CIS-DF Configuration — 20 Questions

Question 1

You notice that a specific data source (e.g., SCCM) is overwriting critical configuration attributes that are manually maintained by your infrastructure team. How should you prevent this data source from updating those specific attributes?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Configure Reconciliation Definitions with attribute-level precedence rules.. Reconciliation definitions allow administrators to set attribute-level precedence, ensuring authoritative sources can protect specific fields from being overwritten by secondary discovery sources.

Answer

Create a Business Rule on the cmdb_ci table to check the updated-by user.

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Modify the Identification Rule to exclude the manual attributes.

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Disable the data source integration entirely.

Question 2

A user wants to view the parent-child relationships and upstream/downstream dependencies of a core router in a graphical map format. Which ServiceNow feature should they open?

Accepted Answer

Dependency Views. Dependency Views provide a graphical representation of configuration items and their relationships.

Answer

CI Class Manager

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CMDB Query Builder

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CSDM Dashboard

Question 3

A team is designing a custom CMDB class for virtual storage arrays. They need to ensure that when a physical host is deleted, the dependent virtual storage array records are also cleaned up. Where should this cascading delete behavior be defined?

Accepted Answer

CI Class Manager under the relationship rules section. Relationship rules (cmdb_rel_rule) define parent-child relationships and specify cascading behaviors like cascade delete for CIs.

Answer

Business Rules on the cmdb_ci table

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Data Dictionary [sys_dictionary] attribute settings

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IRE payload processor scripts

Question 4

An administrator is reviewing the CMDB class hierarchy and needs to modify attributes that apply to all types of servers (Linux, Windows, AIX). Which table should be updated to ensure all server sub-classes inherit the new attribute?

Accepted Answer

cmdb_ci_server. The cmdb_ci_server table is the parent class for all server types, making it the ideal location for attributes common to all servers.

Answer

cmdb_ci

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cmdb_ci_win_server

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cmdb_ci_computer

Question 5

Your enterprise has acquired a company that uses custom naming conventions, causing duplicate CIs to be created during discovery. Which tool should you use to examine and adjust how incoming CIs are matched against existing records in the CMDB?

Accepted Answer

CI Class Manager. The Identification and Reconciliation Engine (IRE) uses identification rules to determine if an incoming CI matches an existing record before inserting or updating.

Answer

Data Normalization Engine

Answer

CMDB Health Dashboard

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Dependency View

Question 6

When configuring a new identification rule for a custom CI class using the CI Class Manager, you need to specify criteria that take precedence over other criteria. What element of the identification rule controls this priority?

Accepted Answer

Identification Section Order. Identification rule entries have an order sequence (priority) that dictates which set of criteria the IRE evaluates first.

Answer

Class Hierarchy Level

Answer

Identification Rule Priority Matrix

Answer

Reconciliation Definition Weight

Question 7

Your organization wants to understand the impact of a failing database server on dependent business applications. Which component of the CMDB architecture must be configured to establish this dependency link?

Accepted Answer

Configuration Item Relationship (cmdb_rel_ci). Relationships between configuration items are stored in the Configuration Item Relationship table (cmdb_rel_ci), defining how CIs depend on or connect to one another.

Answer

CI Class Manager

Answer

Identification and Reconciliation Engine (IRE)

Answer

Discovery Schedule

Question 8

An administrator needs to create a new custom Configuration Item class for specialized industrial IoT gateways that inherit base attributes from the Hardware class. Which table should be the parent table for this new class?

Accepted Answer

cmdb_ci_hardware. Custom CI classes representing physical hardware typically inherit from the cmdb_ci_hardware table to leverage existing hardware attributes and identification rules.

Answer

cmdb_rel_ci

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cmdb_ci

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cmdb

Question 9

Where in ServiceNow should an administrator navigate to inspect the current list of CMDB classes, review class attribute counts, and check identification rules?

Accepted Answer

Configuration > CI Class Manager. The CI Class Manager is the centralized workspace for managing CMDB class definitions, attributes, and identification rules.

Answer

System Definition > Tables

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System UI > Forms

Answer

Configuration > CMDB Health Dashboard

Question 10

An enterprise is planning to deploy a complex multi-tier application architecture. They want to ensure that application services are mapped using the correct relationship types between technical CIs and logical service nodes. Which recommended relationship type represents the connection between a logical application service and its running software instance?

Accepted Answer

Runs on / Runs. The 'Hosted on' or 'Runs on / Runs' relationship types are standard for connecting software instances and application components to underlying hosting CIs.

Answer

Contains / Contained by

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Used by / Uses

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Connects to / Connected by

Question 11

An administrator needs to create a query that pulls all virtual machines running on ESXi hosts where the host status is 'Maintenance'. Which tool is best suited for building this multi-table query visually without writing SQL or custom scripts?

