SNOW-CAD Practice Exam 3 — 20 Questions

Question 1

A company has a Business Rule that runs after a record is updated. The rule needs to update a related record on a different table. However, the related record update is not being saved. What is the most likely cause?

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

Accepted Answer

The script is missing the .update() method on the GlideRecord object after setting field values.. In ServiceNow, when a Business Rule modifies a GlideRecord object (e.g., setting field values on a related record), the changes are not persisted to the database until the `.update()` method is explicitly called. Without `.update()`, the script runs without error but the modifications are lost, which is the most common cause of an update not being saved.

Answer

There is a script error that is being ignored because the Business Rule is set to 'true' for 'Run asynchronously'.

Answer

The Business Rule runs in a separate transaction and the update is rolled back.

Answer

The user running the script does not have write access to the related table.

Question 2

Which TWO statements are true about using ServiceNow Studio for application development?

Accepted Answer

Studio provides a guided interface to create application files such as tables, business rules, and client scripts.. ServiceNow Studio provides a guided, low-code interface that simplifies the creation of application artifacts such as tables, business rules, client scripts, UI policies, and more. It offers wizards and templates to help developers build components without needing to manually write all the underlying XML or JavaScript from scratch, making it ideal for rapid application development within the Now Platform.

Answer

Studio requires a separate HI (High-Impact) instance to develop applications.

Answer

When creating a new application in Studio, a new scope is automatically generated without user input.

Answer

Studio can only be used by users with the admin role.

Question 3

A company needs to automatically update the 'Assignment group' field on the Change Request table to 'Change Management' when the 'Category' field is set to 'Network'. Which type of business rule should be used?

Accepted Answer

Before business rule. A Before business rule (Option D) is correct because it runs before the record is saved to the database, allowing you to set the 'Assignment group' field value based on the 'Category' field before the insert or update operation completes. This ensures the assignment group is correctly populated in the same database transaction, avoiding the need for a separate update.

Answer

Display business rule

Answer

Async business rule

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After business rule

Question 4

A developer is working on an application in Studio and needs to create a new table that extends a base table. Which step is essential?

Accepted Answer

Use the 'Create Application File' wizard and select 'Table'.. In Studio, the recommended way to create a new table is using the 'Create Application File' wizard and selecting 'Table'. Options A and D are not Studio-specific methods, and C is not a standard creation approach.

Answer

Import the table from an update set.

Answer

Use the Database Views module.

Answer

Define the table schema manually via script.

Question 5

A ServiceNow administrator is building a new custom application to track employee training records. The application includes a custom table 'Training Record' with fields such as employee name, training course, completion date, and score. The administrator wants to create a user-friendly form for data entry. The form should display fields in a logical order: first employee details, then training details, then completion information. Additionally, the form should only show the 'score' field if the training type is 'Exam'. Which configuration approach best addresses these requirements?

Accepted Answer

Define multiple form sections to group related fields and use a UI policy to set the 'score' field visible only when training type is 'Exam'.. Defining multiple form sections groups related fields logically (employee details, training details, completion information), and a UI policy can dynamically set the 'score' field to visible only when the training type is 'Exam'. This approach uses declarative configuration rather than custom scripts, making it easier to maintain and less error-prone.

Answer

Design a single form view with all fields and use two client scripts (onLoad and onChange) to hide the score field when conditions are not met.

Answer

Create separate modules for each combination of fields (e.g., one for Exam training, one for others) to simplify data entry.

Answer

Create a single form view with all fields and instruct users to use the filter function to find the fields they need.

Question 6

Refer to the exhibit. A MID Server is failing to connect to an external Oracle database. The error log shows the above message. Which is the most likely cause?

Accepted Answer

The database instance name (service name) is incorrect in the configuration.. The error log in the exhibit (ORA-12514 or similar 'listener does not currently know of service requested') indicates the MID Server reached the listener but the service name it requested is not registered. This points to an incorrect database instance/service name in the MID Server's Oracle configuration, not a network or client issue.

