Tentxa Layer Network (Reference Models in Communication Networks) ( Tentxa layer network )

Reference Models in Communication Networks

The most important reference models are :

OSI reference model.
TCP/IP reference model.

Introduction to ISO-OSI Model:

There are many users who use computer network and are located all over the world. To ensure national and worldwide data communication ISO (ISO stands for International Organization of Standardization.) developed this model. This is called a model for open system interconnection (OSI) and is normally called as OSI model.OSI model architecture consists of seven layers. It defines seven layers or levels in a complete communication system. OSI Reference model is explained in other chapter.

Introduction to TCP/IP REFERENCE Model

TCP/IP is transmission control protocol and internet protocol. Protocols are set of rules which govern every possible communication over the internet. These protocols describe the movement of data between the host computers or internet and offers simple naming and addressing schemes.

TCP/IP Reference model is explained in details other chapter.

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Tentxa layer Network ( Connection Oriented and Connectionless Services )

Connection Oriented and Connectionless Services These are the two services given by the layers to layers above them. These services are : Connection Oriented Service Connectionless Services Connection Oriented Services There is a sequence of operation to be followed by the users of connection oriented service. These are : Connection is established Information is sent Connection is released In connection oriented service we have to establish a connection before starting the communication. When connection is established we send the message or the information and then we release the connection. Connection oriented service is more reliable than connectionless service. We can send the message in connection oriented service if there is an error at the receivers end. Example of connection oriented is TCP (Transmission Control Protocol) protocol. Connection Less Services It is similar to the postal services, as it carries the full address where the message (letter) i...

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Tentxa Layer Network ( OSI Models and Network layers )

____________________________________________________________________ Various types of OSI models and Network layers Issued by Tentxa layer network

Tentxa Layer Network

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