Which server is the Backup Domain Controller (DC02) in the Enclave Server setup?

• A. Backup Domain Controller (DC02)
• B. Primary Domain Controller (DC01)
• C. Virtual Machine (VM01) Server
• D. Information Assurance Server (IA01)

Answer: (A)

In a domain environment, redundancy comes from having more than one domain controller: one acts as the primary, and another serves as a backup to keep authentication and directory services available if the primary goes down. The Backup Domain Controller is the server designated to hold a replica of the Active Directory data and take over if needed.

In this Enclave Server setup, that backup role is assigned to the server named DC02. So the server acting as the Backup Domain Controller is DC02. The other options aren’t a backup domain controller in this context: the primary domain controller DC01 is the main DC, the Virtual Machine VM01 isn’t indicated as a domain controller here, and IA01 is an Information Assurance server, not a domain controller.