Data Communication & networking

This blog is for undergraduate/graduate students who require some basic information about their subjects or any other topic related to data communication.

Sunday, 27 March 2011

A Communication Model

A Communication Model

The fundamental purpose of a communications system is the exchange of data
between two parties.
Let us consider a simple communication model Figure(a), the key elements of the model are,

Source: This device generates the data to be transmitted; examples are telephones and personal computers.
Transmitter: the data generated by a source system are not transmitted directly in the form in which they were generated. A transmitter transforms and encodes the information in the form which is suitable for the transmission and then transmit it across a transmission system.
Transmission System: This can be a single transmission line or media that connects source and destination and share data between both entities.
Receiver: The receiver accepts the signal from the transmission system and converts it into a form that can be handled by the destination device (original form in which the data was generated by source)
Destination: Takes the incoming data from the receiver.

1 comment:

  1. Thanks for sharing this informative content on networking. The people who have suffficient knowledge about the networking can start preparing for CCNA. The basic knowledge about the routing algorithm, subnetting and switching adds advantage of learning CCNA.
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