SNOW-CAD Practice Test 22 — 15 Questions

Question 1

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

Accepted Answer

Large client script files (e.g., 100KB+).. Options A, B, and C are correct. Multiple UI Policies increase server load and client-side processing. Synchronous Ajax calls block the UI until they complete. Large client script files increase download time and parsing. Option D is wrong because the number of tabs does not significantly impact performance. Option E is wrong because AngularJS directives, when used properly, are not a performance issue.

Answer

Many tabs (sections) on the form.

Answer

Use of AngularJS directives in the form.

Question 2

Which TWO factors are most important when designing a dashboard for executives to monitor key performance indicators? (Choose two.)

Accepted Answer

Real-time data accessibility. Executives need summarized, high-level data that is current and presented clearly. Real-time data accessibility and visual clarity are top priorities.

Answer

Including all available metrics

Answer

Using complex filter conditions

Answer

Detailed transactional data

Question 3

A form has a field 'Department' that, when changed, should make 'Manager' mandatory. The current implementation uses a client script that updates the field attribute on change. However, the mandatory behavior only works when the user first loads the form, but not when changing the field. What is the most likely cause?

Accepted Answer

A UI Policy with same condition is overriding the client script.. The script should use a UI Policy instead, as client scripts for such actions require proper event bindings and are less reliable.

Answer

The client script is not triggered because the field change event is not handled.

Answer

The script uses g_form.setMandatory() which only works on initial load, not on change.

Answer

The field is referenced by the wrong name.

Question 4

Which two of the following are best practices when writing Script Includes in ServiceNow? (Choose two.)

Accepted Answer

Avoid using GlideRecord queries inside loops to prevent performance issues.. Running GlideRecord queries inside loops (e.g., for or while) causes multiple database round-trips, which severely degrades performance, especially with large datasets. Instead, you should use GlideRecord's query() once and iterate over the result set, or use GlideAggregate for aggregated calculations to minimize database calls.

Answer

Keep the script source code under 10 KB to improve performance.

Answer

Wrap all code in try-catch blocks to handle errors gracefully.

Answer

Use gs.addInfoMessage() to output debug information while developing.

Question 5

A scoped application includes a script include that is intended to be used by a business rule in the global scope. The script include is marked as 'Client callable: false' and 'Accessible from: This application only'. The business rule cannot call the script include. Which change fixes this?

Accepted Answer

Change 'Accessible from' to 'All application scopes'. The business rule in the global scope cannot access a script include restricted to 'This application only'. Changing 'Accessible from' to 'All application scopes' allows the global-scope business rule to invoke the script include, as cross-scope access is controlled by this property. The 'Client callable' setting is irrelevant for server-side business rules.

Answer

Set the script include name to start with 'global_'

Answer

Move the script include to the global scope

Answer

Set 'Client callable' to true

Question 6

Which TWO accessibility considerations are essential when designing for Service Portal? (Choose two.)

Accepted Answer

Proper heading structure. Proper heading structure and keyboard navigation are essential for accessibility. Color alone should not convey information, and auto-play videos can be a barrier. Complex data tables can be made accessible but require proper markup.

Answer

Use of color alone for important information

Answer

Complex data tables without headers

Answer

Auto-play videos

Question 7

A knowledge base article template needs a new custom field for 'Article Version'. The administrator wants to add this field to the template so it appears on all articles using that template. What is the correct approach?

Accepted Answer

Modify the existing template to include the new field.. Knowledge base templates define the fields that appear on articles. Adding the field to the template ensures it appears on all articles using that template.

Answer

Create a new template with the field and re-assign all articles.

Answer

Use a UI Policy to show the field on articles using that template.

Answer

Add the field globally to the Knowledge base application file.

Question 8

A developer has created a Business Rule that runs on the 'After' order of the incident table. The Business Rule modifies several fields on the incident record. After testing, the developer notices that the changes are not being saved to the database. What is the most likely cause?

Accepted Answer

The Business Rule does not include a call to current.update() after making field changes.. In ServiceNow, a Business Rule set to run 'After' the database operation does not automatically save field changes to the database. The developer must explicitly call `current.update()` to persist the modifications. Without this call, the changes exist only in memory during the script execution and are discarded after the rule completes. Option D is incorrect because the rule is specifically set to run 'After' as stated in the stem; if it were 'Before', changes would be saved automatically without needing `current.update()`. Options A and C are possible but less likely; the most common cause is the missing `current.update()` call.

Answer

The Business Rule is disabled for the current user's role.

Answer

The fields being modified are read-only due to a data policy.

Answer

The Business Rule is set to run on 'Before' instead of 'After'.

Question 9

Which TWO conditions must be met for a Scoped Application to access a table from another scope without using an access grant?

