SNOW-CAD Practice Test 28 — 15 Questions

Question 1

An administrator notices that a scheduled job, 'Update Asset Status', fails every night with a 'Script timeout' error. The job updates a large number of records in the Asset table. Which approach should the administrator take to resolve the timeout issue?

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

Accepted Answer

Rewrite the job to use GlideAggregate with query and update in bulk. The script timeout error indicates that the scheduled job is taking too long to process individual record updates. Rewriting the job to use GlideAggregate with bulk update operations reduces the number of database round-trips and processes records in batches, which is the standard approach for handling large data sets in ServiceNow without hitting script timeout limits.

Answer

Add a business rule to run asynchronously for each update

Answer

Increase the timeout value in the scheduled job configuration

Answer

Split the job into multiple smaller jobs running sequentially

Question 2

A developer notices that a custom table 'u_project' is not appearing in the 'Create New' menu even though the application scope is set correctly. The table has been created with the 'Create without application' flag unchecked. What is the most likely cause?

Accepted Answer

The 'Create new record' property is set to false.. The 'Extensible' property controls whether other tables can extend this table, not the menu. Option B is correct because the table property 'Create new record' must be enabled for the table to appear in the 'Create New' menu. Option C is incorrect because the 'Allow Configuration' property affects dictionary attributes, not the new record menu. Option D is incorrect because role-based access uses ACLs, but the menu visibility is controlled by the 'Create new record' property.

Answer

The 'Extensible' property is set to false.

Answer

The 'Allow Configuration' property is set to false.

Answer

The table's roles are not assigned to the developer.

Question 3

Which method should be used to delete all records in the 'incident' table where the state is 'Closed' and the sys_updated_on is older than 90 days?

Accepted Answer

GlideRecord.deleteMultiple(). GlideRecord.deleteMultiple() is the appropriate method to delete multiple records that match a specified query, such as all incidents in 'Closed' state updated over 90 days ago. Option B is incorrect because GlideAggregate is used for aggregation (e.g., counting, summing) and does not have a deleteMultiple() method. Option C is incorrect because GlideRecord.deleteRecord() only deletes the current single record (the one loaded into the GlideRecord object). Option D is incorrect because GlideRecord.setDelete(true) is not a valid method; deletion is performed via deleteRecord() or deleteMultiple().

Answer

GlideAggregate.deleteMultiple()

Answer

GlideRecord.deleteRecord()

Answer

GlideRecord.setDelete(true)

Question 4

Refer to the exhibit. What does this script do?

Accepted Answer

Updates the state of incident INC001234 to 2.. The script retrieves the incident with number 'INC001234' using `get('number', 'INC001234')`, which returns a GlideRecord object. The `get` method returns true if the record exists and loads it into memory. Setting `state` to 2 (which corresponds to 'In Progress' or a similar value) modifies the record, and `update()` commits the change to the database. Option A is incorrect because `get` returns true if the record is found, so it does do something. Option C would require using `insert()` after setting values, but not `get`. Option D would require `deleteRecord()`, not `update()`.

Answer

Does nothing because get returns false.

Answer

Creates a new incident.

Answer

Deletes the incident.

Question 5

A developer is troubleshooting a Service Portal widget that loads slowly. The widget uses a server script that queries a large table without any filters. Which design change would most improve performance?

Accepted Answer

Add a filter condition in the GlideRecord query. Adding a filter condition to the GlideRecord query reduces the dataset retrieved from the database, minimizing network transfer and server-side processing time. Without filters, the query returns all rows from a large table, causing excessive load on the instance and slow widget rendering. Filtering at the database level is the most efficient way to improve performance in Service Portal widgets.

Answer

Add client-side caching using $scope

Answer

Load the widget using ng-if instead of ng-show

Answer

Create a custom table with only required fields

Question 6

A ServiceNow instance is configured to use LDAP for user authentication and role membership. After a recent LDAP schema change, users can authenticate but some users are missing their assigned roles. The LDAP server is returning all attributes correctly. What is the most likely cause of this issue?

