65
vides for exchange
delivery. Best suited for small,
dependent requests, such as requesting a MIB value from an SNMP agent, in which first
p a connection would take more time than sending the data.
irtual Connection (VC)
s and behaves like a dedicated point-to-point line or a system that delivers
is
and receiving
evices do not have to be aware of the options and the route is chosen only when a
-arrangement, so each virtual connection exists only for
AN
ea network - A data communications network that spans any distance and is usually
UDP
User Datagram Protocol - A connectionless transport protocol that runs on top of TCP/IP's
IP. UDP, like TCP, uses IP for delivery; however, unlike TCP, UDP pro
of datagram without acknowledgments or guaranteed
in
setting u
UNI signaling
User Network Interface signaling for ATM communications.
V
A link that seem
packets in sequence, as happens on an actual point-to-point network. In reality, the data
delivered across a network via the most appropriate route. The sending
d
message is sent. There is no pre
the duration of that one transmission.
W
Wide ar
provided by a public carrier (such as a telephone company or service provider).
