Komunikasi Data dan Jaringan Komputer

Program Studi: Magister Ilmu KomputerProgram Pascasarjana Teknologi Informasi

Universitas Budi Luhur

Overview Komunikasi Data dan Jaringan

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A Communications Model

• Source• generates data to be transmitted

• Transmitter• Converts data into transmittable signals

• Transmission System• Carries data

• Receiver• Converts received signal into data

• Destination• Takes incoming data

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Simplified Communications Model - Diagram

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Networking

• Point to point communication not usually practical

• Devices are too far apart

• Large set of devices would need impractical number of connections

• Solution is a communications network

• Wide Area Network (WAN)

• Metropolitan Area Network (MAN)

• Local Area Network (LAN)

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Wide Area Networks

• Large geographical area

• Crossing public rights of way

• Rely in part on common carrier circuits

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Local Area Networks

• Smaller scope

• Building or small campus

• Usually owned by same organization as attached devices

• Data rates much higher

• Usually broadcast systems

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LAN Configurations

• Switched

• Switched Ethernet

• May be single or multiple switches

• Wireless

• Mobility

• Ease of installation

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Metropolitan Area Networks

• MAN

• Middle ground between LAN and WAN

• Private or public network

• High speed

• Large area

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Outline

• Brief history of Data Communications• Communications, Information Systems and the Internet

• Data Communications Networks• Network components, network types

• Network Models• OSI model, Internet model, transmission via “layers”

• Network Standards• Standards making, common standards

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Information Age

• First Industrial Revolution• Introduction of machinery

• New organizational methods

• Changed the way people worked

• Second Industrial Revolution – Information Age• Introduction of computers

• Introduction of networking and data communication

• Changed the way people worked again

• Faster communication Collapsing Information lag

• Brought people together Globalization

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ThreeParts to Understanding Networking

1. Concepts of networking• How data moves from one computer to another over a

network

• Theories of how networks operate

2. Technologies in use today• How theories are implemented, specific products

• How do they work, their use, applications

3. Management of networking technologies• Security

• Network Design

• Managing the network1 - 11

Comparison of Network Models

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