SERVICENOW-CIS-DISCOVERY Discovery Pattern Design — 25 Questions

Question 1

You need to add a new CI type to an existing horizontal pattern. Which step must be performed in the Pattern Designer to ensure the CI is linked to the parent process?

Accepted Answer

Use the 'Related CI' step within the Identification section.. To link a CI to a parent process in a pattern, you must define the relation in the Identification section using the 'Related CI' step.

Answer

Add a new CI entry in the 'Identification Rules' table.

Answer

Modify the 'Discovery CI Identification' business rule.

Answer

Create a new pattern definition record in the CMDB.

Question 2

Which THREE of the following are valid ways to identify a CI in a pattern?

Accepted Answer

Using CI Identification Rules. Option A (Using CI Identification Rules) is correct because ServiceNow's Identification and Reconciliation Engine (IRE) relies on CI Identification Rules to determine whether an incoming CI payload matches an existing CI or should create a new one, making it the primary, supported mechanism for identifying CIs in a pattern. Option C (Matching on Serial Number) is correct because a serial number is a common, unique identifier attribute that patterns use as an identifier entry within an identification rule to match incoming data to an existing CI record. Option E (Using a temporary variable) is correct because patterns can use temporary variables to hold and pass values (such as a sys_id or identifier value) during pattern execution so that CI identification logic can reference them dynamically. Option B (Using a manual tag) is not a valid identification mechanism in patterns, since tags are metadata used for grouping and filtering, not for matching incoming CI data to existing records. Option D (Hard-coding the sys_id) is not valid because a sys_id is instance-specific and generated at record creation, so hard-coding it would not reliably identify CIs across imports or instances and is not a supported identification approach.

Answer

Using a manual tag

Answer

Hard-coding the sys_id

Question 3

In the Pattern Designer, you need to set a CI attribute only if a specific command output returns a value. Which operation type should be used to define this conditional logic?

Accepted Answer

Set Parameter Value. The 'Set Parameter Value' operation in conjunction with 'Condition' blocks allows for conditional assignment based on previous step results.

Answer

Identification

Answer

Parse

Answer

Table Operation

Question 4

In the Pattern Designer, what is the primary purpose of the 'Connection' section?

Accepted Answer

To establish relationships between the current CI and other CIs.. The connection section establishes the links and relationships between discovered CIs.

Answer

To parse command output.

Answer

To define the attributes of the CI.

Answer

To validate credentials.

Question 5

In a horizontal pattern, you have an Identification section that fails to match a CI. What is the most likely cause if the 'Identification' step has correct attributes?

Accepted Answer

The Identification rule does not support the CI class.. In a horizontal pattern, the Identification section is responsible for matching discovered data to existing CIs. If the section's attributes are correct but no match occurs, the most likely cause is that the Identification rule (or the pattern's identification logic) does not support the CI class being discovered. ServiceNow patterns must explicitly declare which CI classes they can identify; if the class isn't supported, the identification step silently fails even with valid attributes.

Answer

The pattern contains syntax errors.

Answer

The Discovery credentials are invalid.

Answer

The pattern is not published.

Answer

The MID Server is down.

Question 6

When designing a pattern to identify a custom application, which section is responsible for populating the CI attributes?

Accepted Answer

Identification section. The Identification section is specifically designed for matching and attribute population.

Answer

Pre-pattern execution

Answer

Extension section

Answer

Connection section

Question 7

Which of the following describes the function of the 'Discovery' section in a pattern?

Accepted Answer

It executes commands to gather data from the target.. The Discovery section in a ServiceNow horizontal discovery pattern is the operational core that executes the actual probes and commands against the target device to gather data. It contains the steps (WMI queries, SSH commands, SNMP OIDs, PowerShell scripts, etc.) that collect raw information from the target. The other sections handle connection setup, CI creation, and attribute mapping, but only Discovery performs the data-gathering execution.

Answer

It defines the connection to the target.

Answer

It creates the CI record.

Answer

It maps attributes to the CMDB.

