SERVICENOW-CIS-DISCOVERY CMDB Integration And Maintenance Practice Test 3 — 15 Questions

Question 1

When using the Identification and Reconciliation Engine (IRE), what happens if a payload contains a CI that matches multiple existing CIs based on the identification rule?

Accepted Answer

The payload is rejected with an error indicating an identification rule non-uniqueness.. If a payload contains a CI that matches multiple existing CIs based on the identification rule, the IRE rejects the payload with an error indicating an identification rule non-uniqueness. This prevents ambiguous updates and ensures data integrity by forcing the administrator to resolve the duplicate CIs or adjust the identification rule.

Answer

The match is ignored, and all attributes are updated in both records.

Answer

The first match found is updated.

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A new CI is created as a duplicate.

Question 2

What is the consequence of having an incorrect 'Identification Rule' for a hardware CI class?

Accepted Answer

Discovery may create duplicate CI records for the same physical hardware.. Incorrect rules lead to either duplicate CI records or 'flapping' (repeatedly updating the wrong CI).

Answer

Discovery will stop scanning the network.

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The CMDB Health Dashboard will automatically fix the rules.

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The MID server will lose its credentials.

Question 3

An administrator wants to ensure that data imported from an external asset system does not overwrite data collected by Discovery. How should this be configured?

Accepted Answer

Configure Reconciliation Rules to grant Discovery higher priority for those attributes.. Reconciliation rules allow you to specify which data sources are authoritative for specific CI attributes.

Answer

Change the CI class to read-only.

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Use an Import Set Transform Map script to check the source.

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Disable the external import integration.

Question 4

A pattern is failing to map a specific attribute because the command used returns multi-line output. What is the standard way to handle this in a Discovery Pattern?

Accepted Answer

Use a 'Parse' step with a Regular Expression (Regex) to extract the specific value.. Patterns use parsing steps (like Regex or Split) to convert multi-line output into structured attribute data.

Answer

Use a MID Server script file to process the output.

Answer

Ignore the attribute.

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Change the command to only return a single line.

Question 5

What is the purpose of a 'Discovery Source' in the CMDB?

Accepted Answer

To identify which tool or process created or updated the CI record.. The 'Discovery Source' field identifies which tool (Discovery, Service Mapping, SCCM, etc.) populated or last updated the CI record.

Answer

To store the last successful login time.

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To specify which MID server is authorized to access the CI.

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To define which credentials should be used for a scan.

Question 6

Which action should you perform before modifying a default Discovery Pattern?

Accepted Answer

Create a copy of the pattern.. Default Discovery Patterns are shipped as read-only records that are overwritten during ServiceNow upgrades, so any direct modification would be lost. The supported practice is to create a copy of the pattern, modify the copy, and then activate it so the customized logic is preserved across upgrades. This also allows the original to remain available as a fallback if the custom pattern fails.

Answer

Export the pattern to an XML file.

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Reboot the MID server.

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Delete the original pattern.

Question 7

You are migrating from legacy horizontal discovery to Service Mapping. How should you handle the transition of existing CMDB CI relationships?

Accepted Answer

Ensure existing CIs have stable identification attributes so Service Mapping can build on them.. Service Mapping relies on existing identification rules; existing relationships should be verified for consistency.

Answer

Create a new CMDB class for all Service Mapping CIs.

Answer

Force all CIs to be re-discovered by the same MID server.

Answer

Delete all existing relationships before starting.

Question 8

Which module allows you to visualize the dependencies and connections between CIs in a map view?

Accepted Answer

Dependency View. The Dependency View is the standard ServiceNow interface for visualizing CI relationships.

Answer

CMDB Query Builder

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Discovery Status

Answer

Business Service Map

Question 9

When a CI record is 'Orphaned' according to the CMDB Health Dashboard, what does this mean?

Accepted Answer

The CI has no relationships to other CIs.. An Orphan CI is a CI that has no incoming or outgoing relationships, which is often unexpected for core infrastructure components.

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The CI has no identified owner.

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The CI is not associated with an Asset.

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The CI has not been scanned for over 30 days.

Question 10

What is the primary role of the Identification and Reconciliation Engine (IRE) in the Discovery process?

Accepted Answer

To ensure data integrity and prevent CI duplication.. The IRE acts as a gatekeeper to ensure that only valid, non-duplicate, and authorized data is written to the CMDB.

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To execute discovery probes on target devices.

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To monitor the status of MID servers.

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To map business services based on traffic data.

Question 11

Which of the following best describes the purpose of 'CMDB Data Manager'?

Accepted Answer

To automate the lifecycle management of CIs.. CMDB Data Manager is a ServiceNow application that provides a centralized framework for automating the lifecycle management of Configuration Items (CIs). It allows administrators to define policies that govern how CIs are created, updated, archived, and deleted based on conditions such as staleness, lack of discovery updates, or business rules. This ensures the CMDB remains accurate and free of obsolete data without manual intervention.

Answer

To map IP addresses to subnets.

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To manage MID server credentials.

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To generate reports on CI count.

Question 12

What is the purpose of the 'discovery_id' in a discovery log?

Accepted Answer

To uniquely identify a specific Discovery scan execution.. The discovery_id (or status ID) is a unique identifier for a specific Discovery scan execution, used for troubleshooting.

Answer

To identify the user who triggered the scan.

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To link the device to a specific MID server.

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To mark the CI as 'Discovered'.

Question 13

When a discovery pattern finishes, it creates an 'Identification' payload. Where is this payload processed?

Accepted Answer

Identification and Reconciliation Engine (IRE). The payload is sent to the Identification and Reconciliation Engine (IRE) for processing against the CMDB.

Answer

Discovery Status table

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MID Server

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CMDB CI table

Question 14

What is the primary function of the 'CI Class Manager'?

Accepted Answer

To manage class hierarchy, identification, and reconciliation rules.. CI Class Manager is the centralized UI for managing class hierarchy, identification rules, and reconciliation rules.

Answer

To monitor network traffic.

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To create new Discovery users.

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To update Discovery patterns.

Question 15

You are creating a custom CI class. Which step is essential to ensure that Discovery can identify CIs of this new class?

Accepted Answer

Define an Identification Rule for the new class.. You must create an Identification Rule for the new class, otherwise the system won't know how to handle incoming discovery data for it.

Answer

Add the class to the global discovery schedule.

Answer

Assign a default MID server.

Answer

Publish the class to the Service Catalog.