TRENDnet TW100-S4W1CA User Manual page 45


TCP (Transmission Control Protocol) - A method (protocol) used
along with the Internet Protocol (Internet Protocol) to send data in
the form of message units between computers over the Internet.
While IP takes care of handling the actual delivery of the data, TCP
takes care of keeping track of the individual units of data (called
packets) that a message is divided into for efficient routing through
the

UDP (User Datagram Protocol) - A communications method
(protocol) that offers a limited amount of service when messages
are exchanged between computers in a network that use the
Internet Protocol (IP). UDP is an alternative to the TCP and, together
with IP, is sometimes referred to as UDP/IP. Like the Transmission
Control Protocol, UDP uses the Internet Protocol to actually get a
data unit (called a datagram) from one computer to another. Unlike
TCP, however, UDP does not provide the service of dividing a
message into packets (datagrams) and reassembling it at the other
end. Specifically, UDP doesn't provide sequencing of the packets
that the data arrives in. This means that the application program
that uses UDP must be able to make sure that the entire message
has arrived and is in the right order. Network applications that want
to save processing time because they have very small data units to
exchange (and therefore very little message reassembling to do)
may prefer UDP to TCP.
Internet.