1. CHAPTER 6 Telecommunications and Networks

2. Chapter Outline 6.1 What Is a Computer Network? 6.2 Network Fundamentals 6.3 The Internet and the World Wide Web 6.4 Network Applications

3. Learning Objectives 1. Compare and contrast the two major types of networks. 2. Describe the wireline communications media and transmission technologies. 3. Describe the most common methods for accessing the Internet. 4. Explain the impacts that networks have had on business and everyday life for each of the six major categories of network applications.

4. Chapter Opening Case The problem: Internet traffic

5. Chapter Opening Case (continued) Possible solution: Network Neutrality OpponentsSupporters

6. 6.1 What Is a Computer Network? In a computer network, connected computers: Work together Are interdependent Exchange data with each other

7. Broadband Fiber optics DSL Coaxial cable

8. Size of Computer Networks Home computer network National computer networkGlobal computer network

9. Local Area Networks

10. Wide Area Networks

11. Enterprise Network

12. 6.2 Network Fundamentals Analog and Digital Signals Communications Media and Channels Transmission Technologies Network Protocols Types of Network Processing

13. Analog and Digital Signals

14. Communications Media and Channels Twisted-pair wire Coaxial cable Fiber optics

15. Network Protocols Ethernet Transmission Control Protocol/Internet Protocol (TCP/IP)

16. The Four Layers of the TCP/IP Protocol

17. Packet Switching

18. Types of Network Processing Client/server computing Peer-to-peer processing

19. Types of Peer-to-Peer Processing First type Second type Third type

20. 6.3 The Internet and the World Wide Web Accessing the Internet The Future of the Internet The World Wide Web Image of the Internet in the United States

21. An Intranet

22. Accessing the Internet Connecting via an online service Internet kiosks Dial-up

23. Accessing the Internet (continued) DSL Cable Modem Satellite

24. Accessing the Internet (continued) Wireless Fiber to the home

25. Addresses on the Internet IP v 4 32 bits128 bits

26. Addresses on the Internet Domain names Top-level domain Name of the organization Name of the specific computer

27. Internet Address example www.business.auburn.edu Top level domain: edu Name of the organization: Auburn University Name of the specific computer: business

28. The Future of the Internet

29. The World Wide Web Not the same thing as the Internet Home page Uniform resource locator

30. Leading Browsers Firefox Safari Opera Chrome Internet Explorer

31. 6.4 Network Applications Discovery Communication Collaboration E-Learning and Distance Learning Virtual Universities Telecommuting

32. Discovery Search engines Metasearch engines Discovery of material in foreign languages Portals

33. Four Large Search Engines

34. Metasearch Engines

35. Publication of Material in Foreign Languages

36. Portals Commercial (public) portals Affinity portals Mobile portals Corporate portals Industrywide portals

37. Commercial Portal (example)

38. Affinity Portal (example)

39. A Corporate Portal Framework

40. Corporate Portal (example)

41. Industrywide Portal (example)

42. Communication Electronic mail (e-mail) Web-based call centers (customer call center) Electronic chat room Voice Unified

43. Electronic Mail

44. Call Centers Call Center in the United States Call Center in India

45. Electronic Chat Room

46. Voice Communication Two examples of Internet telephony (VoIP) Skype Vonage

47. Unified Communications

48. Collaboration Work group Virtual group (team)

49. Collaboration (continued) Virtual collaboration Collaboration software Electronic Teleconferencing E-Learning and Distance Learning

50. Crowdsourcing

51. Workflow and Groupware Technologies

52. Software products supporting collaboration Microsoft Sharepoint IBM Lotus Quickr

53. Telepresence Systems

54. Leading Telepresence Vendors See video on Cisco Magicvideo

55. E-Learning and Distance Learning E-Learning Distance learning

56. Benefits of E-Learning Self-paced learning increases content retention. Online materials deliver high-quality, current content. Students have the flexibility of learning from any place at any time at their own pace. Learning time generally is shorter, and more people can be trained due to faster training time. Training costs can be reduced.

57. Drawbacks of E-Learning Instructors may need training to be able to teach electronically. The purchase of additional multimedia equipment may be necessary. Students must be computer literate and may miss the face-to-face interaction with instructors. There are issues with assessing students’ work, as instructors really do not know who completed assignments.

58. Virtual Universities (example)

59. Massive Online Open Courses

60. Telecommuting

61. Telecommuting Benefits For Employees Reduced stress, improved family life Employment opportunities for single parents and persons with disabilities For Employers Increased productivity Ability to retain skilled employees

62. Telecommuting Disadvantages For Employees Feelings of isolation No workplace visibility Potential for slower promotions For Employers Difficulties in supervising work Potential information security problems Additional training costs

63. Chapter Closing Case