Chapter 1 Introduction Business Data Communications 4 e

Chapter 1: Introduction Business Data Communications, 4 e

Information & Communication Generation and transfer of information is critical to today’s businesses n Flow of information both mirror and shape organizational structures n Networks are the enabling technology for this process n

The “Manager’s Dilemma” Effective management, use, and communication of information are essential for a business to remain competitive. n n n Technology is necessary for competitiveness Cost of technology has decreased Reliance on technology has increased Number of choices have increased Choices are both more difficult and more important

Business Information Requirements n Voice n n Digital Private Branch Exchange (PBX) voice mail, call forwarding, waiting, routing, accounting, and auditing. Data n Image n n n Facsimile (Fax) Video n Videoconferencing CH 2 & 3

Distributed Data Processing Centralized processing n Distributed processing n Hybrid systems n Downsizing Rightsizing CH 3

Transmission of Information n Transmission and transmission media n n Communication Techniques n n e. g. twisted pair, fiber, wireless, coax encoding, interface, protocols CH 6 &7 CH 8 &9 Transmission efficiency n multiplexing, compression CH 10

Multiplexing n n CH 10 The ability of a number of devices to share a transmission facility. Multiplexing is sending multiple signals or streams of information on a carrier at the same time in the form of a single, complex signal and then recovering the separate signals at the receiving end.

To Connect Computers - Networks - Communications Software

Networks Local Area Networks (LAN) n Wide Area Networks (WAN) n Wireless Networks n CH 14 &15 CH 11 &12 CH 13

Communications Software CH 4&5 TCP/IP CH 16 n Distributed Applications n Client/Server Architectures & Intranets n CH 17

Management Issues Doing Business on the Internet n Network Management n Network Security n CH 18 CH 19 CH 20

Communications Standards Importance n Process n Organizations n Appendix A

Resources Web Sites n Usenet Newsgroups n Journals n Business-oriented n Technical n