SNOW-CAD Practice Questions 2 — 50 Questions

Question 1

A customer reports that a scheduled data synchronization job takes longer than expected. The job queries the 'cmdb_ci' table and updates records based on an external source. The DBA suggests adding an index on the 'source' field. After adding the index, performance does not improve. What is the most likely reason?

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

Accepted Answer

The job uses a condition that filters on a different field.. The job uses a condition that filters on a different field is correct because adding an index on the 'source' field only improves performance if the query's WHERE clause filters on that field. If the job filters on another field, the index on 'source' is not used, and performance remains unchanged.

Answer

The index was not created correctly.

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The job runs during peak hours.

Answer

The database is replicated to a secondary site.

Question 2

A ServiceNow developer is integrating with an external system using a REST message. The external system requires a custom header 'X-API-Key' to be included in every request. Where should the developer configure this header to ensure it is automatically included in all REST messages that call this endpoint?

Accepted Answer

In the 'HTTP Headers' tab of the REST message definition. The 'HTTP Headers' tab in a REST message definition allows you to define custom headers that are automatically included in every request sent to that endpoint. This is the standard location for headers like 'X-API-Key' that must accompany all calls, as they are part of the HTTP request metadata, not query parameters or authentication credentials.

Answer

In the 'Query Parameters' tab of the REST message definition

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In the 'Authentication Profile' associated with the REST message

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In the Scripted REST API used to create the endpoint

Question 3

A developer is creating a business rule that runs before a query to modify the query condition. Which event should be specified?

Accepted Answer

'before query'. The correct event to modify query conditions before a query runs is 'before query'. This event fires before the database query is executed, allowing the developer to modify the query condition. Option A ('before insert') is for record insertion, not queries. Option B ('after query') fires after the query, so it is too late to modify conditions. Option C ('display') is related to form rendering, not queries.

Answer

'before insert'

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'after query'

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'display'

Question 4

A service catalog item has a variable set that includes a reference field to the 'cmdb_ci' table. The requirement is to show only 'Server' type CI's in the reference field. Which approach should be used?

Accepted Answer

Set a Reference Qualifier on the variable definition that uses the condition 'sys_class_name=Server'.. A Reference Qualifier on a variable definition allows you to filter the records displayed in a reference field using a condition string. By setting the condition 'sys_class_name=Server', only CI records with that specific sys_class_name will appear, which directly meets the requirement to show only 'Server' type CIs.

Answer

Create a UI Policy that sets the field as read-only and uses a condition to filter.

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Write a Client Script on load that sets the reference qualifier using setRefQual().

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Use a Data Policy to enforce a condition on the field.

Question 5

Drag and drop the steps to create a Client Script in ServiceNow into the correct order.

Accepted Answer

Navigate to Client Scripts, then click New, then set the Table and Name, then choose the UI Type and Trigger, then write the script, then submit.. The correct order: navigate, create new, set table and name, choose UI type and trigger, then write script and submit.

Answer

Navigate to Client Scripts, then click New, then choose the UI Type and Trigger, then set the Table and Name, then write the script, then submit.

Answer

Navigate to Client Scripts, then click New, then set the Table and Name, then write the script, then choose the UI Type and Trigger, then submit.

Answer

Navigate to Client Scripts, then set the Table and Name, then click New, then choose the UI Type and Trigger, then write the script, then submit.

Question 6

A service portal developer needs to create a spreadsheet-like view for bulk editing incident records directly in the portal. Which ServiceNow feature is designed for this purpose?

Accepted Answer

Use the 'Data Table' widget with the 'Inline Edit' option enabled.. The 'Data Table' widget in ServiceNow Service Portal is specifically designed to display records in a spreadsheet-like format with inline editing capabilities. Enabling the 'Inline Edit' option allows users to edit multiple records directly within the table, which matches the requirement for bulk editing.

Answer

Use the 'Form' widget with a multi-record template.

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Use the 'Report' widget with a drill-down option.

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Use a custom UI macro to display an HTML table with editable cells.

Question 7

Which THREE of the following are attributes of a Service Portal widget? (Choose three.)

Accepted Answer

Server Script. Server Script is a core attribute of a Service Portal widget because it runs on the server side when the widget is loaded or when a client-initiated action triggers a server call via the 'server.get' or 'server.update' options. It allows developers to query the database, perform business logic, and return data to the client controller, making it essential for data retrieval and processing within the widget lifecycle.

Answer

CSS Styling

Answer

Business Rule

Question 8

A developer is creating a custom table 'u_project_risk' to track risks associated with projects. The table must: (1) Automatically set the 'state' field to 'Open' when a new record is created. (2) Prevent deletion of records if the state is 'Closed'. (3) Display a warning message when a user changes the state from 'In Progress' to 'Closed'. Which THREE approaches should the developer use?