Accepted Answer

CMDB Query Builder. CMDB Query Builder allows users to construct visual, multi-table queries traversing relationships and attributes across the CMDB.

Answer

Report Designer

Answer

CI Class Manager

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Performance Analytics

Question 12

Your organization wants to ensure that all virtual machine CIs contain a mandatory 'Environment' tag attribute. Where should this attribute be added to ensure it is inherited by all virtual machine subclasses?

Accepted Answer

cmdb_ci_vm_instance table. Adding the attribute to the cmdb_ci_vm_instance (or parent computer/hardware) class ensures inheritance across all underlying VM subclasses.

Answer

cmdb_ci_appl table

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cmdb_rel_ci table

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sys_user table

Question 13

An integration script is passing a complex payload containing multiple related CIs to the Identification and Reconciliation Engine (IRE) via the script include 'JSONUtils' or 'CmdbUtil'. Which payload structure is required for the IRE to correctly process related CIs in a single transaction?

Accepted Answer

A root object containing an 'items' array for the CIs and a 'relations' array specifying parent, child, and relationship type references.. The IRE payload requires a structured JSON object containing an 'items' array for the CIs and a 'relations' array to define relationships between items in the payload.

Answer

Separate REST API calls for each CI followed by a manual relationship creation call.

Answer

A CSV file attached to a Data Source record processed exclusively by a Transform Map.

Answer

A flat array of CI records with parent and child reference ID fields embedded directly in each CI record.

Question 14

When configuring CMDB health metrics, which of the following represents one of the three core pillars measured by the CMDB Health Dashboard?

Accepted Answer

Completeness. The CMDB Health Dashboard measures three core pillars: Completeness, Correctness, and Compliance.

Answer

Security

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Performance

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Availability

Question 15

Your team is troubleshooting a problem where discovery payloads for network gear are failing identification because multiple network devices share the same MAC address due to virtual routing and switching configurations. How can you resolve this in the CI Class Manager?

Accepted Answer

Modify the identification rule for the network gear class to include secondary unique identifiers like serial number or IP address in combination with MAC address.. Adjusting the identification rule criteria for the network gear class—such as including serial number or IP address alongside MAC address—resolves ambiguous matching.

Answer

Create a Business Rule to merge duplicate records after discovery runs.

Answer

Change the discovery schedule interval to prevent overlapping scans.

Answer

Disable the MAC address attribute from the cmdb_ci table entirely.

Question 16

When designing a custom CI class hierarchy, what is the primary benefit of inheriting from an existing parent class rather than creating an entirely independent base table?

Accepted Answer

It automatically inherits parent class attributes, identification rules, and relationship definitions.. Inheritance allows the new class to automatically leverage existing attributes, identification rules, and relationship definitions associated with the parent class.

Answer

It bypasses the need for IRE processing.

Answer

It prevents the table from ever being deleted.

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It automatically populates data from external discovery sources without mapping.

Question 17

Which ServiceNow table is designated as the universal base table from which all Configuration Item classes ultimately inherit?

Accepted Answer

cmdb. The cmdb table is the root table for all configuration items in ServiceNow.

Answer

cmdb_ci

Answer

cmdb_rel_ci

Answer

task

Question 18

An administrator wants to ensure that all database instance CIs have a populated 'Assigned to' field. Which CMDB Health metric configuration should be updated to track this requirement?

Accepted Answer

Completeness Audit Rules. Completeness health rules are used to audit whether mandatory or recommended fields (such as 'Assigned to') are populated on CIs.

Answer

Compliance Audit Policies

Answer

Correctness Audit Rules

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Identification Rules

Question 19

An administrator is configuring a Robust Transform Engine (RTE) integration to populate the CMDB from a third-party asset management system. Why is RTE recommended over a standard Transform Map for CMDB data loads?

Accepted Answer

RTE processes data through the Identification and Reconciliation Engine (IRE), preventing duplicates and enforcing data integrity.. Robust Transform Engine integrates natively with the Identification and Reconciliation Engine (IRE), ensuring data is properly reconciled and duplicate CIs are prevented.

Answer

RTE automatically translates foreign languages in source data payloads.

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RTE eliminates the need for staging tables during data imports.

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RTE bypasses all access control lists to accelerate import times.

Question 20

Your organization has deployed multiple datacenters, and engineers want to restrict visibility of specific server CIs so that regional support teams only see their local hardware. Which mechanism should be used to achieve class-level or record-level data segregation in the CMDB?

Accepted Answer

Access Control Lists (ACLs) combined with location or company attributes. Domain Separation or Contextual Security (Security Rules / ACLs) can restrict access to CMDB records based on attributes like location or company.

Answer

CI Class Manager hiding classes from navigation

Answer

Modifying Discovery Schedule target IP ranges

Answer

Disabling Dependency Views for non-admin users