CIS-DF Configuration Practice Test 4 — 15 Questions

Question 1

An administrator needs to ensure that specific critical attributes of a Server CI cannot be overwritten by low-priority discovery sources, while higher-priority integrations can update them. Where is this behavior configured?

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

Accepted Answer

Reconciliation Definitions. Reconciliation definitions in the CMDB govern attribute-level precedence, determining which discovery sources are allowed to update specific CI attributes.

Answer

Discovery Source Exclusion rules

Answer

CI Class Manager attribute properties

Answer

Access Control Lists (ACLs) on the cmdb_ci table

Question 2

When designing a custom CI relationship between two new classes, an administrator needs to ensure that relationship suggestions appear correctly when using Dependency Views. Where are relationship rules defined to control valid parent-child pairings?

Accepted Answer

Suggested Relationships (Configuration > CI Relationships > Suggested Relationships). Relationship Rules define which parent and child CI classes are permitted to have specific relationship types between them.

Answer

Dictionary Overrides on cmdb_rel_ci

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CI Class Manager > Relationship Tab

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Discovery Schedule filters

Question 3

A company deploys a multi-tenant cloud environment. They need to ensure that CIs belonging to Tenant A are logically segregated and cannot be viewed or modified by users belonging to Tenant B, while utilizing a single shared CMDB. Which ServiceNow feature should be configured?

Accepted Answer

Domain Separation. Domain Separation is used to segregate data (including CMDB records) between different tenants or business units within a single instance.

Answer

Data Policies enforced on the cmdb_ci table

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Row-level Security via standard ACLs only

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CMDB Baseline auditing

Question 4

Which table stores the actual relationship records connecting configuration items in the ServiceNow CMDB?

Accepted Answer

cmdb_rel_ci. cmdb_rel_ci is the standard m2m (many-to-many) table storing parent, child, and relationship type references for all CMDB relationships.

Answer

cmdb_ci_rel

Answer

task_cmdb_ci_rel

Answer

sys_m2m_cmdb

Question 5

An administrator is troubleshooting an issue where duplicate CIs are being created by an external data feed despite having an identification rule configured. Upon inspecting the payload, they notice the payload uses a custom identifier field not included in the IRE rule. What is the correct way to resolve this?

Accepted Answer

Update the identification rule in the CI Class Manager to include the new attribute as part of the identification criteria.. To incorporate new unique identifiers into matching logic, the identification rule associated with the class must be updated in the CI Class Manager to include the new criteria attribute.

Answer

Modify the transform map script to delete duplicate records after insertion.

Answer

Write a Business Rule on cmdb_rel_ci to merge records with matching names.

Answer

Disable the Identification and Reconciliation Engine for external feeds.

Question 6

A ServiceNow architect is designing a CMDB architecture where CIs from multiple disparate discovery tools need to be ingested. To prevent race conditions and conflicting updates between tools updating the same CIs simultaneously, what mechanism should be utilized?

Accepted Answer

The Identification and Reconciliation Engine (IRE) processing queue and source precedence rules. Payload processing order, IRE processing, and identification simulation help prevent race conditions, but Discovery Source precedence and IRE payload processing queueing manage concurrent updates.

Answer

Manual approval workflows for every inbound payload

Answer

Asynchronous business rules triggered on insert to pause payloads

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Database locks enforced via Table Administration settings

Question 7

An administrator is preparing to create a new custom CI class hierarchy. Which TWO actions should be performed as best practice during this process? (Choose two.)

Accepted Answer

Extend the most specific existing parent class (e.g., cmdb_ci_hardware) rather than the base cmdb_ci table.. Best practices for creating custom classes include ensuring proper parent class extension and defining identification rules so records are handled correctly by the IRE.

Answer

Disable CMDB Health audits globally before creating the class table.

Answer

Always extend the root cmdb table directly to maximize attribute availability.

Answer

Create custom relationships directly on the cmdb table dictionary.

Question 8

When configuring Identification and Reconciliation Engine (IRE) rules for a specialized hardware class, an administrator needs to understand how identification entries and criteria work. Which THREE statements are true regarding IRE rules? (Choose three.)

