SERVICENOW-CIS-DISCOVERY Practice Test 19 — 15 Questions

Question 1

A technician reports that Discovery is updating the 'Last discovered' field, but the 'Operational status' is not changing as expected. Where should you investigate the mapping of Discovery data to the CMDB?

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

Accepted Answer

Identification and Reconciliation Engine (IRE) Data Source Rules. The IRE Data Source Rules determine how Discovery data is mapped to CMDB fields, including operational status. When Discovery updates 'Last discovered' but not 'Operational status', the issue likely lies in the IRE Data Source Rules, which control which data source can update which attributes. Investigating these rules will reveal if operational status is excluded or mapped incorrectly.

Answer

Discovery Log

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CMDB Data Manager

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Discovery Dashboard

Question 2

What is the purpose of the 'Identification' phase in Discovery?

Accepted Answer

To match the discovered CI to an existing one in the CMDB.. The Identification phase in Discovery matches discovered CIs to existing CIs in the CMDB using identification rules. It determines whether a discovered device is a new CI or an existing one that should be updated, ensuring data integrity and preventing duplicates. This is the core purpose of identification.

Answer

To find the IP address of the device.

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To determine what the device is.

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To gather hardware details.

Question 3

You are writing a pattern that requires data from a REST API endpoint that returns a nested JSON array. Which step type is most appropriate to extract a specific attribute from an object located at the third index of the nested array?

Accepted Answer

Parse JSON. The Parse JSON step type is most appropriate to extract a specific attribute from an object located at the third index of a nested JSON array. This step is designed to parse JSON data and allows you to navigate through arrays and objects using JSONPath expressions.

Answer

Table Transformation

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Set Variable

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Regex Extraction

Question 4

A discovery administrator needs to prevent the MID Server from scanning a set of production database servers on the 10.10.0.0/24 subnet, while still allowing discovery of all other devices on that same subnet. The MID Server is already configured and the discovery schedule uses a single IP range that includes 10.10.0.0/24. Which configuration should the administrator use to exclude only the database servers?

Accepted Answer

Create a Discovery IP range exclusion record for the database server IPs.. Discovery IP range exclusions are designed to prevent scanning of specific IPs or subnets that are otherwise part of an included range. By creating an exclusion record for the database server IPs, the administrator ensures those devices are skipped while the rest of the subnet is still discovered. This is the standard method for fine-grained exclusion in ServiceNow Discovery.

Answer

Add the database server IPs to the MID Server's blacklist in the MID Server properties.

Answer

Configure a Discovery IP range exclusion in the MID Server's config file.

Answer

Create an exclusion IP range in the Discovery Schedule for the database server IPs.

Question 5

A discovery administrator is troubleshooting why a Windows server is not being classified correctly during discovery. The server responds to pings and the MID Server successfully runs probes, but the Classification record is not being matched. The administrator verifies that the correct Windows pattern is being triggered. Which configuration should the administrator check to ensure the classification is applied based on the correct criteria?

Accepted Answer

The Classification record's matching criteria and conditions.. Classification records define the conditions under which a discovered device is assigned a specific class. If a device is discovered and patterns run but the classification is not applied, the matching criteria on the Classification record are likely incorrect or too narrow. The administrator should review and adjust those conditions to ensure the server meets them.

Answer

The Discovery Schedule's IP range and MID Server selection.

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The Discovery Behavior's probe order and pattern selection.

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The MID Server's capabilities and supported patterns.

Question 6

A CMDB administrator notices that a Linux server CI created by Discovery has a serial number attribute populated by a third-party import, while Discovery populates the same attribute with a different value. The administrator wants Discovery's value to take precedence over the import when both sources update the CI. Which mechanism should be configured to control this precedence?

Accepted Answer

A CMDB data source precedence rule under CI Class Manager that ranks the Discovery source above the import source for the serial number attribute.. ServiceNow CMDB reconciliation lets administrators define source precedence for CI attributes in CI Class Manager. When Discovery and an import both update the same attribute, the source with higher precedence wins. Ranking the Discovery source above the import source for the serial number attribute ensures Discovery's value is applied consistently, without custom scripts or import-specific workarounds.

Answer

A business rule on the CMDB CI table that blocks updates to the serial number field when the source is the import.

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A scheduled job that runs after discovery and copies the Discovery serial number into the CI, overwriting the import value.

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A transform map coalesce setting in the import set that matches on serial number and overwrites existing values.

Question 7

During a CMDB health check, an administrator notices that a Windows server CI has a stale record in the CMDB even though the server was decommissioned three months ago. The administrator wants to ensure that decommissioned CIs are automatically marked as retired. Which CMDB feature should be configured to achieve this?

Accepted Answer

CMDB Data Manager. CMDB Data Manager is designed to automate the lifecycle management of CIs, including retirement and deletion based on defined policies. By configuring a policy that targets CIs with a last discovered date older than a threshold, the administrator can ensure decommissioned CIs are retired automatically. This reduces manual effort and maintains CMDB accuracy.

Answer

CI Class Manager

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Discovery Schedules

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CMDB Health Dashboard

Question 8

You are designing a pattern to discover Windows servers. You need to collect the installed software list. The command output is a large text block with multiple lines, each containing a software name and version separated by a tab. Which parsing strategy in the Pattern Designer is best suited for this data?

