Que:
Define Windows NT Domains:
Ans:
Ø The Windows NT domain model breaks an organization into
chunks called domains, all
of which are part of an
organization.
Ø The domains are usually organized geographically, which helps
minimize domain-to-domain communication requirements across WAN links.
Ø Each domain is controlled by a primary domain controller
(PDC), which might have one or more backup domain controllers (BDCs) to
kick in if the PDC fails.
Ø All changes within the domain are made to the PDC, which then
replicates those changes to any BDCs.
Ø BDCs are read-only, except for valid updates received from
the PDC.
Ø In case of a PDC failure, BDCs automatically continue
authenticating users.
Ø To make administrative changes to a domain that suffers PDC
failure, any of the BDCs can
be promoted to PDC.
Ø Once the PDC is ready to come back online, the promoted BDC
can be demoted back to BDC status.
Windows
NT domains can be organized into one of four domain models.
1. Single domain: In this model, only one
domain contains all network resources.
2. Master domain: The master model usually
puts users at the top-level domain
and then places network resources, such as shared folders or
printers, in
lower-level domains (called
resource domains). In this model, the resource
domains trust the master domain.
3. Multiple master domain: This is a slight variation
on the master domain
model, in which users might exist in multiple master domains,
all of which
trust one another, and in
which resources are located in resource domains, all
of which trust all the master domains.
4. Complete trust: This variation of the single-domain model spreads users and
resources across all domains, which all trust each other.
You
choose an appropriate domain model depending on the physical layout of the
network, the number of users to be served, and other factors.
Sign up here with your email
ConversionConversion EmoticonEmoticon