CIS-DF Ingest — Timed 30 Questions

Question 1

An administrator notices that a manual update made to a server's 'Asset tag' attribute by an IT agent is constantly overwritten during the nightly Discovery run, even though Discovery does not directly scan the asset tag. How is this behavior controlled and how should it be resolved?

30 minute time limit — choose an answer to begin.

Accepted Answer

Configure Data Source Precedence to give 'Manual' or a higher-ranking source precedence over 'ServiceNow' for the 'Asset tag' attribute.. Data Source Precedence rules determine which discovery source wins an attribute. If Discovery has a higher precedence or if manual updates are not given precedence, updates can overwrite manual changes unless exclusion or precedence rules are set.

Answer

Check the 'No-Delete' flag on the Discovery Schedule record.

Answer

Disable the 'Asset tag' field mapping in the IRE payload processor script.

Answer

Set the cmdb_ci table to read-only for the Discovery integration user via ACLs.

Question 2

An implementer is setting up a new integration using IntegrationHub to ingest network switch data into the CMDB. Which API should be utilized within the script or action to ensure that the payload passes through deduplication and reconciliation checks?

Accepted Answer

SNC.IdentificationEngine.createOrUpdate(). The IRE must be invoked via its dedicated script include or API (such as JSONUtil or SNC.IdentificationEngine) rather than direct table insertions.

Answer

RestMessageV2.execute()

Answer

CMDBAPI.ingest()

Answer

GlideRecord.insert()

Question 3

During a Discovery run, a Linux server is identified, but its associated IP interfaces are missing from the cmdb_ci_ip_address table. Reviewing the payload processor logs shows an IRE payload error regarding related items. What is the most likely cause of this issue?

Accepted Answer

The identification rule for the IP address class lacks a valid criteria definition matching the hardware CI.. Identification rules for related lists or embedded objects in the payload must include valid relation identifiers, or the payload structure must correctly define parent-child relationships.

Answer

Discovery schedules do not support ingesting IP addresses automatically.

Answer

The cmdb_ci_ip_address table requires manual creation of records due to security restrictions.

Answer

Data Source Precedence has marked IP addresses as read-only.

Question 4

An architect is designing an integration to ingest virtual machines from a custom cloud provider into the CMDB using Robust Transform Engine (RTE). The payload contains nested objects representing datastores attached to each VM. How should the RTE be configured to handle these related child objects?

Accepted Answer

Configure RTE Related Item Processors to define the relationship and map fields from the nested datastore object to the target relationship table.. RTE allows complex mappings using complex data streams and related item processors to handle hierarchical JSON/XML payloads.

Answer

Set the coalesce field on the Transform Map to point to the datastore ID.

Answer

Flatten the JSON payload in a Business Rule before it reaches the Import Set table.

Answer

Create two separate import set tables and link them using a standard GlideRecord script in a Transform Map.

Question 5

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 allow administrators to define which data sources take precedence for specific attributes on specific classes.

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 6

An administrator is configuring a new Import Set to ingest third-party server data into the cmdb_ci_server table. During testing, they notice that records are being inserted as duplicates rather than updating existing CIs because the incoming payload lacks a unique identifier match. Which component should be configured to ensure the Identification and Reconciliation Engine (IRE) correctly identifies the existing CI?

Accepted Answer

Configure an Identification Rule in CI Class Manager for cmdb_ci_server.. Identification Rules are used by the IRE to determine if an incoming payload matches an existing CI in the CMDB, preventing duplicates.

Answer

Modify the coalesce setting on the Transform Map to use serial number.

Answer

Enable 'Robust Transform Engine' on the data source properties.

Answer

Create a Data Source Precedence rule for the import set.

Question 7

When reviewing the Identification and Reconciliation Engine (IRE) payload processing results, an administrator notices an error stating 'Mandatory attributes missing for identification'. What does this error signify?

Accepted Answer

The incoming payload lacks one or more attributes specified in the identification rule criteria for that class.. The payload did not contain the fields required by the class's identification rule (e.g., serial number or MAC address).

Answer

The Transform Map is missing mandatory field mappings.

Answer

The target CI table has mandatory dictionary fields that are not populated by the form layout.

Answer

The Discovery source name is invalid.

