Explain OSI reference model of computer network.

The OSI (Open Systems Interconnection) reference model is a conceptual framework for understanding the conversation features of a computer community. It consists of seven layers, every of which has a selected set of obligations and interacts with the layers above and beneath it in a hierarchical manner.

7 Layers of The OSI Model (A Complete Guide)

The seven layers of the OSI reference version are as follows:

  • Physical layer: This layer deals with the physical transmission of statistics over the network, including the electrical, mechanical, and functional specifications of the community interface and the transmission medium.
  • Data hyperlink layer: This layer is responsible for organising and maintaining a reliable communication link among two gadgets, along with mistakes detection and correction, go with the flow control, and get admission to manipulate.
  • Network layer: This layer presents the logical addressing and routing functions essential for the switch of statistics among distinct networks, including the choice of the excellent route for records transmission and the dealing with of congestion manipulate.
  • Transport layer: This layer offers end-to-quit statistics delivery services, along with dependable facts transport, drift manage, and blunders recuperation.
  • Session layer: This layer manages the conversation classes among programs on unique gadgets, such as organising, maintaining, and terminating periods.
  • Presentation layer: This layer provides statistics translation, compression, and encryption services, in addition to formatting and syntax conversion to ensure that facts may be understood through the software layer.
  • Application layer: This layer is liable for supplying network services to packages and users, including e mail, report transfer, and remote login.

By dividing the network features into discrete layers, the OSI reference version gives a fashionable for network architecture that promotes interoperability and simplifies the development of community protocols and applications.

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