TCP and UDP are transport level Internet protocols.
corrects lost, corrupted and out-of-order packets
|best effort delivery|
|Full Duplex communication||Full Duplex communication|
|Point to Point communication||Point to Point communication or broadcast|
|Stream Interface||Packet Interface|
|Reliable connection startup||no connection|
TCP and UDP use the Internet Protocol as a network layer
TCP builds on IP using CRCs, sequence numbers, time-outs and retransmissions to create a reliable, stream oriented network.