Accepted Answer

Delimited Text. Delimited Text parsing is the most appropriate for tab-separated values. It splits each line into fields based on the delimiter, allowing straightforward extraction of software names and versions. Regular expressions, XML, and JSON are unnecessary or incorrect for this data format.

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JSON

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Regular Expression

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XML

Question 9

A MID Server is configured to connect to a ServiceNow instance using the MID Server user account. During a Discovery run, the MID Server fails to authenticate with the instance, and no discovery data is collected. Which action should be taken to resolve this?

Accepted Answer

Verify that the MID Server user has the 'mid_server' role and that the password is correct.. MID Server authentication to the instance relies on a user account with the 'mid_server' role and correct credentials. If authentication fails, the MID Server cannot retrieve or submit data. Verifying the user's role and password directly addresses the failure. Other options do not resolve authentication issues.

Answer

Restart the MID Server service to force re-authentication.

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Ensure the MID Server's capabilities include 'Discovery' and 'Orchestration'.

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Check the MID Server's IP range configuration to ensure it includes the instance's IP address.

Question 10

You are a ServiceNow Discovery administrator. You have been asked to ensure that the CMDB remains accurate and up-to-date when CIs are retired or decommissioned. Which two actions should you perform to maintain CMDB integrity in this scenario? (Choose two.)

Accepted Answer

Use the CMDB CI Lifecycle Management to transition the CI to a retired state.. The two correct actions are setting the CI's install status to 'Retired' and updating the retired date, and using the CMDB CI Lifecycle Management to transition the CI to a retired state. Both actions ensure that the CI is marked as no longer in use while preserving its data and relationships. Deleting the CI or running discovery on it are not appropriate, as they can cause data loss or errors. Creating a new CI does not address the retirement of the old one.

Answer

Create a new CI with the same name but a different serial number to represent the replacement.

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Run a discovery schedule to update the CI's attributes to reflect its decommissioned state.

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Delete the CI record from the CMDB to prevent it from appearing in reports.

Question 11

During a discovery run, a Windows server is correctly identified and classified, but the discovery administrator notices that the 'Serial number' attribute is not populated on the resulting CI. The administrator verifies that the Windows credentials are correct and that the server is reachable. Which component should the administrator investigate to ensure the serial number is collected?

Accepted Answer

The horizontal discovery pattern for Windows OS. Horizontal discovery patterns define the probes and sensors that collect specific attributes from devices. When an attribute like serial number is missing despite successful classification and credential validation, the pattern is the most likely culprit. The administrator should review the Windows OS pattern to ensure it includes the correct steps to retrieve the serial number, and update it if necessary.

Answer

The Discovery Schedule's 'Discover' field configuration

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The CMDB Identification and Reconciliation Engine (IRE) rules

Answer

The MID Server's 'mid.server.threads' property

Question 12

A discovery administrator is troubleshooting a server that was discovered but shows no installed software in the CMDB. The horizontal discovery status shows the device completed successfully and the classification matched the correct Linux Server class. Which configuration element should the administrator verify to ensure application and package data is collected for this device?

Accepted Answer

The Linux Server pattern's probes and pattern steps that collect package and application data.. Software and package data on Linux is gathered by dedicated probes and pattern steps inside the Linux Server pattern. Since classification succeeded, the pattern already ran far enough to identify the device; the missing software means the specific steps that enumerate packages and applications did not return usable data. Reviewing and correcting those probes and steps is the targeted fix for a completed discovery that lacks software records.

Answer

The CI Class's 'Discovery' related list of patterns.

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The Discovery Schedule's 'Max Run Time' value.

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The MID Server's 'Max Threads' parameter.

Question 13

A ServiceNow administrator is configuring a CI identification rule for a custom CI class 'Network Router'. The class has a unique attribute 'serial_number' and a non-unique attribute 'model'. The administrator wants to ensure that if a router with the same serial number already exists, Discovery updates that CI instead of creating a new one. Which identification rule configuration should be used?

Accepted Answer

Create a rule with 'serial_number' as the only identifier.. For CI identification, it is best practice to use the minimal set of attributes that uniquely identify a CI. Since serial_number is unique for network routers, it should be the only identifier. This ensures accurate matching and prevents duplicates, even if other attributes like model or name change.

Answer

Create a rule with 'serial_number' and 'name' as identifiers.

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Create a rule with 'model' as the only identifier.

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Create a rule with both 'serial_number' and 'model' as identifiers.

Question 14

You are designing a Discovery pattern for a network switch. You need to create a CI Relationship between the switch and its connected devices. In the Pattern Designer, which step type should you use to create this relationship?

Accepted Answer

Create Relation. To create a CI Relationship during Discovery, you must use the Create Relation step. This step allows you to define the relationship type and link the two CIs. Other steps like Create CI, Parse Variable, and Identification serve different purposes and cannot establish relationships.

Answer

Parse Variable

Answer

Create CI

Answer

Identification

Question 15

You are designing a pattern to discover Linux servers. You need to ensure that the pattern only runs the 'Identify' step if the server's hostname matches a specific naming convention (e.g., starts with 'prod-'). Which Pattern Designer feature should you use to implement this conditional logic?

Accepted Answer

Step condition. To conditionally execute a specific step, you must use a step condition. This allows you to define logic that evaluates pattern variables or other data to determine if the step should run. Preconditions apply to the whole pattern, while debug mode and Parse Variable serve different purposes.

Answer

Debug mode

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Pattern precondition

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Parse Variable