DNS is always configured first for ad to work properly
Active Directory Domains And Trusts console
In Windows Server 2011 it is called Active Directory.
Active Directory was previewed in 1999, released first with Windows 2000 Server edition, and revised to extend functionality and improve administration in Windows Server 2003. Additional improvements were made in Windows Server 2003 R2. Active Directory was refined further in Windows Server 2008 and Windows Server 2008 R2 and was renamed Active Directory Domain Services. Active Directory was called NTDS (NT Directory Service) in older Microsoft documents. This name can still be seen in some Active Directory binaries.
Prepare your infrastructure with the right IP addresses and subnets, configure a new subnet and site on the active directory sites and services
Active Directory
ntds.dit
ntds.dit
The following changes are available in Windows Server 2008 R2:Active Directory Recycle Bin Active Directory module for Windows PowerShell and Windows PowerShell™ cmdletsActive Directory Administrative CenterActive Directory Best Practices AnalyzerActive Directory Web ServicesAuthentication mechanism assuranceOffline domain joinManaged Service AccountsActive Directory Management PackBridgehead Server Selection
Active Directory on a Windows Server 2003 Networkhttp://technet.microsoft.com/en-us/library/cc780036.aspxit contains the logical diagram
Just run 'dcpromo'.
Windows Server 2003, Web Edition
The term is active directory dns integrated means that during replication of AD all changed/ updated data is replicated and we dont have to replicate DNS zone files(which contains information aout the dns records) seperately . Active Directory-integrated DNS enables Active Directory storage and replication of DNS zone databases. Windows 2000 DNS server, the DNS server that is included with Windows 2000 Server, accommodates storing zone data in Active Directory. When you configure a computer as a DNS server, zones are usually stored as text files on name servers - that is, all of the zones required by DNS are stored in a text file on the server computer. These text files must be synchronized among DNS name servers by using a system that requires a separate replication topology and schedule called a zone transfer However, if you use Active Directory-integrated DNS when you configure a domain controller as a DNS name server, zone data is stored as an Active Directory object and is replicated as part of domain replication.