Accepted Answer

The table belongs to the global scope. Tables in the global scope are accessible by default to all scoped applications without requiring an explicit access grant. This is a fundamental rule in ServiceNow's scoping model: global-scope tables are considered shared resources, so any scoped application can read from or write to them as long as the application is installed in the same instance. Option E is also correct because marking a table as 'Allow access to all application scopes' in its application file explicitly overrides the default scope isolation, granting cross-scope access without a grant.

Answer

The application is installed in the same instance as the table

Answer

The table is extended from a table in the consumer application scope

Answer

The table name starts with 'sys_'

Question 10

Which method is recommended for applying custom CSS to a Service Portal page?

Accepted Answer

Use the CSS Variable Editor in UI Builder. The CSS Variable Editor (or Theme and Branding) is the standard way to customize CSS in Service Portal. Customizing Bootstrap directly is not recommended.

Answer

Modify the Bootstrap CSS file directly

Answer

Add inline styles in the page template

Answer

Override CSS in each widget's instance options

Question 11

A dashboard with multiple indicators is loading slowly. The dashboard contains live data from several tables with complex conditions. Which optimization should be applied first?

Accepted Answer

Convert indicators to use aggregated data sources instead of live queries.. Using aggregate indicators reduces the number of live queries by pre-calculating data, which is the most effective optimization for dashboard performance.

Answer

Use client-side scripts to load data asynchronously.

Answer

Reduce the number of indicators to one.

Answer

Increase the cache timeout for all indicators.

Question 12

When designing a custom portal page, the developer notices that the page layout breaks on mobile devices. What is the most efficient approach to ensure responsiveness?

Accepted Answer

Implement Bootstrap grid classes. Service Portal uses Bootstrap for responsive design. Implementing Bootstrap grid classes is the standard and efficient method. Option A is not responsive. Option C is more work and less efficient. Option D would work but does not leverage the built-in framework.

Answer

Add a media query for each device

Answer

Use fixed pixel widths

Answer

Use a single-column layout

Question 13

A company uses an import set to bring in hardware asset data from an external inventory system. The staging table 'u_hardware_staging' maps fields to the 'alm_hardware' table via a transform map. Recently, the import set started failing with the error 'Invalid reference field value: 'PO123' for field 'purchase_order''. The 'purchase_order' field on 'alm_hardware' is a reference to the 'purchase_order' table, and the staging field contains the purchase order number (e.g., 'PO123'). The transform map has a field map that uses the 'Find' and 'Map' functionality to match the purchase order number. The 'purchase_order' table uses the 'number' field as the display value. Which change should the administrator make to fix the error?

Accepted Answer

In the transform map, enable 'Find map for each record' and set the match field to 'number' on the purchase_order table. The transform map needs to find the purchase order record by its 'number' field (display value). Enabling 'Find map for each record' and setting the match field to 'number' on the purchase_order table allows the transform to resolve the reference. Option B is incorrect because the staging table should contain the number, not the sys_id, as the import source provides readable values. Option C is incorrect because using 'Direct' would attempt to set the reference field with the number string, which is invalid. Option D is incorrect because database views do not apply to transform mappings.

Answer

Modify the staging table to include the sys_id of the purchase order instead of the number

Answer

Change the field map to use 'Direct' instead of 'Find' and 'Map'

Answer

Create a database view between the staging table and the purchase_order table to auto-populate the reference

Question 14

A company wants to customize the theme of their ServiceNow instance to match corporate branding, including colors and fonts. Which method is the most maintainable and upgrade-safe?

Accepted Answer

Use the 'Application' > 'Global CSS and Theme' module to define overrides.. Using the Global CSS and Theme system allows customizations in a dedicated module that survives upgrades, unlike direct modifications of system CSS.

Answer

Modify the system CSS files directly via the UI.

Answer

Override CSS in a custom stylesheet and include it in the page using a UI Macro.

Answer

Inject custom CSS using a UI Script.

Question 15

Refer to the exhibit. A UI Policy is configured to run 'On Condition' with the condition 'Urgent is true'. Users report that when they check the 'Urgent' checkbox, the 'Reason' field does not become mandatory. What is the most likely cause?

Accepted Answer

The script uses getValue('urgent') but the field name is 'u_urgent'.. The script uses getValue('urgent') but the actual field name is 'u_urgent' as per the condition (UI Policy condition uses 'Urgent' which maps to 'u_urgent' in the database). The mismatch causes the script to not trigger properly.

Answer

The UI Policy should be set to 'On Load' only.

Answer

The condition should be set to 'Urgent is false'.

Answer

The script should use g_form.setValue instead of setMandatory.