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Lesson 6 Create a child domain
Objective Create a child of the root domain.

Create Child of the Root Domain

After you establish the root domain, you can create additional domains within the tree if your network plan requires multiple domains. Each new domain within the tree will be a child domain[1] of the root domain or a child domain of another child domain.

This shows a child domain

How to create Child Domain

As with other phases of the installation process, you begin creating a child domain by starting the Active Directory Installation Wizard. When the wizard asks you which installation option you'd like to follow:
  1. Click Domain controller for a new domain.
  2. Select Create a new child domain in an existing domain tree, as shown here:

This is the box where you request to install a child domain
  1. Then, as when creating a root domain, specify the following information:

  1. The username, password, and domain name of a user account in the Enterprise Admins group, which exists in the root domain of the forest
  2. The DNS name of the parent domain and the name of the new child domain
  3. The NetBIOS name of the new domain
  4. The locations for the Active Directory database and log files
  5. The location of the shared system volume
  1. Once you have decided where and under what name to place the child domain, you will have to decide on the permissions status of this particular domain, that is, whether to weaken permissions to support users who access the network through remote access servers running Windows NT 4.0, as shown here:

This shows the box where you will specify the permissions status of the child domain.

After you finish specifying the installation information, the wizard installs Active Directory, converts the computer to a domain controller, and adds the consoles described earlier to the Administrative Tools menu on that computer.

[1] Child domains: A domain located in the namespace tree directly under another domain name (the parent domain), which contains the name of the parent in its own name. Example: is a child domain of the parent domain.
For instance, a domain named is a child of the root domain, The next domain that you create within that tree can be a child of or a child of