CIS-DF Ingest Practice Question
A healthcare enterprise uses both ServiceNow Discovery and a third-party asset management tool to update server records in the CMDB. The third-party tool frequently populates stale operational status data. Using Data Source Precedence rules, how can the administrator ensure that ServiceNow Discovery always overrides the third-party tool for the 'Operational status' attribute on Linux servers?
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
✓
Navigate to CI Class Manager, select cmdb_ci_linux_server, and configure Data Source Precedence to assign a higher priority to 'ServiceNow' than the third-party source for 'Operational status'.
Data Source Precedence rules allow administrators to define which data sources take precedence for specific attributes on specific classes.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Add a Business Rule on cmdb_ci that checks the sys_updated_by field and aborts updates from the third-party source.
Why it's wrong here
Business rules can interfere with payload processing and are not the recommended framework mechanism compared to IRE Data Source Precedence.
- ✗
Modify the Discovery schedule to run after the third-party integration job completes.
Why it's wrong here
Job timing does not enforce precedence; if the lower-priority source runs last, it would still overwrite attributes without precedence rules.
- ✓
Navigate to CI Class Manager, select cmdb_ci_linux_server, and configure Data Source Precedence to assign a higher priority to 'ServiceNow' than the third-party source for 'Operational status'.
Why this is correct
CI Class Manager allows granular precedence configuration per class, attribute, and data source.
- ✗
Create an Access Control List (ACL) that restricts write access on the cmdb_ci_linux_server table for the third-party integration user.
Why it's wrong here
ACLs block all updates and will cause the integration to fail entirely rather than gracefully handle precedence.
About these practice questions
Courseiva writes every CIS-DF question from scratch — 320 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official ServiceNow exam blueprint
This CIS-DF 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 CIS-DF exam.