Accepted Answer

The 'LDAP Group DN' format in the LDAP server configuration does not match the new schema. The LDAP Group DN format defines how ServiceNow maps LDAP groups to roles. After a schema change, if the DN structure for groups has been altered (e.g., OU names changed), the stored format in the LDAP server configuration will no longer match, causing role membership to fail even though user authentication (which uses a separate base DN and filter) still works. The LDAP server returning all attributes correctly confirms the issue is in the mapping configuration, not in data retrieval.

Answer

The LDAP server's base DN for user search has changed

Answer

The 'Use secure connection' checkbox is unchecked in the LDAP configuration

Answer

The LDAP server is not returning the 'memberOf' attribute for users

Question 7

A company wants to hide a field on a catalog item form when a specific variable is selected. What is the most appropriate way to achieve this?

Accepted Answer

Create a UI Policy that hides the field when the condition is met.. UI Policies are the standard declarative way to control field visibility, read-only, and mandatory states on ServiceNow catalog item forms based on conditions. Option B is incorrect because modifying the form layout only changes the initial arrangement and does not dynamically hide fields. Option C is incorrect because a catalog client script can be used but is less standard and efficient than a UI Policy for visibility control. Option D is incorrect because a client script setting the display property is not the recommended approach; UI Policy is specifically designed for such conditional logic.

Answer

Modify the form layout to remove the field.

Answer

Use a catalog client script to hide the field.

Answer

Write a client script to set the field's display property to false on load.

Question 8

Which of the following is the best practice for referencing a field value in a client script on a ServiceNow form?

Accepted Answer

Using g_form.getValue('field_name'). The correct answer because g_form.getValue('field_name') is the standard client-side API to retrieve the value of a field on a ServiceNow form. Option A is incorrect because g_l.get() is used for GlideAjax calls, not for direct field access. Option B is incorrect because g_form.getValue() does not take a DOM element as an argument; it expects a field name string. Option D is incorrect because GlideRecord.get() is a server-side method and cannot be used directly in a client script.

Answer

Using g_l.get('field_name')

Answer

Using g_form.getValue(document.getElementById('field_name'))

Answer

Using GlideRecord.get() to query the field value

Question 9

A developer is asked to add a custom button to the Service Portal form for the 'incident' table. The button should trigger a client script that displays a confirmation dialog before submitting the form. Which approach should the developer use?

Accepted Answer

Create a UI Action on the incident table with a client script and set the 'Show insert' condition.. UI Actions in Service Portal are the standard mechanism for adding custom buttons to forms. By creating a UI Action on the incident table with a client script, the developer can add a button that triggers a confirmation dialog before form submission. UI Policies only control field attributes (e.g., visibility, mandatory) and cannot create new UI elements like buttons.

Answer

Create a UI Policy on the incident table with a client script that shows the button conditionally.

Answer

Create an Access Control Rule (ACL) on the incident table and attach a client script.

Answer

Create a Business Rule on the incident table that injects a button via server-side code.

Question 10

A user needs to generate a report that shows the count of incidents by category for the current month. Which table and field combination should be used in a report?

Accepted Answer

Use the 'incident' table with 'category' and 'sys_created_on'.. The incident table contains incident records, and the category field allows grouping incidents by category, while sys_created_on can be used to filter incidents created in the current month. Option A is incorrect because the cmdb_ci table is for configuration items, not incidents. Option B is incorrect because the task table includes multiple task types (incidents, problems, changes), so it's not specific to incidents. Option C is incorrect because the sys_user table stores user information, not incidents.

Answer

Use the 'cmdb_ci' table with 'install_status' and 'sys_created_on'.

Answer

Use the 'task' table with 'priority' and 'sys_updated_on'.

Answer

Use the 'sys_user' table with 'department' and 'sys_created_on'.

Question 11

A Service Portal widget is failing to update a reference field on a form after a user selects a value from a reference picker. The developer reviews the widget's client controller and sees the following code snippet: $scope.c.data.selectedItem = value; The server script expects 'selectedItem' to be a sys_id string, but it is receiving an object. What is the most likely cause?

