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TCP - Transfer Control Protocol:
Reliable
Connection oriented
Acknowledgement
UDP - User Datagram Protocol:
Non reliable
Connectionless
No Acknowledgement
It is a set of rules defining a very simple virtual terminal interaction. The NVT is used in the start of a Telnet session.
It is a very simple protocol used for transmission of IP datagrams across a serial line.
It is an authentication service developed at the Massachusetts Institute of Technology. Kerberos uses encryption to prevent intruders from discovering passwords and gaining unauthorized access to files.
NETBIOS is a programming interface that allows 1/0 requests to be sent to and received from a remote computer and it hides the networking hardware from applications. NETBEUI is NetBIOS extended user interface. A transport protocol designed by Microsoft and IBM is for the use on small subnets.