Unlike TCP connections, which can be closed by a " FIN, ACK " exchange, these connectionless protocols allow a session to end only by time-out.
12.
Connectionless protocols are usually described as stateless protocols because the end points have no protocol-defined way to remember where they are in a " conversation " of message exchanges.
13.
The connectionless protocol classes provide the capabilities needed to transfer one Network Service Data Unit ( NSDU ) in the " data " field of an XUDT, LUDT or UDT message.
14.
Whether a communication is a connection-oriented, or connectionless, is defined by the communication protocol, and not by API . Examples of the connection-oriented protocols include TCP and SPX, and examples of connectionless protocols include UDP, " raw IP ", and IPX.