Question 8

An organization uses Service Mapping to map a critical e-commerce application. During mapping, a custom web server process is discovered on a host, but it fails to establish a relationship with the underlying software installation. Where should the administrator verify or configure the identification rules for process classification and mapping?

Accepted Answer

In Service Mapping Configuration, review and adjust Process Classifiers and Application Patterns.. Process classification and identification for Service Mapping are configured via Application Patterns and Process Classifiers within Service Mapping configuration.

Answer

In Robust Transform Engine (RTE) definitions, map the process table to the software installation table.

Answer

In CI Class Manager, modify the Identification Rule for cmdb_ci_appl.

Answer

In Data Source Precedence rules, set Discovery as the primary source for process tables.

Question 9

Which ServiceNow utility should an administrator use to view and test identification rules, simulated payloads, and payload processing results for troubleshooting CI ingestion issues?

Accepted Answer

IRE Test Payload module (or Debug IRE). The IRE has a dedicated testing utility called 'Debug IRE' or the 'Identification and Reconciliation Engine' test simulator module.

Answer

Discovery Log Analyzer

Answer

Transform Map Simulator

Answer

Service Mapping Workbench

Question 10

An organization is ingesting printer CIs from a legacy asset system via Import Sets. Some incoming records contain a serial number with leading/trailing whitespace, causing the IRE to treat them as distinct CIs rather than matching existing ones. Where can data normalization be applied to clean this data before it reaches the IRE?

Accepted Answer

Use Robust Transform Engine (RTE) field transformations (such as Trim or Regex) during the data ingestion mapping phase.. Data normalization rules (Data Normalization plugin / Robust Transform Engine field transformations) can clean and standardize incoming data before IRE processing.

Answer

Modify the IRE Identification Rule to automatically ignore whitespace.

Answer

Write a Client Script on the target cmdb_ci table to strip whitespace upon insert.

Answer

Configure a Data Policy to reject records containing whitespace.

Question 11

An enterprise has multiple disjointed data sources feeding network gear into the CMDB. Source A provides high-accuracy IP data, while Source B provides high-accuracy serial numbers. However, their discovery source names differ slightly in casing and format across jobs. How does the IRE handle discovery source strings during reconciliation?

Accepted Answer

Discovery source strings are case-sensitive and must be standardized; inconsistent naming causes the IRE to treat them as distinct data sources, bypassing intended precedence rules.. Discovery source names must be registered in the sys_object_source or cmdb_sync_v2 framework properly, and matching is case-sensitive or managed through standardized discovery source entries.

Answer

The IRE maps discovery sources based on IP address ranges rather than the discovery source string.

Answer

The IRE automatically normalizes all discovery source strings to lowercase and strips special characters.

Answer

Discovery source names only affect reporting and have no impact on IRE reconciliation behavior.

Question 12

An administrator is troubleshooting a Scheduled Data Import that uses an IntegrationHub REST step to pull server data. The import completes, but no CIs are created or updated in the CMDB, and the import set rows show a status of 'Processed'. Where should the administrator check to see if the IRE rejected the payload?

Accepted Answer

Check the CMDB Integration Results (cmdb_integration_log) or IRE processing logs for detailed payload error messages.. When IRE processes payloads via import sets or integration hub, error details are logged in the CMDB IRE execution logs or CI payload logs.

Answer

Check the System Log (syslog) for standard warning messages tagged with 'TransformMap'.

Answer

Review the Email Notifications table for failed ingestion alerts.

Answer

Inspect the Discovery Status dashboard.

Question 13

When configuring an identification rule for a custom hardware CI class, an administrator can select multiple attributes to form a compound identification rule. What is the operational significance of selecting multiple attributes within a single rule entry?

Accepted Answer

All specified attributes in the rule entry must match an existing CI record for the IRE to identify it as a match.. In a compound identification rule, all specified attributes must match an existing CI for the IRE to consider it a match.

Answer

The IRE will consider it a match if any single attribute matches the incoming payload.

Answer

The IRE will automatically merge records if any two attributes match.

Answer

Multiple attributes are only used for reporting and have no effect on CI identification.

Question 14

An organization implements CSDM and wants to ingest business applications and their hosting environments. They receive a payload containing a Business Application CI that references a non-existent Application Service CI. How does the IRE handle references to related CIs that do not yet exist in the CMDB?

