Data Communication – Care4you

OSI Reference Model

Ravinder Nath Rajotiya — Tue, 28 Sep 2021 10:09:41 +0000

OSI Reference Model This model is based on a proposal by ISO revised in 1995. The model is called the ISO-OSI(open System Interconnection) as it deals with connecting open systems – that is systems that are open for communication with others. The principles that were applied to arrive at the seven layers can be briefly...

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Data Communications : Components, Protocols Components

Ravinder Nath Rajotiya — Tue, 28 Sep 2021 08:33:26 +0000

Data Communications : Components, protocols Components Outcome : Audience will be able to i. differentiate between data and information ii. To name various components of a communication system iii. To describe the characteristics of the effective communication iv. To differentiate between protocol and standard v. To know various standards organization Data Data is...

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Service Primitive

Ravinder Nath Rajotiya — Mon, 10 May 2021 05:28:24 +0000

Service Primitive The way in which a layer provide service is by mean of primitive. A service is formally specified by a set of primitives (operations) available to user processes to access the services. These primitives tell the services to perform some action or report on an action taken by a peer entity. Some of...

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Client-Server Communication

Ravinder Nath Rajotiya — Mon, 10 May 2021 05:26:51 +0000

A simple conversation between client-server is shown in the following figure 2.3

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Encapsulation

Ravinder Nath Rajotiya — Mon, 10 May 2021 05:25:42 +0000

Encapsulation – through the use of PDU (protocol data unit) which encapsulates data by adding a header at each layer.

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