Accepted Answer

Attributes listed within a single identification criterion are evaluated using AND logic.. IRE rules evaluate criteria sequentially, use AND operations within a criterion, and rely on payload attributes matching defined identifiers.

Answer

Identification rules only apply when data is ingested via Service Graph Connectors, ignoring standard Discovery.

Answer

The IRE automatically creates custom relationship types for every identification rule created.

Question 9

Which TWO metrics are tracked out-of-the-box as part of the CMDB Health Dashboard? (Choose two.)

Accepted Answer

Completeness. CMDB Health tracks Completeness, Correctness, and Compliance. Completeness and Correctness are two primary pillars.

Answer

Availability

Answer

Performance

Answer

Bandwidth

Question 10

An architect is troubleshooting relationship cardinality and integrity issues in the CMDB. Which THREE mechanisms or tools help maintain relationship health? (Choose three.)

Accepted Answer

Suggested Relationships configurations. Suggested relationships, CMDB Health duplicate/orphan audits, and IRE relationship payload processing help maintain relationship integrity.

Answer

Disabling the cmdb_rel_ci table index generation

Answer

Manual SQL direct database updates on the cmdb_rel_ci table

Question 11

Which TWO methods can be used to add a custom attribute to a CI class in ServiceNow? (Choose two.)

Accepted Answer

Using the CI Class Manager by selecting the class and adding the attribute in the Attributes tab.. Custom attributes can be added via the CI Class Manager or through the Dictionary/Tables module (though CI Class Manager is preferred).

Answer

Modifying Discovery patterns via Pattern Designer to store attributes in transient memory.

Answer

Creating a Business Rule with a setDisplayValue script.

Answer

Editing the Form Designer layout for the hardware form.

Question 12

When defining a Reconciliation Definition in ServiceNow to manage attribute precedence, which THREE configurations or behaviors apply? (Choose three.)

Accepted Answer

Rules can target specific CI classes or apply globally across the entire cmdb hierarchy.. Reconciliation definitions use discovery sources, can apply globally or to specific classes, and determine which source has write authority over specific attributes.

Answer

Reconciliation definitions only apply to transactional tables like task, never to cmdb_ci classes.

Answer

Discovery sources not explicitly listed in a precedence rule are denied any ability to update the CMDB entirely.

Question 13

An administrator is reviewing class hierarchy design principles in the CMDB. Which TWO statements describe the purpose of extending existing CI classes rather than creating independent base tables? (Choose two.)

Accepted Answer

Inherited classes ensure proper compatibility with CMDB Health, IRE, and Dependency Views.. Extending existing classes allows inheritance of standard attributes, relationships, and ensures compatibility with CMDB tools like Discovery and CSDM.

Answer

Independent base tables provide better integration with out-of-the-box Service Graph Connectors automatically.

Answer

Extending base tables allows CIs to bypass mandatory access control lists (ACLs).

Answer

Creating independent tables eliminates the need for any identification rules.

Question 14

An organization is utilizing CSDM (Common Service Data Model) and needs to relate technical CIs to business services and applications. Which THREE relationship types or foundational concepts are core to proper CSDM alignment in the CMDB? (Choose three.)

Accepted Answer

Relating Business Applications to Application Services using the 'Consumes::Consumed by' or instance relationship mappings.. CSDM relies on relationship types such as 'Hosted on', 'Used by', and separating application services from business applications.

Answer

Storing all users, business applications, and servers in a single flat cmdb_ci table without differentiation.

Answer

Using the task table to store direct relationships between hardware and software.

Question 15

An administrator needs to understand where a newly discovered database instance CI's attributes are stored across the CMDB table hierarchy. Which table represents the base class for all Configuration Items in ServiceNow?

Accepted Answer

cmdb. The base class for all CIs in the CMDB is cmdb, which contains core attributes inherited by all child classes.

Answer

cmdb_rel_ci

Answer

sys_object

Answer

cmdb_ci