ Outline a process for creating Web content ◦ Describe Java and discuss its potential impact on the software world ◦ Define the terms intranet and extranet and discuss how organizations are using them ◦ Identify several issues associated with the use of networks Principles of Information Systems, Ninth Edition3

4.  ARPANET ◦ Ancestor of the Internet ◦ Project started by the U.S. Department of Defense (DoD) in 1969 Principles of Information Systems, Ninth Edition4

5.  Transmission Control Protocol (TCP) ◦ Transport-layer protocol that most Internet applications use with IP  Backbone ◦ One of the Internet’s high-speed, long-distance communications links  Uniform Resource Locator (URL) ◦ An assigned address on the Internet for each computer Principles of Information Systems, Ninth Edition5

6.  Internet Corporation for Assigned Names and Numbers (ICANN) ◦ Responsible for managing IP addresses and Internet domain names ◦ Has authority to resolve domain name disputes  Cyber-squatters ◦ Register domain names in the hope of selling them to corporations or people Principles of Information Systems, Ninth Edition6

7.  Accessing the Internet ◦ Connect via LAN Server ◦ Connect via Dial-up ◦ Connect via High-Speed Service ◦ Connect Wirelessly Principles of Information Systems, Ninth Edition

8. How the Internet Works (continued)

9.  Any company that provides individuals or organizations with access to the Internet  Most charge a monthly fee  You get: ◦ Access to the Internet ◦ Email account ◦ Storage space ◦ Other Principles of Information Systems, Ninth Edition9

10.  Collection of tens of millions of server computers that work together as one in an Internet  Hyperlink ◦ Highlighted text or graphics in a Web document that, when clicked, opens a new Web page  Web browser ◦ Web client software such as Internet Explorer, Firefox, and Safari used to view Web pages Principles of Information Systems, Ninth Edition10

11. Principles of Information Systems, Ninth Edition The World Wide Web (continued)

12.  Hypertext Markup Language (HTML) ◦ Standard page description language for Web pages  HTML tags ◦ Let the browser know how to format text  Extensible Markup Language (XML) ◦ Markup language for Web documents containing structured information  Cascading Style Sheet (CSS) ◦ File or portion of an HTML file that defines the visual appearance of content in a Web page Principles of Information Systems, Ninth Edition12

13.  Web 2.0 ◦ The Web as a computing platform that supports software applications and the sharing of information  Rich Internet application ◦ Software that has the functionality and complexity of traditional application software, but runs in a Web browser and does not require local installation Principles of Information Systems, Ninth Edition

14.  Java ◦ Object-oriented programming language from Sun Microsystems based on C++ ◦ Allows small programs (applets) to be embedded within an HTML document  Other languages ◦ Asynchronous JavaScript and XML (AJAX) ◦ Hypertext Preprocessor (PHP) ◦ Adobe Flash and Microsoft Silverlight Principles of Information Systems, Ninth Edition14

15.  Popular tools for creating Web pages and managing Web sites: ◦ Adobe Dreamweaver, Microsoft Expression Web, and Nvu  Popular publishing options: ◦ ISPs, free sites, and Web hosting  Mash-up ◦ Process of mixing two or more hip-hop songs into one song Principles of Information Systems, Ninth Edition15

16.  Standards and tools that streamline and simplify communication among Web sites  XML ◦ The key to Web services  RSS ◦ Real Simple Syndication ◦ Podcasts ◦ Streaming audio and video Principles of Information Systems, Ninth Edition16

17.  Other components used in Web service applications: ◦ SOAP (Simple Object Access Protocol) ◦ WSDL (Web Services Description Language) ◦ UDDI (Universal Discovery Description and Integration) Principles of Information Systems, Ninth Edition17

18.  Search engines and Web research ◦ Search engines  Have become important to businesses as a tool to drive visitors to the business’ Web site ◦ SEO has become a valuable marketing tool Principles of Information Systems, Ninth Edition

19. Search Engines and Web Research

20.  Commercial Internet Exchange (CIX) Association ◦ Established in 1991 ◦ Allows businesses to connect to the Internet Principles of Information Systems, Ninth Edition20

21.  E-mail ◦ No longer limited to simple text messages ◦ Can embed sound and images ◦ Can attach files  Instant messaging ◦ Online, real-time communication between two or more people who are connected to the Internet Principles of Information Systems, Ninth Edition21

