Open s ystem interconnection
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Open S ystem Interconnection. It is a process of communication between the two end points in the telecommunication network . OSI is divided into seven layers . It has two groups : The upper four layers are used whenever a messages passes through the user.

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Open S ystem Interconnection

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Open s ystem interconnection

Open System Interconnection

  • It is a process of communication between the two end points in the telecommunication network .

  • OSI is divided into seven layers .

  • It has two groups :

  • The upper four layers are used whenever a messages passes through the user.

  • The lower three layers are whenever a message passes through the host computer


Layer 7 application layer

LAYER 7-APPLICATION LAYER

  • This layer is responsible to provide service to user.

  • It is a layer in which communication partners are identified.

  • Quality of the service is identified.

  • User authentication and privacy are considered.


Open s ystem interconnection

  • The top layer of the OSI model.

  • Provides a set of interfaces for sending and receiving applications to gain access to and use network services, such as: networked file transfer, message handling and database query processing.

  • The application layer is responsible for providing services to the user.


Open s ystem interconnection

  • This layer provide service for file transfer,

  • E mail and other network software.

  • Telnet , FTP & HTTP are application that exist.


Open s ystem interconnection

Application layer

The application layer is responsible for providing services to the user.


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