Accepted Answer

If the payload includes nested identification blocks for the related CI, the IRE will create the missing CI first and then establish the relationship.. Depending on how the payload is structured (using identification entries or reference payloads), the IRE can either create the referenced CI automatically or fail the relationship creation if criteria are missing.

Answer

References to non-existent CIs are automatically converted into Incident records in IT Service Management.

Answer

The IRE automatically creates dummy placeholder records for any unresolving reference.

Answer

The entire payload is always aborted if any single related reference cannot be resolved immediately.

Question 15

An administrator is setting up a ServiceNow Discovery schedule for a subnet in a restricted data center. The Discovery schedule runs successfully, but no new CIs are populated in the CMDB. Upon checking the Discovery status, the probes completed, but the horizontal discovery pattern logs indicate a 'Permission Denied' on WMI/SSH commands. Where should the administrator verify the credentials used for this ingestion?

Accepted Answer

In the Credentials table (discovery_credentials) or Credential Aliases, ensuring the correct protocol credentials are mapped to the IP range.. Discovery and ingestion via credentials are managed through Credential Aliases and the Credentials table.

Answer

In CI Class Manager under Discovery Source Precedence.

Answer

In the CMDB Health Dashboard under Audit Rules.

Answer

In the Robust Transform Engine source properties.

Question 16

Which ServiceNow table stores the historical relationship between a CI and the various data sources that have updated its attributes, supporting the Data Source Precedence framework?

Accepted Answer

sys_object_source. The cmdb_ci_discovered_items or sys_object_source table tracks the relationship between CIs and their external ingestion sources.

Answer

cmdb_health_result

Answer

sys_import_set_row

Answer

cmdb_rel_ci

Question 17

An organization is migrating from a legacy configuration management database to ServiceNow. They load initial server records using custom import sets without the IRE. Later, they enable ServiceNow Discovery. They notice that every discovered server creates a duplicate CI right alongside the imported record. What caused this duplicate creation?

Accepted Answer

The legacy import bypassed the IRE, failing to populate the sys_object_source tracking table with the correct native keys and discovery source identifiers.. Records ingested without the IRE lack the proper sys_object_source tracking and native identifier linkage expected by Discovery and the IRE, resulting in failure to recognize existing records.

Answer

Discovery is hardcoded to ignore any records created by Transform Maps.

Answer

The cmdb_ci table has a business rule that forces duplicate insertion for security purposes.

Answer

Data Source Precedence rules were not set to 'Manual' before running Discovery.

Question 18

An administrator is configuring a Robust Transform Engine (RTE) definition for a complex CMDB data import. They need to ensure that if an incoming record fails identification or has missing mandatory attributes, the entire batch does not fail, but instead logs an error for that specific row. Where is this error handling behavior managed in RTE?

Accepted Answer

Configure error handling options within the Robust Transform Engine Data Stream Definition and field processors to capture row-level exceptions.. RTE error handling and row-level logging are configured within the Robust Transform Engine definitions and associated data stream transformers.

Answer

Set the Import Set transform map property to 'Ignore Errors' globally.

Answer

Modify the IRE engine configuration property 'glide.cmdb.ire.abort_on_error' to false.

Answer

Write a global Business Rule on sys_import_set_row to catch exceptions.

Question 19

An administrator wants to check which identification rules are active for the `cmdb_ci_computer` class. Where in the ServiceNow user interface should they navigate?

Accepted Answer

CI Class Manager -> Select cmdb_ci_computer -> Identification Rule. CI Class Manager is the central location for viewing and configuring identification rules for CI classes.

Answer

Discovery -> Identification -> Classes

Answer

Configuration -> CMDB Properties -> Rules

Answer

System Definition -> Identification Rules

Question 20

A team is building a custom REST API integration that accepts incoming configuration items. They decide to use the Scripted REST API feature. Within the script of the REST resource, how should they invoke the IRE to process the incoming JSON body correctly?

Accepted Answer

Use `sn_cmdb.IdentificationEngine.createOrUpdateCI(discoverySource, payload)` within the script.. Scripted REST APIs can invoke the IRE using the `JSONUtil` or `sn_cmdb.IdentificationEngine` script includes.

Answer

Use the Import Set Web Service table API directly.

Answer

Instantiate a GlideRecord on `cmdb_ci` and call `.insert()` for each item in the JSON body.

Answer

Call `current.update()` after mapping the JSON properties to the request object.