39. TCP is
a full-duplex,
connection-oriented protocol. It
incorporates error checking as
well.
UDP (User
Datagram Protocol): UDP is a
thin protocol. UDP is a
connectionless protocol. It
doesn't contact the destination
before sending the packet and
doesn't care whether the packet
is reached at the destination.
UDP uses port number 6.
The port
number used by TCP is 6 and that
of UDP is 17.
40. Cisco
uses TFTP protocol to distribute
IOS over a WAN link.