What is the function of Transport layer in OSI model?

Transport Layer :

  • Transport Layer is responsible for source to destination delivery of entire message.
  • It may create connection between the source or destination.
  • Service point Addressing Layer : End to end delivery means the delivery of packet from specific process from one system to specific process on another. Thus, its header contains a service-point address or port address.
  • Segmentation and Reassembly : A message is divided into transmittable segments , each containing a sequence number which enables it to reassemble at the delivery end.
  • Connection Control : Connection made can be Connection-less or Connection oriented.
  • Flow Control and Error Control is also supported.
  • Transmission unit is Segments

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