SNOW-CSA Database Administration and CMDB Practice Question
Your organization uses multiple data sources to populate the CMDB, including ServiceNow Discovery, manual imports, and integrations with an external asset management system. Recently, you have noticed that some CIs appear to be duplicated despite having identification rules configured. Investigation reveals that the identification rules are not correctly matching CIs from the external system. What should you do to resolve the duplication without losing existing relationships?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Modify the identification rule to include a unique identifier from the external system.
Modifying the identification rule to include a unique identifier from the external system will allow the Identification and Reconciliation Engine (IRE) to correctly match existing CIs and prevent duplicates. Option A is wrong because deleting and re-importing could remove change history and relationships. Option B is wrong because manual merging is time-consuming and may not prevent recurrence. Option C is wrong because disabling the integration stops data flow and does not fix the existing duplicates.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Delete all CIs from the external system and re-import.
Why it's wrong here
Deleting loses all relationships and change history; re-import will still fail without correct rules.
- ✗
Manually merge all duplicate CIs using the UI.
Why it's wrong here
Manual merging is labor-intensive and does not address the root cause; duplicates will reappear.
- ✗
Disable the external integration to prevent further duplicates.
Why it's wrong here
Disabling stops the data source but does not fix existing duplicates; it also removes valuable data.
- ✓
Modify the identification rule to include a unique identifier from the external system.
Why this is correct
This ensures that the IRE can match CIs from the external system to existing records.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SNOW-CSA practice question is part of Courseiva's free ServiceNow certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SNOW-CSA exam.