UDP( User Datagram Protocol) <
The User Datagram Protocol (UDP) is a connectionless host to host service that operates at the Transport layer of the OSI model.
UDP relies on the upper layer protocol for error correction and reliable service.r /> The protocol is transaction oriented, and delivery and duplicate protection are not guaranteed.
The major uses of this protocol are DNS and TFTP.
UDP has a small header and for all intensive purposes adds Port addressing to the IP header.
The IP header routes datagrams to the correct host on the network and UDP routes the datagram to the correct application.