Accepted Answer

The reference field returns an object with 'value' and 'display' properties; the code should extract the sys_id.. When a reference picker returns a value in Service Portal, it typically provides an object containing both the display value and the sys_id (e.g., {value: 'sys_id', display: 'name'}). The client controller code assigns this entire object to $scope.c.data.selectedItem, but the server script expects a plain sys_id string. The developer must extract the sys_id property (e.g., value.sys_id or value.value) before assigning it to the scope variable.

Answer

The server script expects the parameter in a different scope variable, like $scope.c.data.item.

Answer

The $scope.c.data assignment is incorrect; it should be $scope.data.

Answer

The client controller is not allowed to set $scope.c variables.

Question 12

A large enterprise uses ServiceNow for IT service management. The instance has a custom table 'u_asset_tracker' with over 2 million records. The table is referenced by multiple other tables. Recently, users have reported that when they open a record in the 'u_asset_tracker' table, the form takes 15-20 seconds to load. Additionally, reports that query this table often time out. The instance is running on a mid-range server with 8GB RAM. The admin suspects database performance issues. Upon reviewing the sys_properties, the admin finds that 'glide.ui.auto_clear_filters' is set to false. Also, there are several business rules on the table that run on 'before' query and 'after' query. A script include that transforms data from 'u_asset_tracker' to another table is running frequently. The admin needs to improve performance. Which course of action should the admin take first?

Accepted Answer

Review and disable unnecessary 'before query' and 'after query' business rules on the table.. Disabling unnecessary 'before query' and 'after query' business rules reduces the overhead on every query, which can significantly improve load times for large tables like 'u_asset_tracker'. Option A is incorrect because replacing GlideRecord with GlideAggregate is not a general performance fix; GlideAggregate is designed for aggregate calculations (e.g., count, sum) and cannot replace standard record retrieval. Option B is incorrect because disabling the script include may break data transformation functionality and is not a targeted performance improvement. Option D is incorrect because increasing server RAM may help in some cases, but it does not address the root cause of excessive business rule execution on queries.

Answer

Replace all GlideRecord queries with GlideAggregate for reports.

Answer

Disable the script include that transforms data to reduce load.

Answer

Increase the server RAM to 16GB to handle the load.

Question 13

A developer is building a REST API endpoint in ServiceNow to return data from the 'incident' table. The API should only return incidents assigned to the caller. Which method should be used to filter the records based on the caller's user ID?

Accepted Answer

Use the 'sysparm_query' parameter with an encoded query.. The 'sysparm_query' parameter allows you to pass an encoded query string to filter records in a REST API endpoint. By specifying a query like 'assigned_to=javascript:gs.getUserID()' or using the caller's sys_id directly, you can restrict the incident records returned to only those assigned to the caller. This is the standard method for applying dynamic filters in ServiceNow REST API calls.

Answer

Use the 'sysparm_display_value' parameter.

Answer

Use the 'sysparm_limit' parameter to limit results.

Answer

Use the 'sysparm_fields' parameter to specify fields.

Question 14

A service portal widget is supposed to load data from a table and display it in a list. The widget renders but shows no data. Which is the most likely cause?

Accepted Answer

An error in the widget's server script prevents data from being queried.. The widget renders (client-side works) but shows no data, indicating the server-side script that queries the table failed. Option A (ACL denial) would typically show an error or empty data but is less common than a script error. Option B (client script syntax error) would affect interactivity, not initial data load. Option C (portal page not configured) would prevent the widget from rendering entirely.

Answer

The table's ACL denies read access to the user.

Answer

The widget's client script has a syntax error.

Answer

The portal page is not configured to include the widget.

Question 15

A developer is creating a catalog item that requires a user to upload a file. Which variable type should be used?

Accepted Answer

Attachment. The Attachment variable type is specifically designed for file uploads in ServiceNow catalog items. It provides a built-in file picker and stores the uploaded file as an attachment on the requested record, enabling users to submit documents directly through the catalog form.

Answer

Multi Line Text

Answer

Single Line Text

Answer

Checkbox