When troubleshooting Active Directory, which of the following is used to identify a replication issue?

Using the Event Viewer to identify a replication issue in Active Directory is effective because it logs detailed information about events that occur within the system. By examining the logs under the Directory Service category, administrators can find specific error messages and warnings related to replication failures, such as issues with domain controllers not being able to communicate or replication errors that hinder updates from being propagated across the network. This centralized logging utility is essential for diagnosing problems and understanding the exact state of Active Directory replication.

While other tools such as Active Directory Users and Computers, ADSI Edit, and PowerShell offer valuable functionalities for managing and querying directory objects, they do not provide the comprehensive event logging capability essential for troubleshooting replication issues. Active Directory Users and Computers is primarily for user and group management, ADSI Edit allows for the editing of directory objects, and PowerShell can be used to run commands that might assist in troubleshooting but does not inherently log events like the Event Viewer does. Therefore, leveraging Event Viewer is the most direct and informative method for identifying replication issues in Active Directory.