When a DNS client requests hostname and address data
from a DNS server, the process is called resolution. In
standard DNS installations, basic DNS configuration
results in a server that performs default resolution, possibly
including one of the following examples:
The preceding represent three common resolution scenarios. The presence of
resolvers, forwarders, and the file
/etc/resolv.conf alter this default behavior.
A primary server queries itself for data. Client software on
the system requests information about another machine in the
current zone, and the server answers out of its authoritative
A remote server queries another server (for example, a primary server) for
data on a machine in the current zone. Client software on the remote
server queries the resolver, which answers the request from its database files.
A caching-only server queries its own cache for data on a computer outside
its zone. Not finding it, it queries the primary server for its zone,
then others outside the zone, until it finds the requested data.
Slave mode servers
© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003