Accepted Answer

Set a default value for the 'state' field to 'Open'. Setting a default value on the 'state' field to 'Open' ensures that whenever a new record is created in the 'u_project_risk' table, the field automatically populates with 'Open' without requiring any script or business rule. This is a declarative, low-code approach that leverages the platform's built-in default value functionality at the field level, guaranteeing the requirement is met even if the record is created via web services or import sets.

Answer

Create a before business rule to check state on update

Answer

Define a reference qualifier on the 'project' field

Question 9

Which TWO statements are true about ServiceNow Business Rules? (Select TWO)

Accepted Answer

Business Rules can be set to run on 'before' or 'after' the database operation.. Option B is correct because ServiceNow Business Rules support 'before', 'after', 'async', and 'display' timing, and the 'before' and 'after' timings specifically execute relative to the database operation (before the record is saved to the database, or after it has been committed). Option E is correct because Business Rules can invoke email notifications, for example by calling gs.eventQueue() or GlideEmailOutbound within the script to send notifications as part of server-side logic. Option A is incorrect because Business Rules run on the server side, not the client side; client-side logic is handled by Client Scripts, UI Policies, and UI Actions. Option C is incorrect because Business Rules can be triggered on insert, update, delete, and query operations, not only updates. Option D is incorrect because Business Rules run synchronously by default; asynchronous execution requires explicitly setting the timing to 'async'.

Answer

Business Rules run on the client side.

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Business Rules can only be triggered by updates to a record.

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Business Rules are executed asynchronously by default.

Question 10

A company has a custom table 'u_asset' with a reference field 'u_location' pointing to 'cmn_location'. When a user changes the location on an asset record, the system must automatically update the location on all related 'u_asset_software' records. Which approach should the developer use?

Accepted Answer

Create a Business Rule that runs on update of the 'u_asset' table and updates related records.. A Business Rule that runs on the 'update' operation of the 'u_asset' table can directly query and update all related 'u_asset_software' records using GlideRecord. This server-side logic ensures the location change is propagated reliably, regardless of how the asset record is updated (UI, web service, import set, etc.), and it executes within the same database transaction for data consistency.

Answer

Create a Client Script that runs on load to update related records.

Answer

Create an ACL to automatically propagate changes.

Answer

Create a UI Policy that sets the location field on related records.

Question 11

A developer is customizing a form layout for the 'incident' table. They want to group related fields into titled sections for better usability. Which approach should they use?

Accepted Answer

Add fields to form sections via the Form Layout module. The Form Layout module (sys_ui_form / sys_ui_section) is the native ServiceNow tool for arranging fields into titled sections on a form. Designers use it to add, remove, and reposition fields and to create new sections with headers, which is exactly what the developer needs.

Answer

Create a UI Page and embed it in the form via an HTML field

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Use a catalog client script to rearrange fields dynamically

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Use a UI Policy to show/hide groups of fields

Question 12

A developer writes a Business Rule to calculate a total on an Aggregate field. The rule runs on 'insert' and 'update' on the parent table. However, the total is not updating correctly when child records are deleted. Why?

Accepted Answer

The Business Rule should be on the child table's delete event.. A Business Rule that runs on 'insert' and 'update' on the parent table will not fire when a child record is deleted, because the delete event occurs on the child table, not the parent. To correctly update an aggregate field on the parent when child records are deleted, the Business Rule must be defined on the child table's 'delete' event. This ensures the rule executes when the child record is removed, allowing the aggregate to be recalculated.

Answer

The Business Rule should use 'current' and 'previous' to detect deletion.

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The Business Rule should also run on 'delete'.

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The Business Rule should be a Global Business Rule.

Question 13

A company uses a custom application with a table 'incident_task' to track work on incidents. The requirement is to automatically reassign any incident_task that has not been updated in the last 7 days to a specific 'Escalation' group. A developer writes a Business Rule on the 'incident_task' table with the condition 'Current' table and runs on 'before query'. The script checks if (gs.daysAgo(current.sys_updated_on) >= 7) and then performs a current.assignment_group.setValue('escalation_group_sys_id'), followed by current.update(). After testing, the tasks are not being reassigned. What is the most likely cause of this issue?

Accepted Answer

Before query business rules cannot perform updates; they are read-only.. Before query business rules in ServiceNow are executed during the retrieval of records from the database, and they are strictly read-only. They cannot perform updates, inserts, or deletes because the database operation is not yet complete. Attempting to call current.update() within a before query business rule will be ignored or cause an error, which is why the reassignment never occurs.

Answer

The business rule should be changed to 'after' update.

