Unit 1 Discussion 2: Which Layers Do You Want to Discuss?

The session layer is responsible for allowing ongoing communication between two parties across the network. It handles the setup of the session, data exchanges, and the end of the session. This layer is responsible for flow control, or defining the rules for communication between two computers. Flow control will prevent too much data from being sent to the receiving computer at one time so it does not become overloaded.

The network layer splits up long messages into smaller bits of data, often referred to as packets. The network layer chooses the route data will take and addresses the data for delivery. It adds a destination address and routing information to enable the packet to travel between nodes on the network.

The transport layer, also known as the 'end-to-end layer,' deals with transmission of data between networks. The transport layer ensures that error-free data is given to the user. This layer generates the address for the receiving computer and adds it to the data so that it is sent to the correct destination. It sets priorities for messages and error recovery procedures in the event that an error on the network occurs.

(Heaney, J.). OSI Model: Using Open System Interconnection to Send and Receive Data Retrieved from https://study.com/academy/lesson/osi-model-using-open-systems-interconnection-to-send-and-receive-data.html

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