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Explain Client Server Model.
In the client- server model, communication usually takes the form of a request message from the client to the server asking for several works to be complete. The servers than does the work and sends back the reply.
A server application waits inertly for contact, whereas client applications initiate communication actively.
A server and client should select a transport protocol which supports connectionless service or one which supports connection-oriented service. Connectionless service permits an application to send a message to an arbitrary destination whenever; the destination does not require to agree that this will accept the message before transmission happens. In contrast, connection oriented service needs two application to establish a transport connection before data can be sent.
Q. Illustrate basic working of Physical layer? Physical layer: Physical layer is concerned with sending raw bits between source and destination nodes over a physical medium.
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