SNOW-CAD Practice Test 23 — 15 Questions

Question 1

A developer is designing a new dashboard for a ServiceNow application. The dashboard must display real-time data from a custom table and allow users to click on a chart segment to drill down to a filtered list of records. Which dashboard component should the developer use to achieve this interactive drill-down behavior?

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

Accepted Answer

A report with a bar chart and a drill-down configuration to a list.. ServiceNow reports with bar charts can be configured with drill-down links that open a target list filtered by the clicked segment. This built-in functionality works with custom tables and provides real-time data, offering the interactive drill-down behavior required without custom coding.

Answer

A gauge component with a threshold that opens a list when clicked.

Answer

A performance analytics widget with a breakdown and a linked list.

Answer

A UI Page with a custom chart and a GlideAjax call to load the list.

Question 2

A developer is creating a new custom table 'u_book' to track books in a library. The table should have a field for the book title, author, and ISBN. Which field type should be used for the ISBN to ensure it can store both numbers and letters?

Accepted Answer

String. The ISBN should be stored as a string to accommodate letters, numbers, and hyphens. String fields are designed for alphanumeric data and provide the necessary flexibility. Integer and decimal fields are numeric only, and reference fields are for linking to other records, so they are not suitable for this scenario.

Answer

Decimal

Answer

Integer

Answer

Reference

Question 3

A developer needs to create a new table 'u_incident_extension' that inherits all fields from the 'incident' table. The developer also wants to add a new field 'u_root_cause' that should only appear on the new table's form, not on the parent 'incident' form. Which table configuration should the developer use?

Accepted Answer

Create a new table that extends 'incident'.. Table extension is the correct way to inherit all fields from the 'incident' table. The new table will have all the fields of 'incident' plus any new fields added to it. The new field 'u_root_cause' can be added to the new table and will not appear on the parent form unless explicitly added. Other options either do not inherit fields or incorrectly modify the parent table.

Answer

Create a new table and manually add all the fields from 'incident'.

Answer

Add the 'u_root_cause' field directly to the 'incident' table.

Answer

Create a new table that references 'incident'.

Question 4

A developer is creating a new scoped application in ServiceNow Studio and wants to add a custom table. They need to ensure that the table is only accessible within the application scope and not from other scopes. Which table attribute should they set?

Accepted Answer

Set the table's 'Accessible from' attribute to 'This application scope only'.. To restrict a table's access to only its own application scope, the developer should set the 'Accessible from' attribute to 'This application scope only'. This ensures that other scopes cannot access the table, providing scope isolation. Other options do not achieve this specific restriction.

Answer

Create an ACL that denies read access to all other scopes.

Answer

Set the table's 'Application' to the scoped application.

Answer

Enable the 'Isolate script' attribute on the table.

Question 5

A developer is creating a new application in ServiceNow Studio. They want to ensure that the application can be easily moved from a development instance to a production instance. Which deployment method should they use?

Accepted Answer

Application Repository. The Application Repository is the standard deployment mechanism for scoped applications in ServiceNow. It allows developers to publish applications as versioned packages that can be installed on other instances, ensuring consistent deployment and easy updates. It handles dependencies and supports rollback if needed.

Answer

Update Sets

Answer

XML Export

Answer

Clone and Patch

Question 6

A developer is building a custom table 'u_contract' that must have a field to store the contract owner. The owner is always a user from the sys_user table, and the field should display the user's name and allow selection from a list. Which field type and configuration should the developer use?

Accepted Answer

Reference field pointing to sys_user. A Reference field pointing to sys_user is the correct choice because it creates a proper relationship to user records, displays the user's name, and provides a selection list. It maintains referential integrity and supports dot-walking to user attributes. Other field types either store static text, allow multiple values, or are not optimized for fixed-table references, making them unsuitable for a single contract owner.

Answer

String field with a choice list of user names

Answer

Document ID field referencing sys_user

Answer

List field with a user table reference

Question 7

A developer has a custom table 'u_employee' with a field 'u_department' that is a Reference to the 'cmn_department' table. The developer needs to ensure that only departments with an 'active' status of true can be selected in the 'u_department' field. Which configuration should the developer apply?

Accepted Answer

Add a reference qualifier to the 'u_department' field: 'active=true'.. A reference qualifier on the field dictionary is the correct way to filter the records available in a reference field. By setting it to 'active=true', only active departments can be selected. This is a server-side, declarative configuration that applies consistently across all interfaces. The other options either do not filter selection, only validate after submission, or use a non-existent attribute.

Answer

Add a dictionary attribute 'ref_qual' with the value 'active=true'.

Answer

Create a business rule that validates the selected department is active before insert or update.

Answer

Create a UI Policy that hides the 'u_department' field when the selected department is inactive.

Question 8

A developer is using ServiceNow Studio to build a scoped application. The developer needs to add a new table to the application. Which Studio feature should be used to define the table and its fields?

Accepted Answer

Table Designer. The Table Designer in ServiceNow Studio is specifically designed for creating and modifying tables and fields within a scoped application. It provides a visual, integrated experience that automatically sets the correct application scope. Other designers focus on form or list presentation and cannot create new tables.

Answer

List Designer

Answer

Schema Map

Answer

Form Designer

Question 9

A developer needs to create a script that runs on the server side and is triggered whenever a new record is inserted into the 'problem' table. The script must set the 'opened_at' field to the current date and time if it is not already set. Which type of script should the developer use?

Accepted Answer

A business rule with the 'before' insert timing.. The requirement is to run server-side logic when a new problem record is inserted, specifically to set opened_at if empty. A before insert business rule executes on the server before the record is saved, allowing modification of the current record. This ensures the field is set correctly at creation time without user intervention.

