Which feature allows for updates to be immediately recognized across multiple Domain Controllers?

• A. Single-master replication
• B. Multimaster replication
• C. Caching directory information
• D. Periodic sync

Answer: (B)

Multimaster replication is the feature that allows for updates to be immediately recognized across multiple Domain Controllers. This approach enables any Domain Controller to accept updates and replicate those changes to other Domain Controllers within the same directory service. Because every Domain Controller can act as a peer, the system can efficiently manage updates from various locations, ensuring that changes are not only processed but also propagated quickly.

The strength of multimaster replication lies in its ability to enhance availability and fault tolerance. In scenarios where one Domain Controller becomes unavailable, others can still handle updates and maintain directory integrity without significant disruptions.

In contrast, single-master replication restricts updates to a single Domain Controller, necessitating that all changes must route through that controller before they can propagate to others. This can create bottlenecks and increase the chances of delays in updates. Caching directory information provides a temporary storage solution but does not ensure immediate recognition of changes across controllers. Periodic sync implies a delayed transfer of updates rather than real-time propagation, which can lead to outdated information in some directories until the sync occurs.