DATA COMMUNICATIONS AND NETWORKING I.


Components | Terminals/Workstations | Transmission Links | Transmission Methods | Line sharing/switching | Architecture and standards | Network Topologies


Components of a Telercommunications Network

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Terminals and Workstations:

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Transmission Links:

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Transmission Methods

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Line sharing and switching devices

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Architecture and standards

Protocol
"A protocol provides the rules for communication. It contains the details of message formats, describes how a computer responds when a message arrives, and specifies how a computer handles errors or other abnormal conditions.." (Comer, 1995)

OSI Model:

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Network Topologies

Bus Networks:

Each device is connected to a common "backbone.Use either the Ethernet protocol (10Mb/sec) or fast Ethernet protocol (100Mb/sec.)

Ring Networks:

Each device is connected to a common circular loop (cable).

Star Networks:

One computer acts as the "host" computer to which all other computers and devices are connected.

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Updated on September 21, 1997 by Jagdish S. Gangolly.