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ServiceNow CIS-DF Exam - Topic 4 Question 1 Discussion
Topic #: 4
The following identification rule for a Hardware CI class has been defined
Two new CI records are imported into the Hardware class of the CMDB:
CI1: The name of this CI record matches the name of an existing CI record in the CMDB.
CI2: The IP address of this CI record matches the IP address of an existing CI record in the CMDB.
Which is correct based on the identification rule and the imported CI records?
Comprehensive and Detailed Explanation (200--300 words):
This question tests understanding of how the Identification and Reconciliation Engine (IRE) evaluates incoming CI data against Identification Rules and their priority order in ServiceNow.
From the identification rule shown:
Serial number (+ type) Priority 100
Serial number Priority 200
Name (Hardware) Priority 300
MAC address + name (Network Adapter) Priority 400
For a CI to be identified and matched, the incoming record must satisfy one complete identifier entry exactly as defined for that class.
CI1 (Name match only)
Although the name matches an existing Hardware CI, name alone is a low-priority identifier (300) and is not sufficient to uniquely identify a Hardware CI unless no higher-priority identifiers exist and the identifier entry criteria are fully satisfied. In practice, Hardware identification relies on serial number--based identifiers, not name-only matching, to avoid false positives. Therefore, CI1 cannot be confidently matched and is inserted as a new record.
CI2 (IP address match)
IP address is not part of any Hardware identification rule shown. IP address is typically used for discovery correlation or network relationships, not as a primary Hardware identifier. Since no identifier entry includes IP address, CI2 does not match any valid identification rule and is also inserted as a new record.
Because neither CI satisfies a valid identifier entry, both records are inserted as new CIs.
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