A.I.S. Class 25: Outline I Learning Objectives for Chapter 4 I - - PowerPoint PPT Presentation

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A.I.S. Class 25: Outline I Learning Objectives for Chapter 4 I - - PowerPoint PPT Presentation

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A.I.S. Class 25: Outline I Learning Objectives for Chapter 4 I Telecommunications I Networks I Group Work for Chapter 4 I Group Project Stage 6 Dr. Peter R Gillett November 30, 2005 1 Learning Objectives for Chapter 4 I After studying this

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A.I.S. Class 25: Outline

I Learning Objectives for Chapter 4 I Telecommunications I Networks I Group Work for Chapter 4 I Group Project Stage 6

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Learning Objectives for Chapter 4

I After studying this chapter you should be able

to:

N identify the five components of a telecommunications

network,

N distinguish between terminals and workstations, N explain the various types of transmission links, including

physical and "through the air" links,

N differentiate between alternative transmission methods

such as analog and digital transmission, circuit switching and packet switching,

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Learning Objectives for Chapter 4

N describe in general terms the functioning of line sharing

devices and switches,

N explain the role of network architecture and standards, N explain the OSI telecommunications model, N distinguish between local area networks and wide area

networks,

N describe alternative computer network configurations

including ring, star, and bus networks,

N understand the various types of wide area networks, including

the options for centralized data processing networks and distributed data processing networks,

N explain the concept of a client/server system,

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Learning Objectives for Chapter 4

N understand the architecture and functioning of the

Internet,

N distinguish between the Internet and Intranets, N describe the operation of electronic data interchange

arrangements between organizations,

N explain the concept of e-business and its emerging

importance in the global economy.

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Telecommunications

I Terminals and workstations I Transmission links I Transmission methods I Line sharing and switching I Architecture and standards

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Terminals and Workstations

I Dumb terminals I Intelligent workstations I Network interface cards I Net PCs

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Transmission Links

I Twisted-pair cables I Coaxial cables I Fiber optic cables I Infra-red transmission I Microwaves I Satellite transmission

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Transmission Methods

I Analog I Digital I Circuit switching I Packet switching I Asynchronous I Synchronous

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Line Sharing and Switching

I Multiplexers (MUX)

time frequency

I Front-end processors I Bridges I Routers I Brouters I Gateways

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Architecture and Standards

I ISO’s OSI model

N physical N link N network N transport N session N presentation N application

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Communication Protocols

I Full Duplex

(Duplex)

I Half Duplex

(Simplex)

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Networks

I Local area networks I Network topologies

bus token ring star hybrid

I Novell NetWare I Windows 2003 Server

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Networks

I Wide area networks I Modems I ISDN I DSL I Cable Modems

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Networks

I Dedicated connections

T1 T3

I Lines

switched WATS leased

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Networks

I Centralized data processing

point-to-point multidrop multiplexed

I Distributed data processing I Client-server systems

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Networks

I Internet

Telnet FTP Usenet (News Groups) E-mail WWW IRC MUD

I Intranets I Extranets

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Networks

I Electronic Data Interchange (EDI) I Electronic Funds Transfer (EFT, EFTPOS) I Value Added Network (VAN) I ASC.X12 I EDI via Internet

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Electronic Commerce

I Web presence I Business to consumer (B2C)

electronic retailing, banking, trading

I Business to business (B2B)

e-procurement

I Business to government (B2G) I Business to employees (B2E) I Individual to government

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Electronic Commerce

I Issues

payment

N EFT N credit cards N electronic wallets N PayPal N e-cash

security privacy authentication and non-repudiation

N WebTrust

jurisdiction and legal issues

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Group Work for Chapter 4

I Discussion Questions I Problems 1 & 2

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Group Project Stage 6

I Presentation