Before moving to a more detailed discussion of TCP and UDP, it is worth pausing for a moment to focus on a few of the important concepts:
Connection-oriented and connectionless protocols
Ports and sockets
These important concepts are essential to understanding the design of the Transport layer. You’ll learn about these concepts in the following sections.
To provide the appropriate level of quality assurance for any given situation, developers have come up with two alternative protocol archetypes:
A connection-oriented protocol establishes and maintains a connection between communicating computers and monitors the state of that connection over ...