Answer

The condition should use 'sys_updated_on' instead of 'sys_updated_on' (the same field).

Answer

The script uses current.update() which causes recursion.

Question 14

The above script runs in a business rule on the Incident table. What is a potential issue with this script?

Accepted Answer

It may cause an infinite loop if the same business rule triggers on update.. Updating incidents using gr.update() could trigger the same business rule again (if the rule runs on update), causing an infinite loop. Option A is incorrect because the while loop iterates all matching records, not just the first. Option C is incorrect because the API is not deprecated. Option D is incorrect because update() does commit changes.

Answer

It will only update the first matching record.

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It uses a deprecated API.

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It will not commit changes because update() is not used correctly.

Question 15

A developer is designing a REST message to send data from ServiceNow to an external system. The external system expects a new resource to be created at a specific endpoint. Which HTTP method should be used?

Accepted Answer

POST. The correct HTTP method is POST (option D). POST is used to create new resources on the server. Option A (PUT) is typically used to update or replace an existing resource, not create a new one at a specific endpoint. Option B (PATCH) is used for partial updates to an existing resource. Option C (GET) is used to retrieve data, not create new resources.

Answer

PUT

Answer

PATCH

Answer

GET

Question 16

Which TWO are common issues when troubleshooting a failed LDAP import?

Accepted Answer

LDAP filter syntax is invalid. Option A is correct because an invalid LDAP filter syntax (for example, a malformed search filter such as an unbalanced parenthesis or an unsupported operator) causes the LDAP server to reject the search request, which directly prevents the import from retrieving any entries. Option D is correct because an incorrectly specified Base DN means the search starts from a non-existent or wrong branch of the directory tree, so the import finds no matching objects even though the connection itself succeeds. OAuth is not a native LDAP authentication mechanism, so an expired OAuth token (B) is not a typical LDAP import failure. Attribute mapping mismatches (C) usually cause data to be written incorrectly or fields to be left empty rather than the import to fail outright, and an unreachable LDAP server (E) is a connectivity problem that typically surfaces as a connection error before the import logic runs, making it less specific to a failed import than filter or Base DN errors.

Answer

OAuth token for LDAP is expired

Answer

LDAP attribute mapping does not match target fields

Answer

LDAP server is unreachable

Question 17

In a multi-instance environment, an organization wants to integrate ServiceNow with an on-premise database using JDBC. Which feature is used to establish this connection?

Accepted Answer

External Data Sources. External Data Sources are specifically designed to connect ServiceNow to external databases via JDBC, enabling data synchronization.

Answer

REST API

Answer

Import Set

Answer

SOAP Web Service

Question 18

A developer is working on a catalog client script that references the 'caller_id' field on the 'sc_req_item' table. The caller_id field references the 'sys_user' table. To get the caller's email, which dot-walking syntax is correct?

Accepted Answer

current.caller_id.email. Dot-walking uses the reference field name followed by a dot and the target field. 'caller_id' references the sys_user table, so current.caller_id.email retrieves the caller's email. Option B is wrong because 'caller' is not a field on sc_req_item. Option C is wrong because parentheses are not used in dot-walking. Option D is wrong because you do not need to specify the table name; the reference is automatically followed.

Answer

current.caller.email

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current.caller_id(email)

Answer

current.caller_id.sys_user.email

Question 19

When creating a business rule in Studio, a developer wants the rule to run only when the state field changes from 'New' to 'Work in Progress'. Which condition should be used?

Accepted Answer

current.state.changesTo('Work in Progress'). ChangesTo('Work in Progress') triggers when the field changes to that specific value. Option A triggers on any change, B triggers when changing from a value, and D checks current and previous values incorrectly.

Answer

current.state.changesFrom('New')

Answer

current.state == 'New' && previous.state == 'Work in Progress'

Answer

current.state.changes()

Question 20

Which THREE of the following are correct statements about Service Portal client controllers?

Accepted Answer

They can use AngularJS services like $http and $timeout.. Option E is correct because Service Portal client controllers are indeed AngularJS controllers that execute in the browser to handle client-side logic for widgets. Option A is correct because these controllers run in the AngularJS environment and can inject and use built-in AngularJS services such as $http for AJAX calls and $timeout for deferred execution. Option D is correct because Service Portal provides a custom $scope.server object with get() and post() methods that client controllers use to invoke server-side scripts defined in the widget's server script. Option B is wrong because client controllers run on the client (browser), not the server, and are not invoked via server-side includes. Option C is wrong because the $scope variable is automatically provided by the framework to the controller function; it does not need to be explicitly defined by the developer.

Answer

They run on the server and are called via server-side includes.

Answer

They must define a $scope variable explicitly to bind data to the template.