Understanding Active Directory Concepts And Administration Tasks

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In the Windows Server 2003 family and Active Directory, there are several new concepts and some MCSE 2003 exams(http://www.mcse-70-297.com)
changes to the concepts used in Windows NT. These concepts include replication, trust relationships, change and configuration management, group policies, DNS, and object naming. It is important that you understand the meaning of these concepts as they apply to Active Directory. In addition, you should also familiarize yourself with the Active Directory administration tasks, which correspond to the chapters in this training kit.

Users and services should be able to access directory information at any time from any computer in the domain tree or forest. Replication ensures that changes to a domain controller are reflected in all domain controllers within a domain. Directory information is replicated to domain controllers both within and among sites.

The information stored in the directory (in the Ntds.dit file) is logically partitioned into four categories. Each of these information categories is referred to as a directory partition. A directory partition is also referred ...
... to as a naming context. These directory partitions are the units of replication. The directory contains the following partitions:

Schema partition This partition defines the objects that can be created in the directory and the attributes those objects can have. This data is common to all domains in a forest and is replicated 70-297 Exam(http://www.mcse-70-297.com)
to all domain controllers in a forest.