試験CIS-DF トピック3 問題2 スレッド

InServiceNow, controllingsource precedencewhen multiple authorized data sources update the same CI attributes is a core responsibility ofIdentification and Reconciliation Engine (IRE)governance.
The correct and supported method is toassign priority to each data source in reconciliation rules.
Reconciliation rules determinewhich source winswhen multiple sources attempt to update the same attribute on a CI. By defining source precedence, the Configuration Manager ensures that themost authoritative system of record(for example, Discovery over manual imports, or HR systems over spreadsheets) consistently controls specific attributes or classes.
Option B is incorrect because manually sequencing data source runs is unreliable, does not scale, and violates Data Foundations best practices. Option C only controls how often data is refreshed, not which source is authoritative. Option D is incorrect becauseidentification rulesare used to uniquely identify CIs-not to control attribute-level precedence.
Using reconciliation rules providesdeterministic, auditable, and automated control, which is essential for maintaining CMDB trust and avoiding data conflicts.
Therefore, the correct answer isA - Assign a priority to each data source in reconciliation rules.