1. CHAPTER An Overview of Internet and Its Applications

6. MODULE Internet Architectures

8. Internet Defined Internet Backbone run by major carriers Individuals SOHO User Company Network Internet Service Provider (ISP) Internet Service Provider (ISP)

9. Intranet Defined Internal Company Backbone Departmental LAN Fire Wall Mini or Mainframe Computer systems Departmental Computer System Internet

10. Extranet Defined Internet Company’s Intranet Business Associates Other businesses dealing with company A. Virtual Private Network (VPN)

11. END OF MODULE

12. MODULE Email and Messaging

15. Collaboration and Sharing Internet User 1 User 2 Document for Sharing or Collaboration Sharing: Both users can see the document but only one can make changes Collaboration: Both users can see and also make changes to the document NetMeeting

16. Implementation Of Messaging Lotus Domino server, Microsoft Exchange Server Server Client 1 Client 2 Internet Internet service Provider WWW Services

18. END OF MODULE

19. MODULE E-Commerce

21. END OF MODULE

22. MODULE Voice Over IP and Internet Telephony

28. END OF MODULE

29. MODULE Virtual Private Networks (VPN)

31. Virtual Private Network Public VPN

32. VPN Implementation Internet Company’s Intranet Point-to-Point Tunneling Protocol (PPTP) Fire Wall

36. END OF MODULE

37. MODULE WAN and Access Technologies

40. Long-distance Communications Modulation Digital Digital Plain Old Telephone Service (POTS) Analog Interface

42. Basic Components of the WAN Computers/ Routing algorithms X.25 Driven Leased lines Routing devices

45. Internet2: The WAN of the Future ATM operating at several hundred Mbps Ramp Business Computer System ATM Switches High speed digital lines

47. ATM Promise Server Client 1 Client 2 25 Mbps ISP 100 Mbps Internet Backbone 1 Gbps 300 Mbps

48. Challeng Posed by Gigabit Ethernet to ATM 1 Gbps (Gigabit) 100 Mbps (Fast) 10 Mbps 1 Mbps (Past) Ethernet Evolution Client 2 10 Mbps/ 100 Mbps/ 1 Gbps Server ISP Client 1 Hub

49. Wide Area Network Technologies WAN Technologies: X.25 (old) FDDI Frame Relay ATM Los Angeles Seattle New York Florida

52. Digital Internet Technologies Summarized FDDI Frame Relay ATM Cable Modem Direct Satellite Access xDSL ISDN

53. END OF MODULE

54. MODULE Audio and Video Streaming

57. Streaming Examples Streaming Software Audio (wav) Video (AVI) Real Format RM, RMA, RT, RP etc. Windows Format ASF etc. Raw File Streamed File

58. Hosting of Streamed Media Streaming Server (Real Server or Windows Media Server) Internet Streaming at 28.8, 56, 128 etc. Kbps

61. END OF MODULE

62. MODULE Video Conferencing

67. END OF MODULE

70. Microcomputer-based Distributed Architecture Fiber Optic Backbone (FDDI) Mainframe/ Minicomputer Systems Bus LAN Ring LAN WAN Gateway (TCP/IP) Modem Gateway External Digital/ Analog Lines

71. END OF MODULE

74. Downsizing: Path of Evolution Centralized Mainframe More power to the user Better management of shared data Reduced cost of ownership Distributed Network Client-Server Architecture Thin-client concept

76. Preview of Client-Server Computing Back-end data storage and retrieval. Front-end interface and data manipulation tools. Server Clients

77. A Preview of Thin-Client Concept Limited front-end processing and storage Extensive back-end data storage, retrieval and Processing Powerful Server Thin Clients

81. Summary of Digital Technologies in Telecommunications FDDI Frame Relay ATM Cable Modem Direct Satellite Access xDSL ISDN

82. END OF MODULE

83. Internet Access Gain access to the resources on the WWW. Software: Web Browser Micro Modem Serial Port Internet Access provider ISP

84. General Access Software: ProComm Plus, Hyper Terminal Public Switched Network (PSN) Gain access to a company’s mainframe to run Unix applications Micro Modem Serial Port

85. Telecommuting Main Office PSN Satellite Office Home ProComm PLUS ProComm PLUS

86. Typical LAN Client OS/ Windows 9x Client 1 Client 2 Client 3 Server: Network OS, Applications, Data etc. Windows NT server Operating System

87. EDI Defined Vendor (Supplier) Automate the Purchase/ Supply process Retail (Purchaser)

88. EDI Example Vendor Retailer Electronic procurement with minimum human intervention Purchase Order Invoice etc.

89. Distributed Data Processing Data/server Data/server Query Data/server Oracle Distributed DBMS

90. Transparency in the Search Process Data/server Data/server Query Data/server Oracle Distributed DBMS 1 3 2

91. END OF MODULE END OF CHAPTER

92. END OF MODULE END OF CHAPTER