A domain is a logical grouping of networked computers and resources. In order to connect a computer to a domain, you need to have an account with privileges to join the domain.
There are several ways to connect a computer to a domain. One way is to use the netdom command. To do this, open a command prompt and type netdom join /domain:.
You can also use the Active Directory Users and Computers tool to join a computer to a domain. To do this, open the tool, right-click on the computer you want to join to the domain, and select …