Question 8

If a pattern step is configured to use a 'Variable' as an input, but that variable was never defined, what is the result?

Accepted Answer

The pattern fails the step with an 'Undefined Variable' error.. The pattern will throw an execution error because the reference is missing.

Answer

The pattern ignores the step.

Answer

The variable defaults to empty.

Answer

The system creates a default variable.

Question 9

Which of the following is true about 'Identification Sections'?

Accepted Answer

They must be the first section in the pattern.. Identification Sections must be the first section in a horizontal discovery pattern. This is a structural requirement because identification must occur before any other steps (like exploration or collection) can run; the pattern needs to know which CI it's working with before it can gather additional data. Placing an Identification section anywhere else would break the pattern's execution flow.

Answer

They are optional.

Answer

They don't support regex.

Answer

They can only be used once per pattern.

Question 10

Which TWO of the following are valid ways to pass data between pattern sections?

Accepted Answer

Pattern parameters. Option D (Pattern parameters) is correct because pattern parameters are explicitly designed as inputs/outputs that carry values into and out of pattern sections, allowing one section to pass data to another during pattern execution. Option E (Defined variables) is correct because variables defined within a pattern (for example, via a Set Variable or similar step) can be referenced by later sections, making them a valid mechanism for passing data between sections. Option A (Discovery Logs) is not a data-passing mechanism between sections; logs are diagnostic output, not structured data channels. Option B (CMDB Tables) is not used to pass data between pattern sections; CMDB tables are persistent configuration records, not in-pattern data transport. Option C (System Properties) is not a valid way to pass data between pattern sections; system properties are global instance-level settings, not section-to-section data carriers.

Answer

Discovery Logs

Answer

CMDB Tables

Answer

System Properties

Question 11

Which THREE things must be true for a pattern to successfully populate an attribute?

Accepted Answer

The target attribute must exist on the CI class. The data must be captured, mapped, and the target CI must be valid.

Answer

The pattern must be running as administrator

Answer

The pattern must be in English

Question 12

Which THREE actions occur when a pattern is published?

Accepted Answer

The pattern moves from 'Draft' to 'Active'. When a pattern is published, its lifecycle state transitions from 'Draft' to 'Active' (A), making it a usable, production-ready pattern rather than a work-in-progress. Publishing also makes the pattern available to discovery schedules (D), so Discovery can select and execute it during horizontal and vertical discovery probes. In addition, publishing saves the pattern as a new version (E), creating a version record that supports rollback and change tracking. The MID server is not restarted (B) by publishing a pattern, since patterns are configuration artifacts executed by the MID server without requiring a service restart. The pattern is not deleted (C); publishing preserves the pattern and its versions rather than removing it.

Answer

The MID server is restarted

Answer

The pattern is deleted

Question 13

Which THREE parsing methods are available in the 'Parse' step?

Accepted Answer

JSON. In the Parse step, JSON (A) is a valid parsing method because it lets you extract fields from structured JSON payloads using key paths. XML (B) is also valid, as the step can parse XML documents and reference elements/attributes via XPath-style expressions. Regex (D) is valid because regular expressions allow extracting substrings from unstructured text when no structured format applies. JavaScript (C) is not a parsing method offered by the Parse step; it is a scripting language used in separate script/function steps. SQL (E) is a database query language, not a parser option in this step.

Answer

JavaScript

Answer

SQL

Question 14

Which THREE options are available when creating a 'New Step'?

Accepted Answer

Parse. In this platform's 'New Step' creation dialog, the available step types include Parse (B), Lookup (C), and Command (E). Parse (B) is correct because a step can be configured to parse incoming data (for example, extracting fields from a text or JSON payload) as part of a workflow. Lookup (C) is correct because a step can perform a lookup against an external source or reference table to retrieve a value during execution. Command (E) is correct because a step can execute a command (such as running a script or shell command) as an action within the workflow. Database Update (A) and Report (D) are not among the selectable step types in the 'New Step' list, so they do not belong.

