Describe some tasks that the transport layer performs

Provides reliability of transmission // check transmission successful; Error detection and correction // error handling A either detection or correction; Acknowledgement of received packets; Retransmission of packets if necessary; Flow control / congestion avoidance / congestion management; Packet sequencing; Adding TCP headers; Pass data to correct process in application layer; Allocates port numbers; Dividing data into packets / reassembles data from packets; NE “chunks”, transports packets Connection establishment / maintenance; Creation of virtual circuits // creating an end-to-end connection