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By:Rakshith

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Contents

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Definition

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Modes of data transmission

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Parallel communication

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Serial communication

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Asynchronous communication

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Synchronous communication

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simplex

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Half-duplex

transmitter receiver

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Full-duplex

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Transmission media

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Guided(wire) media

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Twisted-pair wires

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Coaxial cable

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Optical fiber

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Unguided(wireless) media

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Network topology

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Mesh topology

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Star topology

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Tree topology

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Ring topology

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Bus topology

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Hybrid topology

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router

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SMVITM, Bantakal 27

Application

Presentation

Session

transport

Network

Data link

Physical

Application

Presentation

Session

transport

Network

Data link

Physical

Network

Data link

Physical

Source node Destination node

Intermediate node

Signals

Packets

Bits

Frames

OSI MODEL

O t i t ti

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Open systems interconnection

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Local area networks(LAN)

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Metropolitan area network(MAN)

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Wide area network(WAN)

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networking

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