CIS-DF Practice Test 17 — 15 Questions

Question 1

A project team wants to establish a parent-child relationship between a Business Application CI and several Server CIs to represent hosting dependencies. Which relationship type should they configure?

Accepted Answer

Hosted on::Hosts. The 'Hosted on::Hosts' relationship type is the correct CSDM relationship to represent that a Business Application (or Application Service) is hosted on a Server CI. It establishes a parent-child dependency where the application is 'Hosted on' the server, and the server 'Hosts' the application. This accurately models the hosting dependency the project team wants to represent.

Answer

Depends on::Used by

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Runs on::Runs

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Connected by::Connected by

Question 2

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?

Accepted Answer

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 in ServiceNow allow administrators to define which data source wins when multiple sources update the same CI attribute. By navigating to CI Class Manager, selecting the cmdb_ci_linux_server class, and configuring Data Source Precedence for the 'Operational status' attribute, the administrator can assign a higher priority to 'ServiceNow' (Discovery) than the third-party source. This ensures that when both sources provide data, Discovery's value is authoritative, overriding the stale third-party data.

Answer

Add a Business Rule on cmdb_ci that checks the sys_updated_by field and aborts updates from the third-party source.

Answer

Modify the Discovery schedule to run after the third-party integration job completes.

Answer

Create an Access Control List (ACL) that restricts write access on the cmdb_ci_linux_server table for the third-party integration user.

Question 3

Which CSDM domain represents the core conceptual view of applications before they are deployed into specific environments?

Accepted Answer

Design. The Design domain in the Common Service Data Model (CSDM) represents the conceptual view of applications and services before they are deployed into specific environments. It includes layers such as Business Capabilities, Business Applications, and Application Services, which define what the application is intended to do and how it is structured logically. This domain is distinct from the Manage Technical Services domain, which deals with the actual deployed instances and their operational management. Therefore, Design is the correct answer as it captures the pre-deployment, conceptual perspective.

Answer

Manage Technical Services

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Foundation

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Sell/Consume

Question 4

An administrator needs to ensure that historical changes to data governance remediation tasks are easily tracked. Which platform feature automatically tracks changes to task work notes, state transitions, and assignments?

Accepted Answer

Task Activity Stream and Audit Log. The Task Activity Stream and Audit Log is the platform feature that automatically records field-level changes, work note additions, state transitions, and assignment changes on task records, including governance remediation tasks. It provides a chronological, filterable history without any custom configuration. This is the native mechanism for tracking who changed what and when on a task.

Answer

CMDB Health Audit Table

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Discovery History Table

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Data Certification Log

Question 5

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?

Accepted Answer

Configure Reconciliation Definitions with attribute-level precedence rules.. Reconciliation Definitions in ServiceNow CMDB allow attribute-level precedence rules that determine which data source 'wins' when multiple sources update the same CI attribute. By configuring a reconciliation rule that assigns higher precedence to manually maintained attributes (or excludes the SCCM source from those specific attributes), the infrastructure team's manual edits are preserved while SCCM continues updating other fields. This is the designed mechanism for resolving multi-source attribute conflicts without disabling the integration.

Answer

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

Answer

Modify the Identification Rule to exclude the manual attributes.

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Disable the data source integration entirely.

Question 6

An administrator needs to create a new custom Configuration Item class to track specialized network routers. Where should this class be created within the ServiceNow platform?

Accepted Answer

Configuration > CI Class Manager. Custom CI classes should be created using the CI Class Manager (Configuration > CI Class Manager) in ServiceNow. This tool provides a guided interface to define the class hierarchy, attributes, and relationships, ensuring proper integration with the CMDB and CSDM. It also allows you to extend existing classes and apply class-specific configurations.

Answer

System Definition > Tables

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System Dictionary > New Class

Answer

Configuration > CMDB Properties

Question 7

When designing class hierarchy extensions in the CMDB, which THREE best practices should an implementation specialist follow? (Choose three.)

