principles of information systems - chapter 6
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Principles of Information Systems Sixth Edition, Written by Ralph Star, George ReynoldsTRANSCRIPT
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Principles of Information Systems, Sixth Edition
Telecommunications and Networks
Chapter 6
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Principles of Information Systems, Sixth Edition
Principles and Learning Objectives
• Effective communication is essential to organizational success.
– Define the terms communication and telecommunications and describe the components of a telecommunications system.
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Principles of Information Systems, Sixth Edition
Principles and Learning Objectives
• An unmistakable trend of communications technology is that more people are able to send and receive all forms of information over greater distances at a faster rate.– Identify three basic types of communications media and
discuss the basic characteristics of each.– Identify several types of telecommunications hardware
devices and discuss the role that each plays.– Identify the benefits associated with a telecommunications
network.– Name three distributed processing alternatives and discuss
their basic features.– Define the term network topology and identify five
alternatives.
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Principles of Information Systems, Sixth Edition
Principles and Learning Objectives
• The effective use of telecommunications and networks can turn a company into an agile, powerful, and creative organization, giving it a long-term competitive advantage.
– Identify and briefly discuss several telecommunications applications.
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Principles of Information Systems, Sixth Edition
Overview of Telecommunications Systems
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Principles of Information Systems, Sixth Edition
Communications
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Principles of Information Systems, Sixth Edition
Communications
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Principles of Information Systems, Sixth Edition
Telecommunications
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Principles of Information Systems, Sixth Edition
Telecommunications Media
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Principles of Information Systems, Sixth Edition
Basic Communications Channel Characteristics
• Simplex channel• Half-duplex• Full-duplex channel
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Principles of Information Systems, Sixth Edition
Bandwidth
• The range of frequencies that an electronic signal occupies on a given transmission medium.
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Principles of Information Systems, Sixth Edition
Broadband
• Telecommunications in which a wide band of frequencies is available to transmit information, allowing more information to be transmitted in a given amount of time.
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Principles of Information Systems, Sixth Edition
Shannon’s Fundamental Law of Information Theory
• The information carrying capacity of a channel is directly proportional to its bandwidth - the broader the bandwidth, the more information that can be carried.
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Principles of Information Systems, Sixth Edition
Types of Media
• Twisted-Pair• Coaxial Cable• Fiber-Optic Cable• Microwave Transmission
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Principles of Information Systems, Sixth Edition
Twisted-Pair Wire Cable
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Principles of Information Systems, Sixth Edition
Coaxial Cable
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Principles of Information Systems, Sixth Edition
Fiber Optic Cable
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Principles of Information Systems, Sixth Edition
Microwave Transmission
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Principles of Information Systems, Sixth Edition
Satellite Transmission
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Principles of Information Systems, Sixth Edition
Cellular Transmission
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Principles of Information Systems, Sixth Edition
Telecommunications Devices
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Principles of Information Systems, Sixth Edition
Devices
• Modems:– Analog– Digital
• Special-purpose modems• Multiplexers • Front-end processors
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Principles of Information Systems, Sixth Edition
Modems
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Principles of Information Systems, Sixth Edition
Multiplexers
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Principles of Information Systems, Sixth Edition
Front-End Processors
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Principles of Information Systems, Sixth Edition
Carriers and Services
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Principles of Information Systems, Sixth Edition
Carriers and Services
• Common carriers• Value-added carriers• Switched and dedicated lines• Private branch exchange (PBX)• Wide-area telecommunications service (WATS)• Phone and dialing services • Digital subscriber line (DSL)• T1 Carrier
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Principles of Information Systems, Sixth Edition
Integrated Services Digital Network (ISDN)
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Principles of Information Systems, Sixth Edition
Carriers and Services
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Principles of Information Systems, Sixth Edition
Networks & Distributed Processing
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Principles of Information Systems, Sixth Edition
Basic Processing Strategies
• Centralized processing• Decentralized processing• Distributed processing
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Principles of Information Systems, Sixth Edition
Network Concepts and Considerations
• Network topology– Ring network– Bus network– Hierarchical– Star network– Hybrid network
• Network types– Local Area Networks– Wide Area Networks– International networks– Home and small business networks
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Principles of Information Systems, Sixth Edition
Network Topology
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Principles of Information Systems, Sixth Edition
Network Topology
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Principles of Information Systems, Sixth Edition
Network Topology
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Principles of Information Systems, Sixth Edition
Local Area Networks
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Principles of Information Systems, Sixth Edition
Wide Area Networks
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Principles of Information Systems, Sixth Edition
Home and Small Business Networks
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Principles of Information Systems, Sixth Edition
Terminal-to-Host
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Principles of Information Systems, Sixth Edition
File Server
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Principles of Information Systems, Sixth Edition
Client/Server
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Principles of Information Systems, Sixth Edition
Communications Software and Protocols
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Principles of Information Systems, Sixth Edition
Communications Software
• Network operating systems (NOS)• Network management software
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Principles of Information Systems, Sixth Edition
Communications Protocols
• Open Systems Interconnection (OSI) model• Transmission Control Protocol/Internet Protocol
(TCP/IP)• Systems Network Architecture (SNA)• Ethernet• Asynchronous Transfer Mode (TM)• Bluetooth
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Principles of Information Systems, Sixth Edition
Open Systems Interconnection (OSI) Model
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Principles of Information Systems, Sixth Edition
Open Systems Interconnection (OSI) Model
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Principles of Information Systems, Sixth Edition
Network Interconnectivity Technology
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Principles of Information Systems, Sixth Edition
Bridge, Routers, and Gateways
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Principles of Information Systems, Sixth Edition
Telecommunications and Applications
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Principles of Information Systems, Sixth Edition
Telecommunications and Applications
• Voice mail• Electronic software distribution• Telecommuting• Videoconferencing• Electronic data interchange (EDI)
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Principles of Information Systems, Sixth Edition
Videoconferencing
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Principles of Information Systems, Sixth Edition
Electronic Data Interchange (EDI)
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Principles of Information Systems, Sixth Edition
Public Network Services
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Principles of Information Systems, Sixth Edition
Summary• Communications - any process that permits
information to pass from a sender to one or more receivers
• Telecommunications media - twisted-pair wire cable, coaxial cable, and fiber-optic cable
• Modems - convert signals from digital to analog for transmission, then back to digital
• Ethernet - the most widely installed local area network (LAN) technology
Principles of Information Systems, Ninth Edition Chapter 10 Information and Decision Support Systems
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