Answer

Database Update

Answer

Report

Question 15

Which TWO of the following are valid CI relationship types that can be created in a pattern?

Accepted Answer

Runs on. In ServiceNow CI relationship patterns, the valid relationship types that can be created include 'Runs on' (A), which defines that a CI is hosted or executed on another CI such as an application running on a server, and 'Depends on' (B), which defines a dependency where one CI relies on another for operation, such as a database depending on a server. These are standard CMDB relationship types supported in pattern-based discovery and service mapping. The other options—'Owned by' (C), 'Created by' (D), and 'Updated by' (E)—are not CI relationship types used in patterns; they describe ownership or audit metadata rather than functional CI-to-CI dependencies.

Answer

Owned by

Answer

Created by

Answer

Updated by

Question 16

Which TWO scenarios indicate that an identification rule is misconfigured?

Accepted Answer

The system creates duplicate CIs for the same asset. Option B is correct because a misconfigured identification rule fails to match incoming discovery data to an existing CI, so the system cannot recognize the asset as the same one and instead inserts a new record, producing duplicate CIs for the same asset. Option E is correct because when no identification rule matches the discovered data, the identification engine returns the error 'No identification rule' and the discovery/identification process fails, directly signaling a rule configuration problem. Option A is not correct because slow pattern execution is a performance issue in the pattern/probe logic, not an identification rule misconfiguration. Option C is not correct because a full CMDB is a capacity/storage condition unrelated to how identification rules are configured. Option D is not correct because a stopped MID server service is a connectivity/agent failure that prevents discovery from running at all, not a misconfigured identification rule.

Answer

The pattern takes too long to run

Answer

The CMDB is full

Answer

The MID server service is stopped

Question 17

When parsing a configuration file using the 'Text' parser, which configuration setting is required to define how the parser should handle multi-line blocks where key-value pairs are separated by colons?

Accepted Answer

Line Delimiter. The 'Text' parser in ServiceNow Discovery is designed to parse flat files where each line typically contains a single key-value pair. When dealing with multi-line blocks where key-value pairs are separated by colons, the parser needs to know how to distinguish between separate entries. The 'Line Delimiter' setting defines the character or string that marks the end of a line or entry. In this context, a colon (:) is used as the delimiter to separate keys from values, but the parser also needs to know how lines are terminated (e.g., newline) to correctly group multi-line blocks. However, the question specifically asks about handling multi-line blocks where key-value pairs are separated by colons. The correct answer is 'Line Delimiter' because it tells the parser how to split the file into lines or records. Without the correct delimiter, the parser cannot correctly identify where one key-value pair ends and another begins, especially in multi-line scenarios. Thus, 'Line Delimiter' is the required configuration setting.

Answer

JSON Path

Answer

Regex Pattern

Answer

Variable Mapping

Question 18

You have a PowerShell script step in your pattern that returns multiple key-value pairs separated by commas. What is the most efficient way to convert this output into a table format for further processing in the pattern?

Accepted Answer

Use the Parse Delimited Text step. The Parse Delimited Text step is the most efficient way to convert comma-separated key-value pairs into a table format. This step is specifically designed to parse delimited text and output a table that can be used in subsequent pattern steps.

Answer

Use a series of Set Variable steps

Answer

Use a Regex extraction step

Answer

Use the Table Transformation step

Question 19

When configuring a connection in a pattern, which attribute is used to define the entry point, such as an IP address or URL?

Accepted Answer

Connection Definition. The 'Connection' section of a pattern is where you define the entry points (host, port, URL) that the pattern will connect to.

Answer

Identification Rule

Answer

Discovery Schedule

Answer

Target Identification

Question 20

Which THREE actions must be taken when debugging a pattern that is not correctly populating a CI attribute in the CMDB?

Accepted Answer

Review the IRE payload in the Discovery Log to ensure the data is being sent to the CMDB. Debugging requires verifying that the pattern logic runs, the data is correctly mapped, and the IRE rules allow the update.

Answer

Restart the MID Server service to clear cache

Answer

Rebuild the CI class from scratch