Explain Transport Layer of OSI Model.

The transport layer utilizes the services provided through the network layer, as best path selection and logical addressing, to give end-to-end communication in between source and destination.

• The transport -layer data stream is a logical connection in between the endpoints of a network.
• End-to-end control is given by sliding windows and reliability into sequencing numbers and acknowledgments.
• The transport layer regulates information flow to make sure end-to-end connectivity in between host applications accurately and reliably.
• The TCP/ IP protocol of Layer 4 that is transport layer has two protocols. They are UDP and TCP.

The transport layer admits data from the session layer and also segments the data for transport across the network. Usually, the transport layer is responsible for ensuring that the data is delivered error-free and in the appropriate sequence. Flow control usually occurs at the transport layer.