Answer

The firewall is blocking port 1521.

Answer

The Oracle client is not installed.

Answer

The MID Server is not running.

Question 7

Which TWO of the following are types of UI Policies? (Choose two.)

Accepted Answer

On change. In ServiceNow, UI Policies come in two distinct types: 'on load' policies, which run when a form is first loaded and can set fields to mandatory, read-only, or hidden before the user interacts with the record, and 'on change' policies, which run when a specified field value changes and dynamically adjust other fields' mandatory, read-only, or visible state. Therefore options B (On load) and A (On change) are the two correct UI Policy types. The remaining options do not exist as UI Policy types: 'On submit' (C) is not a UI Policy type (client-side submission logic is handled by onSubmit client scripts or UI Policy actions, not a policy type), 'On delete' (D) is not a UI Policy type (record deletion is governed by business rules or ACLs), and 'On query' (E) is not a UI Policy type (query behavior is controlled by before-query business rules or ACL read restrictions).

Answer

On submit

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On delete

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On query

Question 8

Which THREE factors can negatively impact the performance of a ServiceNow form?

Accepted Answer

Large client script files (e.g., 100KB+).. Option A is correct because large client script files (e.g., 100KB+) must be downloaded and parsed by the browser on every form load, increasing page weight and JavaScript execution time, which directly degrades form rendering and responsiveness. Option B is correct because synchronous Ajax calls block the browser's main thread until the server responds, freezing the UI and preventing other scripts or user interactions from proceeding, which severely harms form performance. Option C is correct because each UI Policy adds client-side logic that must be evaluated on form load and on field changes, so a large number of UI Policies increases processing overhead and slows form responsiveness. Option D is not correct because tabs/sections are primarily a layout construct; while excessive tabs can affect usability, they are not a primary technical driver of form performance degradation in the same way scripts and policies are. Option E is not correct because AngularJS directives are not a standard ServiceNow form performance concern; ServiceNow forms are not built on AngularJS directives, so their use is not a recognized factor negatively impacting form performance.

Answer

Many tabs (sections) on the form.

Answer

Use of AngularJS directives in the form.

Question 9

Which THREE conditions must be met for a user to successfully see a record in a ServiceNow list view?

Accepted Answer

The user has read permission on the table via an ACL.. ServiceNow uses Access Control Lists (ACLs) to enforce read permissions on tables. Without a read ACL that evaluates to true for the user, the system will not display any records from that table in a list view, regardless of other conditions.

Answer

The user has write permission on the table.

Answer

The user has configured a personalized list view for the table.

Question 10

The ACL is meant to allow users to read an incident only if they are the manager of the assigned user. However, users who are not managers can also read the incident. What is the flaw?

Accepted Answer

The script should include an else statement that sets answer = false. When an ACL condition script runs, it must explicitly set the answer variable to true or false. If the script lacks an else statement that sets answer = false, the script returns undefined (or the last evaluated expression) for non-matching conditions, which ServiceNow treats as true, inadvertently granting read access to unauthorized users. Adding an else statement that sets answer = false ensures that only users who satisfy the manager condition are granted read access.

Answer

The operation should be 'write' not 'read'

Answer

The table should be 'sys_user'

Answer

The condition in the ACL condition field should be removed and replaced with the script

Question 11

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?

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.

Answer

The job runs during peak hours.

Answer

The database is replicated to a secondary site.

Question 12

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

Answer

In the 'Authentication Profile' associated with the REST message

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In the Scripted REST API used to create the endpoint

Question 13

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'

Answer

'after query'

Answer

'display'

Question 14

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.

Answer

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

Answer

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

Question 15

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 16

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.

Answer

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

Answer

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

Question 17

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 18

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 19

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.

Answer

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

Answer

Business Rules are executed asynchronously by default.

Question 20

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.