The domain controller in which you make all schema changes is which role?

The domain controller in which you make all schema changes is which role?

• A. Schema Master
• B. PDC Emulator Master
• C. Domain Naming Master
• D. Infrastructure Master

Answer: (A)

The key concept is which FSMO role controls schema changes in Active Directory. The Schema Master is the single domain controller in the forest that can modify the AD schema. The schema defines all object types and their attributes, so only this role can extend or alter those definitions. When you extend the schema, the change is made on the Schema Master and then replicated to all other domain controllers. Other FSMO roles handle different tasks—such as password updates and time on the PDC Emulator, adding or removing domains with the Domain Naming Master, cross-domain reference updates with the Infrastructure Master, and SID allocation with the RID Master—but they do not govern schema changes.

The key concept is which FSMO role controls schema changes in Active Directory. The Schema Master is the single domain controller in the forest that can modify the AD schema. The schema defines all object types and their attributes, so only this role can extend or alter those definitions. When you extend the schema, the change is made on the Schema Master and then replicated to all other domain controllers. Other FSMO roles handle different tasks—such as password updates and time on the PDC Emulator, adding or removing domains with the Domain Naming Master, cross-domain reference updates with the Infrastructure Master, and SID allocation with the RID Master—but they do not govern schema changes.