Dns On Windows Server 1002003 [Electronic resources] نسخه متنی

2.5 Resolvers

Resolvers
are the clients that access name servers. Programs running on a host
that need information from the domain namespace use the resolver. The
resolver handles:

Querying a name server

Interpreting responses (which may be resource records or an error)

Returning the information to the programs that requested it

In Windows Server 2003, the resolver is a set of library routines,
linked into programs such as telnet and
ftp, and a system service called the DNS Client,
which is responsible for caching records that applications have
requested. The resolver relies almost entirely upon the name servers
it queries. It has the smarts to put together a query, to send it and
wait for an answer, and to resend the query if it
isn't answered, but that's about
all. Most of the burden of finding an answer to the query is placed
on the name server. The DNS specs call this kind of resolver a
stub
resolver.

Other implementations of DNS have had smarter resolvers that could do
more sophisticated things, such as follow referrals to locate the
name servers authoritative for a particular
zone.