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Each Active Directory domain has a Domain Naming Context, which
contains domain-specific data. The root of this NC is represented by a
domain’s distinguished name (DN) and is typically referred to as the NC
head. For example, the http://mycorp.com domain’s DN would
be dc=mycorp,dc=com. Each domain
controller in the domain replicates a copy of the Domain NC.
Table 3-2 contains a list of the default top-level containers found in a Domain NC. Note that to see all of these containers with the Active Directory Users and Computers (ADUC) snap-in, you must select View?Advanced Features from the menu. Alternatively, you can browse all of these containers with Ldp or the ADSI Edit tool available in the Windows Support Tools on any Windows Server 2003 or Windows 2000 CD. Windows Server 2008 includes ADSI Edit out of the box.