Infrastructure Master Role

The domain controller assigned the infrastructure master role is responsible online MCTS certification for updating the group-to-user references whenever the members of groups are renamed or changed. At any time, there can be only one domain controller acting as the infrastructure master in each domain.
When you rename or move a member of a group (and the member resides in a different domain from the group), the group might temporarily appear not to contain that member. The infrastructure master of the group's domain is responsible for updating the group so it knows the new name or location of the member. The infrastructure master distributes the update via multimaster replication.
There is no compromise to security during the time between the member rename and the group update. Only an administrator looking at that particular group membership would notice the temporary inconsistency.
Figure 4-11 shows how the operations master roles are distributed throughout a forest by default. Domain A was the first domain created in the forest (the forest root domain). It holds both of the forest-wide operations MCTS benefits master roles. The first domain con?troller in each of the other domains is assigned the three domain-specific roles.

PDC Emulator Failure The loss of the PDC emulator affects network users. Therefore, when the PDC emulator is not available, you might need to immediately seize the role. If the current PDC emulator will be unavailable for an unacceptable length of time and its domain has clients without Windows Server 2003 client software, or if it contains Windows NT backup domain controllers, seize the PDC emulator role to the domain controller you've chosen to act as the standby PDC emulator. When the original PDC emulator is returned to service, you can return the role to the original domain controller.
Infrastructure Master Failure Temporary loss of the infrastructure master is not visible to network users. It is not visible to network administrators either, unless they have recently moved or renamed a large number of accounts. If the infrastructure master will be unavailable for an unacceptable length of time, you can seize the role to a domain controller that is not a global catalog but is well connected to a global catalog (from any domain), ideally in the same site as a global catalog server. When the original infrastructure master is returned to service, you can transfer the
free Microsoft certification exam questions role back to the original domain controller.