datagram
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... transactions to be independent of the
communications system that carries them. Some systems may
wish to use datagrams for queries and responses, and only
establish virtual circuits ...
... query. Both approaches
have advantages and disadvantages, but the iterative approach
is preferred for the datagram style of access. The domain
system requires implementation of the iterative approach, but
...
... Internet, queries are carried in UDP datagrams or over
TCP connections. The response by the name server either answers the
...
... J. Postel, "User Datagram Protocol", RFC-768std6, USC/Information Sciences Institute, August 1980. ...