Ifsm 370 Discussion of week 5 post 13

1. Three layers of the OSI model explained:

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Application layer: The user interface. This layer must interface with the layer below it, the presentation layer, to display data in a format that is recognizable to the end-user. Protocols utilized in the application layer allow software to send and receive information. Examples of these protocols are the hypertext transfer protocol (HTTP) and the file transfer protocol (FTP). Client software applications itself are not a part of the application layer.

Session layer: This layer forms communication channels, called sessions, between devices. The session layer is responsible for opening communication channels, keeping them open and functional for data transfer, and closing the channels as soon as communication between devices has ended. If a session is interrupted or disconnected, data transfer can resume at checkpoints the session layer creates. This prevents a disconnection or interruption from causing transfers to always completely restart. The session layer communicates with the

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