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The Internet, Intranets, and Extranets

The Internet, Intranets, and Extranets. Chapter 7. Principles and Learning Objectives.

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The Internet, Intranets, and Extranets

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  1. The Internet, Intranets, and Extranets Chapter 7 MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  2. Principles and Learning Objectives • The Internet is like many other technologies—it provides a wide range of services, some of which are effective and practical for use today, others are still evolving, and still others will fade away from lack of use. • Briefly describe how the Internet works, including alternatives for connecting to it and the role of Internet service providers. • Identify and briefly describe the services associated with the Internet. MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  3. Principles and Learning Objectives • Originally developed as a document-management system, the World Wide Web is a menu-based system that is easy to use for personal and business applications. • Describe the World Wide Web and how it works. • Explain the use of Web browsers, search engines, and other Web tools. MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  4. Principles and Learning Objectives • Before the Internet and the World Wide Web become universally used and accepted for business use, management issues; service and speed issues; and fraud, security, and unauthorized Internet sites must be addressed and solved. • Identify who is using the Web to conduct business and discuss some of the pros and cons of Web shopping. • 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. MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  5. Use and Functioning of the Internet MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  6. Use and Functioning of the Internet • ARPANET • Internet Protocol (IP) • Wireless Internet • Research for a faster Internet • Internet2 (I2) • Next Generation Internet (NGI) • Corporate efforts MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  7. Routing Messages Over the Internet MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  8. U.S. Internet Usage MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  9. How the Internet Works • Hosts • Routers forward packets to other networks • Internet Protocol Stack (TCP/IP) • Internet Protocol (IP) • Transport Control Protocol (TCP) • Backbones MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  10. Uniform Resource Locator (URL) • http://www.course.com World Wide Web Domain category Hypertext transfer protocol Host Network Name MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  11. U.S. Top Level Domain Affiliations MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  12. Accessing the Internet • Connection via a LAN server • Network adapter card • Open Datalink Interface (ODI) • Network Driver Interface Specification (NDIS) MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  13. Accessing the Internet MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  14. Internet Service Providers (ISPs) • Provide Internet access to account holders • Monthly fee varies • Some are free MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  15. Internet Service Providers (ISPs) MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  16. Internet Services MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  17. Internet Services MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  18. Internet Services MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  19. E-mail and Instant Messaging MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  20. ICQ MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  21. Usenet Newsgroups MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  22. Internet Phone and Videoconferencing Services MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  23. Other Internet Services MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  24. The World Wide Web MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  25. The World Wide Web • Menu-based system that uses client/server model • Hypermedia • HTML, XML • Web browsers • Java • Search engines • Keyword indexes: fast & broad • Subject indexes: focused searches MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  26. Interesting Web Sites MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  27. Hypertext Markup Language MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  28. Google MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  29. Popular Search Engines MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  30. Java MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  31. Java MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  32. CVS.com MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  33. Intranets and Extranets MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  34. Intranet • Internal corporate network built using Internet and World Wide Web standards and products • Slashes the need for paper • Provides employees with an easy and intuitive approach to access information that was previously difficult to obtain MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  35. Intranet MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  36. Extranet • A network that links selected resources of the intranet of a company with its customers, suppliers, or other business partners. MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  37. Internet, Intranet, and Extranet Users MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  38. Virtual Private Network MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  39. Developing Web Content • Computer must be linked to a Web server • Need Web browser program • Add links to home page • Advertise • Tools • Word processors • HTML editor • HTML template • Text editor MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  40. Push Technology • Used to send information automatically over the Internet • Relies on HTTP or Java technology • Drawbacks include: • Information overload • Volume of data broadcast MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  41. Business Uses of the Web • E-mail • Linking buyers and sellers • Tool for marketing, sales, and customer support • Low-cost alternative to fax or express mail MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  42. Net Issues • Management issues • Service and speed issues • Routers can become bottlenecks • Connection agreements MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  43. Net Issues • Privacy • Cookie: text file placed on the hard disk of a computer system • Fraud • Security with encryption and firewalls • Digital signature • Cyphertext • Cryptography • Unauthorized sites MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  44. Cryptography MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  45. FedCIRC MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  46. The Web in Three Dimensions MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

  47. Summary • Internet - started with ARPANET, a project started by the U.S. Department of Defense (DOD) • Internet services include: • E-mail • Telnet • FTP • Usenet and newsgroups • Chat rooms • Web site - like a magazine, with a cover page called a home page that has graphics, titles, black and highlighted text MSIS 110: Introduction to Computers; Instructor: S. Mathiyalakan

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