22.  Telnet ◦ Network protocol that enables users to log on to networks remotely over the Internet  Secure Shell (SSH) ◦ Provides Telnet functionality through a more secure connection  File Transfer Protocol (FTP) ◦ Supports file transfers between a host and a remote computer Principles of Information Systems, Ninth Edition22

23.  Web log (blog) ◦ Web site that people create and use to write about their observations, experiences, and feelings on a wide range of topics  Podcast ◦ Audio broadcast over the Internet ◦ An audio blog Principles of Information Systems, Ninth Edition23

24.  Usenet ◦ Uses e-mail to provide a centralized news service ◦ Topic are called newsgroups ◦ Protocol that describes how groups of messages can be stored on and sent between computers Principles of Information Systems, Ninth Edition24

25.  Chat rooms ◦ Enable two or more people to engage in interactive “conversations” over the Internet ◦ Internet Relay Chat (IRC)  Requires participants to type their conversation rather than speak Principles of Information Systems, Ninth Edition25

26.  Internet phone service ◦ Relatively inexpensive, especially for international calls  Voice-over-IP (VoIP) technology ◦ Network managers can route phone calls and fax transmissions over the same network they use for data  Internet videoconferencing ◦ Supports both voice and visual communications Principles of Information Systems, Ninth Edition26

27.  Social Networking ◦ Facebook  Provides an application development platform so that technically proficient members can create applications to run within Facebook ◦ The U.S. intelligence community  Is adopting social networking to share information among operatives and analysts ◦ Twitter  Allows members to report on what they are doing throughout the day Principles of Information Systems, Ninth Edition

28.  Media Sharing ◦ YouTube  Allows members to post homemade video content ◦ Flickr  Allows members to upload photos to their own personal online photo album and choose photos to share with the community Principles of Information Systems, Ninth Edition

29.  Content Streaming ◦ Method for transferring multimedia files, radio broadcasts, and other content over the Internet ◦ Enables users to browse large files in real time  Shopping on the Web ◦ Amazon Shorts  Has stories that vary in length from 2,000 to 10,000 words ◦ Bot (intelligent agent)  Software tool that searches the Web for information, products, or prices Principles of Information Systems, Ninth Edition

30.  Web auction ◦ A way to connect buyers and sellers  eBay ◦ Popular auction site ◦ Easy to use and includes thousands of products and services in many categories  Auction sites ◦ Cannot always determine whether the people and companies listing products and services are legitimate Principles of Information Systems, Ninth Edition30

31.  Radio broadcasts are now available on the Internet  Video and TV are also becoming available  Internet Protocol Television (IPTV) protocol ◦ Used to put TV programming on the Internet  Digital books, both in text and audio form ◦ Are growing in popularity thanks to appealing devices and services  Audio books ◦ Have become more popular due to the popularity of the iPod and services like audible.com Principles of Information Systems, Ninth Edition31

32.  Internet office ◦ Web site that contains files, phone numbers, e-mail addresses, an appointment calendar, and more ◦ Allows your desktop computer, phone books, appointment schedulers, and other important information to be with you wherever you are Principles of Information Systems, Ninth Edition32

33.  Internet ◦ Can provide critical information during times of disaster ◦ Can be used to translate words, sentences, or complete documents from one language into another ◦ Facilitates distance learning, which has dramatically increased in the last several years Principles of Information Systems, Ninth Edition33

34.  Intranet ◦ Internal corporate network built using Internet and World Wide Web standards and technologies  Extranet ◦ Network that links selected resources of the intranet of a company with its customers, suppliers, or other business partners  Virtual private network (VPN) ◦ Secure connection between two points on the Internet Principles of Information Systems, Ninth Edition34

35. Principles of Information Systems, Ninth Edition Intranets and Extranets (continued)

36.  Management issues ◦ Preventing attacks  Service and speed issues ◦ Keeping up with Internet traffic and traffic on company intranets  Privacy, fraud, security, and unauthorized Internet sites ◦ People and companies are reluctant to embrace the Internet unless these issues are successfully addressed Principles of Information Systems, Ninth Edition36

37.  Search engines ◦ Good starting point for searching for specific companies or industries  Job sites ◦ www.directmarketingcareers.com ◦ www.monster.com ◦ www.hotjobs.com ◦ www.careerbuilder.com Principles of Information Systems, Ninth Edition37

38. End Principles of Information Systems, Ninth Edition38