Accepted Answer

Avoid excessively deep class hierarchies unless justified by distinct identification or attribute requirements.. Option A is correct because keeping class hierarchies shallow avoids unnecessary complexity, reduces inheritance overhead, and prevents fragmentation of CIs across too many tables; a deeper subclass should only be created when it has genuinely distinct identification (e.g., a unique identifier entry) or attribute requirements. Option C is correct because subclassing from the most specific existing parent that already shares the same attributes and behaviors maximizes attribute and behavior reuse, keeps the model normalized, and avoids duplicating fields that already exist higher in the hierarchy. Option E is correct because checking for existing out-of-the-box attributes before adding custom ones prevents redundant or conflicting fields, keeps reporting and CMDB health clean, and avoids breaking baseline functionality that depends on those OOB attributes. Option B is wrong because CI classes must be created and extended through the CI Class Manager, not by manually creating database tables in System Definition, which bypasses the metadata model and breaks identification, reconciliation, and CMDB health. Option D is wrong because creating a brand new base table directly under cmdb for every hardware vendor produces a flat, unnormalized model that duplicates attributes and behaviors instead of leveraging existing classes such as cmdb_ci_hardware or vendor-specific subclasses where appropriate.

Answer

Bypass the CI Class Manager and create database tables directly in System Definition.

Answer

Create a brand new base table directly under cmdb for every new hardware vendor.

Question 8

An auditor requires proof that all discovered Linux servers have a validated business justification attribute. The team uses CMDB Data Governance to enforce this. How can the administrator prove to the auditor that the policy is actively running and enforcing this rule?

Accepted Answer

Show the CMDB Data Governance Policy execution history and generated remediation task metrics. CMDB Data Governance policies maintain execution history and generate remediation task metrics that serve as auditable evidence. By showing the policy's execution history (when it ran, what it evaluated) and the generated remediation tasks (with timestamps, assignees, and statuses), the administrator can prove the policy is actively running and enforcing the business justification rule. This is the direct, purpose-built evidence an auditor needs.

Answer

Provide a screenshot of the Discovery Schedule configuration

Answer

Export the entire sys_audit table to CSV

Answer

Display the baseline CI Class Manager JSON payload definition

Question 9

An organization wants to track performance metrics for Service Mapping, specifically measuring the average time taken to complete full discovery maps across all critical business services. Which reporting feature provides this analytics capability?

Accepted Answer

Performance Analytics widgets and dashboards for Service Mapping. Performance Analytics combined with Service Mapping execution logs or out-of-the-box PA widgets for Service Mapping track duration and map completion performance.

Answer

Discovery Schedule Log export

Answer

CMDB Health Dashboard Completeness scores

Answer

CMDB Query Builder execution statistics

Question 10

An administrator is reviewing the CMDB IRE execution logs and notices numerous warnings regarding payloads that skipped attribute updates. Which THREE of the following reasons would cause the IRE to skip updating an attribute on an existing CI? (Choose three.)

Accepted Answer

The attribute is configured to be ignored when incoming values are empty, and the incoming payload provided a blank value.. Option A is correct because the Identification and Reconciliation Engine honors the 'ignore empty values' setting on an attribute; when the incoming payload supplies a blank value and that flag is enabled, the IRE skips the update rather than overwriting the existing value. Option C is correct because Data Source Precedence determines which source is authoritative for a given attribute; if the incoming data source has lower precedence than the source that last populated the attribute, the IRE will not overwrite the existing value. Option D is correct because the IRE performs a value comparison and skips the write when the incoming value is identical to the value already stored, avoiding a no-op update. Option B is not a valid reason because IRE processing does not evaluate table-level Business Rules to decide whether to update an attribute; Business Rules run on record operations, not on the IRE's attribute-level reconciliation logic. Option E is not a valid reason because read access to sys_user is unrelated to attribute-level update decisions in the IRE; the IRE's skip logic is driven by attribute configuration, data source precedence, and value comparison, not by the executing user's access to an unrelated table.

Answer

The target CI table has an active Business Rule that aborts all updates.

Answer

The user executing the integration does not have read access to the sys_user table.

Question 11

An IT manager wants to track software license compliance and installations for a commercial database product. Which table in the Manage Technical Services or Foundation domain represents the installed software instance?

