Final answer:
Offline Domain Join (ODJ) is the process of making a computer a member of a domain without contacting a domain controller. This is done by creating a file with domain join information using the Djoin.exe command, then transferring it to the target computer.
Step-by-step explanation:
The process that allows a computer to become a member of a domain without having to directly contact a domain controller is known as Offline Domain Join (ODJ). This feature was introduced in Windows Server 2008 R2 and enables administrators to pre-create a computer account in the domain, which includes all the information necessary for the joining. When using ODJ, a file containing domain join information is created using the Djoin.exe command. This file is then transferred to the target computer, which can be offline and not connected to the network at the time. The computer applies the settings from the file when it starts up and becomes a member of the domain without needing to contact a domain controller immediately.