Answer

A client script with an onSubmit function.

Answer

A UI action with the 'client' checkbox selected.

Answer

A scheduled job that runs every minute.

Question 10

A developer is creating a new Service Portal widget that displays a simple greeting message. The greeting should be personalized with the logged-in user's first name. Which server script code should the developer use to retrieve the user's first name?

Accepted Answer

var user = gs.getUser(); var firstName = user.getFirstName();. The most direct and efficient method to get the current user's first name in a server script is to use gs.getUser().getFirstName(). This avoids unnecessary database queries and correctly returns the first name. Other options either return the full display name or require additional GlideRecord queries, which are less efficient and not the intended approach for this simple requirement.

Answer

var firstName = gs.getUserDisplayName();

Answer

var firstName = gs.getSession().getUser().first_name;

Answer

var gr = new GlideRecord('sys_user'); gr.get(gs.getUserID()); var firstName = gr.first_name;

Question 11

A developer needs to display a list of active incidents on a Service Portal page. The list must refresh automatically every 30 seconds without a full page reload and must respect the user's existing list filter. Which approach should the developer use?

Accepted Answer

Use the sp_widget directive with a server script that queries the incident table and a client script that uses setInterval to call the server script every 30 seconds.. To display an auto-refreshing list in Service Portal, a custom widget is needed because standard list pages lack auto-refresh functionality. The widget's server script can query the incident table using the user's filter, and the client script can call the server script periodically using setInterval. This maintains the single-page application behavior and provides the required dynamic updates without full page reloads.

Answer

Create a UI Page with a jelly script that includes a <g:list> tag and set the refresh attribute to 30 seconds.

Answer

Use the Service Portal list page and configure the list to auto-refresh via the list's context menu.

Answer

Embed a dashboard with a list indicator that has a refresh interval of 30 seconds.

Question 12

A developer is creating a custom table 'u_inspection' that extends the 'task' table. The developer needs to add a field that automatically calculates the due date as 30 days after the 'opened_at' date. The field must be stored in the database and updated whenever the 'opened_at' changes. Which approach should the developer use?

Accepted Answer

Create a Date field and a Business Rule that runs on insert and update to set the due date.. A Business Rule running on insert and update can set the due date field to the value of 'opened_at' plus 30 days. This ensures the value is stored in the database and recalculated whenever 'opened_at' changes, regardless of whether the change comes from the UI, API, or import. Calculated fields are not stored, Client Scripts are client-side only, and UI Policies cannot set values. Therefore, the Business Rule approach is correct.

Answer

Create a Date field and a UI Policy that sets the due date when opened_at changes.

Answer

Create a Calculated field with a script that adds 30 days to opened_at.

Answer

Create a Date field and a Client Script that sets the due date on the form.

Question 13

A developer is troubleshooting a new business rule that should populate the 'assigned_to' field on the 'incident' table with the caller's manager when the incident is created. The business rule is set to 'before insert' and is active. However, after testing, the 'assigned_to' field remains empty on new incidents. The script includes the line: current.assigned_to = current.caller_id.manager; There are no errors in the system log. What is the most likely cause?

Accepted Answer

The 'caller_id' field does not reference a user record with a populated 'manager' field.. The business rule uses dot-walking to access the manager of the caller. If the caller's user record lacks a manager, the assigned_to field will be empty. Since the rule is before insert and active, and no errors occur, the most plausible cause is that the manager field is not populated for that caller. Checking the caller's user record would confirm this.

Answer

The 'assigned_to' field is not writable on the incident table.

Answer

The business rule is running before the 'caller_id' field is populated.

Answer

Business rules cannot set fields on the same record they are triggered on.

Question 14

A developer is creating a new Service Portal page and wants to add a widget that displays a list of the current user's open incidents. The widget should update automatically when a new incident is assigned to the user. Which Service Portal feature should the developer use to achieve this real-time update?

Accepted Answer

Use the spUtil.recordWatch method to subscribe to record changes.. The spUtil.recordWatch method is specifically designed for Service Portal widgets to listen for record changes and trigger updates. It uses the platform's real-time event system to notify the client when relevant records change, ensuring the widget reflects new assignments without polling or manual refresh.

Answer

Use a GlideAjax call in the widget's client script to fetch data on page load only.

Answer

Use a client script with a setInterval function to poll the server for updates.

Answer

Use a scheduled job to refresh the widget data every minute.

Question 15

A developer is building a custom scoped application in ServiceNow. The application includes a table named 'u_asset_request' that extends the 'task' table. The developer needs to ensure that when an asset request is created, a related record is automatically created in the 'u_asset_request_line' table. The developer writes a business rule on 'u_asset_request' that runs after insert and uses GlideRecord to insert into 'u_asset_request_line'. However, during testing, the related record is not being created. The business rule is active and has no conditions. What is the most likely cause?

Accepted Answer

The user running the business rule does not have write access to the 'u_asset_request_line' table.. Business rules run under the security context of the user who initiated the action. If that user does not have write access to the target table, the insert will be denied, often without an explicit error in the UI. Since the business rule is active and unconditional, the most likely cause is insufficient permissions on the 'u_asset_request_line' table. Developers should verify ACLs and consider running the rule as system if appropriate.

Answer

The business rule is missing the 'setWorkflow(false)' call, causing a recursive loop.

Answer

The 'u_asset_request_line' table does not have a reference field to 'u_asset_request', so the insert fails silently.

Answer

The business rule is not running because it is set to run after insert, but the record is being inserted via a script that bypasses business rules.