Accepted Answer

Installed Software / Software Instance [cmdb_ci_spkg or cmdb_install_sw]. The Installed Software / Software Instance table (cmdb_ci_spkg for software packages and cmdb_install_sw for installed instances) is the CMDB table that represents a specific installation of software on a device. It captures the software product, version, install date, and the host CI it runs on, which is exactly what is needed to track license compliance and installation counts for a commercial database product. Business Applications, Application Services, and Service Offerings are logical/architectural constructs and do not represent installed binaries on a server.

Answer

Business Application [cmdb_ci_business_app]

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Application Service [cmdb_ci_service_calculated]

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Service Offering [service_offering]

Question 12

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. In ServiceNow's CI Class Manager, identification rules are composed of multiple identification sections (e.g., based on serial number, MAC address, or name). Each section is evaluated in a specific order, and the first section that matches an existing CI is used to identify the CI. The 'Identification Section Order' field within the rule allows you to define which section takes precedence over others. This ordering is critical because it determines which criteria are applied first, ensuring that the most reliable identifiers are used before falling back to less specific ones.

Answer

Class Hierarchy Level

Answer

Identification Rule Priority Matrix

Answer

Reconciliation Definition Weight

Question 13

An administrator is troubleshooting an issue where records ingested via Robust Transform Engine (RTE) are failing to populate the CMDB. Upon inspecting the Robust Transform Engine execution logs, they see errors related to payload identification. Which THREE of the following troubleshooting steps should they perform? (Choose three.)

Accepted Answer

Inspect CI Class Manager identification rules for the target class to ensure the mapped attributes match rule criteria.. Option B is correct because payload identification failures often stem from the target class's identification rules in CI Class Manager not matching the attributes being sent, so verifying that the mapped attributes satisfy the rule criteria is essential. Option C is correct because the CMDB Integration Results and Identification and Reconciliation Engine (IRE) execution logs provide the detailed error descriptions needed to pinpoint why identification is failing after RTE processing. Option E is correct because RTE relies on the field map to translate source payload fields into the mandatory identification attributes (such as serial number, name, or sys_class_name) required by the identification rules, and a mis-mapping directly causes payload identification errors. Option A is not appropriate because restarting MID Servers does not address identification logic or field mapping issues and would only disrupt data collection. Option D is not appropriate because modifying web server memory allocation via system properties is unrelated to RTE payload identification and would not resolve mapping or identification rule mismatches.

Answer

Restart all MID Servers across the enterprise network.

Answer

Modify the instance web server memory allocation via system properties.

Question 14

Which TWO actions can be taken from the CMDB Data Governance application interface? (Choose two.)

Accepted Answer

Defining and editing data quality policies. Option A is correct because the CMDB Data Governance application provides the interface for creating, defining, and editing data quality policies that specify the rules and thresholds used to evaluate CMDB data health. Option D is correct because the same application lets administrators monitor data quality results and review the remediation tasks that are generated when policy violations are detected, so owners can act on them. The other options do not belong: writing custom Apache web server configurations (B) is a web-tier administration task unrelated to CMDB governance, managing ITIL change request CAB approval boards (C) is done in Change Management, and configuring MID Server SSL encryption keys (E) is handled through MID Server and certificate/key management, not the CMDB Data Governance interface.

Answer

Writing custom web server Apache configurations

Answer

Managing ITIL change request CAB approval boards

Answer

Configuring MID Server SSL encryption keys

Question 15

An administrator is troubleshooting a Service Mapping map where a load balancer is mapped correctly, but the backend web servers are missing from the topology. Upon checking the traffic connections, the traffic is visible, but the map traversal stopped. What is the most common reason for this behavior in Service Mapping?

Accepted Answer

The discovery pattern lacks the specific extension or credentials to traverse from the load balancer to the backend nodes.. Service Mapping requires discovery credentials and patterns to traverse from load balancers to backend nodes; if credentials fail or patterns aren't assigned, mapping stops.

Answer

The CMDB Query Builder cache expired during the scan.

Answer

The cmdb_rel_ci table has exceeded maximum indexing thresholds.

Answer

The CMDB Health Correctness rule flagged the load balancer as a duplicate.