Creating Sites
When you install Active Directory on the first domain controller in a domain, a site object named Default-First-Site-Name is automatically created in the Sites container on the Active Directory Sites And Services console. The first domain controller for the domain is then installed into this site. Subsequent domain controllers are installed either into the site of the source domain controller (assuming the IP address maps to the site) or into an existing site. When your first domain controller has been installed, you can rename Default-First-Site-Name to the name you want to use for the site.
When you install Active Directory on subsequent servers, if alternate sites have been defined in Active Directory and the IP address of the installation computer matches an existing subnet in a defined site, the domain controller is added to that site. Newly installed domain controllers that do not have a subnet identifier matching one of the previously defined sites will be placed in the site named Default-First-Site-Name. If you rename the Default-First-Site-Name site to something different, you’ll find the new domain controllers in that location.
Define a site for
Each LAN or set of LANs that are connected by a high-speed backbone.
Each location that does not have direct connectivity to the rest of the network and is reachable only by SMTP mail.
Networks separated by links that are heavily used during some MCSE 2003 exams parts of the day and idle during other parts of the day. You can then schedule replication between sites to prevent replication traffic from competing with other traffic during high usage hours.
In some situations, it might not be efficient to place a domain controller in a site. These situations include
Sites with small numbers of users For sites with a small number of users,
using available bandwidth to log on and query the directory might be more economical than adding a domain controller.
Small sites that have client computers but no servers For sites with no servers, a domain controller is not necessary. Users can still log on using cached credentials if the site link fails. Because there are no server-based resources at the site, there is no need for further authentication.
To remove a domain controller object from a site, complete the following steps:
1.Click Start, point to Administrative Tools, and then click Active Directory Sites And Services.
2.In the Active Directory Sites And Services console tree, right-click the domain free CompTIA practice IT questions controller object that you want to remove, and then click Delete.In the Active Directory message box, click Yes.
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