4 - Transport Layer

4 - Transport Layer

Created: 2022-06-30
Tags: #permanent


When 5 - Session Layer SUCCESSFULLY made connection between host and remote computer, data's passed down to transport layer

A protocol will be selected
Received data will be divided for easier transmission.

(TCP pieces are called segments)
(UDP pieces are called datagrams)


A protocol will be selected

TCP - Transmission Control Protocol

Allows 2 computers to remain in constant communication.
Any lost data is re-sent.

UDP - User Datagram Protocol

Packets of data are essentially thrown at the receiving computer,
if receiving computer can't keep up then that's not his problem
(e.g. a pixelated skype call)

When a protocol is now selected

Transport layer divides the transmission to bite-sized pieces which makes easier transmission of message.

(TCP bite pieces are called segments)
(UDP they're called datagrams)

References