SNOW-CAD Practice Test 25 — 15 Questions

Question 1

A developer needs to write a script that runs when a user clicks a UI Action button on the Incident form. The script must validate that the 'Short description' field is not empty and then update the incident. Which type of UI Action script should the developer use?

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

Accepted Answer

Client-side script. For UI Actions, client-side scripts are used to perform validation and logic in the browser before the form is submitted. They can access field values, show alerts, and conditionally execute the action. A client-side script can check if Short description is empty and prevent the update, providing immediate feedback. Server-side scripts and other mechanisms run after submission or are not directly tied to the button click.

Answer

Script Include

Answer

Business Rule

Answer

Server-side script

Question 2

A developer is building a custom UI Page for an internal tool in ServiceNow. The page must display a table of records and allow inline editing without a full page reload. The developer wants to use the platform's built-in client-side data binding and rendering framework to minimize custom JavaScript. Which approach should the developer take?

Accepted Answer

Use the AngularJS-based client scripts and directives provided by the ServiceNow platform within the UI Page.. The ServiceNow platform includes an AngularJS-based client framework that can be leveraged within UI Pages to provide data binding, directives, and asynchronous data loading. This allows developers to build interactive, inline-editable tables without relying on full page reloads or writing a custom rendering engine, directly satisfying the scenario's constraints.

Answer

Use a UI Action that calls GlideAjax to refresh the entire page after each edit.

Answer

Use UI Macros with a custom renderer to generate the table and attach DOM event listeners manually.

Answer

Use Jelly with g:list and g:form tags to render the table and handle edits server-side.

Question 3

A developer is building a transform map to load vendor records into a custom table. The source file contains a vendor code that uniquely identifies each vendor, but the same vendor may appear multiple times in future loads. The developer wants the transform map to update the existing vendor record instead of inserting a duplicate. Which action should the developer take?

Accepted Answer

Set the coalesce field on the vendor code in the transform map.. Coalescing on the vendor code is the correct approach because it instructs the transform map to look up existing target records by that field and update them when a match is found. Alternative approaches such as database views, business rules, or data source options do not provide the match-and-update behavior required to avoid duplicate vendor records across repeated loads.

Answer

Add a business rule on the vendor table that checks for duplicates before insert.

Answer

Create a database view that joins the import set table to the vendor table.

Answer

Enable the 'Update existing records' option in the data source definition.

Question 4

A developer is using an import set to load data into a staging table. After the import set is created, the developer needs to transform the data into the target table. Which tool is used to define the mapping between the staging table and the target table?

Accepted Answer

Transform map. A transform map is the tool used to define how data from an import set staging table maps to the target table. It includes field maps, coalesce rules, and scripts. Data sources and import set tables are part of the import process but do not define the transformation mapping. Field maps are individual mappings within a transform map.

Answer

Field map

Answer

Import set table

Answer

Data source

Question 5

A developer is writing a scheduled script that uses GlideRecord to process a large number of records in the 'incident' table. The script currently updates each record inside a single while loop and occasionally exceeds the transaction time limit. Which approach should the developer use to avoid the time limit while still processing all records?

Accepted Answer

Use GlideRecord with setLimit and process records in smaller batches across multiple scheduled runs.. Processing records in smaller batches across multiple scheduled runs is the correct way to stay within transaction limits while eventually handling all records. Increasing limits, relocating the loop, or using aggregation does not reduce per-transaction workload and either affects the whole instance or fails to perform the needed updates.

Answer

Increase the transaction time limit in the system properties.

Answer

Use a GlideAggregate to update all records at once.

Answer

Move the loop into a business rule that runs on the incident table.

Question 6

A developer needs a form to display a field only when the Priority field is set to Critical, and the field must appear immediately as the user changes the value without saving the record. Which configuration accomplishes this?

Accepted Answer

Create a UI Policy with a condition on Priority equals Critical, and set the target field to Visible when the condition is true.. UI Policies run on the client and re-evaluate their conditions as field values change, so a condition on Priority equals Critical with the target field set to Visible produces immediate show/hide behavior without saving. Data Policies, Access Control rules, and scheduled jobs operate on the server or at the security layer and cannot deliver real-time form visibility changes.

Answer

Create an Access Control rule that grants read access to the target field only when Priority equals Critical.

Answer

Create a Data Policy with a condition on Priority equals Critical and mark the target field as mandatory.

Answer

Create a scheduled job that sets the field to read-only unless Priority equals Critical.

Question 7

A developer is building a Scripted REST API in ServiceNow to expose data from the Incident table. The API must allow external clients to retrieve incidents filtered by a query parameter. The developer wants to ensure that the API returns only the fields specified by the client in a comma-separated list. Which approach should the developer use to dynamically select fields in the response?

Accepted Answer

Use the GlideRecord API's setFields method with the client-provided field list.. The correct method is setFields, which allows the developer to specify a comma-separated list of fields to be included in the GlideRecord. This reduces overhead and returns only the requested data. Other methods like addQuery are for filtering records, not selecting fields, and getDisplayValue and setValue serve entirely different purposes.

Answer

Use the GlideRecord API's setValue method to assign the field list to a temporary field.

Answer

Use the GlideRecord API's addQuery method to filter fields based on the client-provided list.

Answer

Use the GlideRecord API's getDisplayValue method to retrieve only the specified fields.

Question 8

A developer needs to create a REST API endpoint in ServiceNow that external clients will call to retrieve incident data. The endpoint must only respond to GET requests at the path /api/now/custom/incidents and must return JSON. Which platform feature should the developer use to implement this endpoint?

Accepted Answer

Scripted REST API. A custom REST endpoint that responds to GET at a specific path and returns JSON requires defining the endpoint on the platform. Scripted REST API provides the ability to create API definitions and resources with custom scripts, allowing full control over HTTP methods, paths, and response formats. Outbound REST messages and SOAP or import set APIs do not offer this inbound customization.

Answer

Import Set REST API

Answer

Scripted SOAP Web Service

Answer

REST Message

Question 9

A developer is working in ServiceNow Studio on a scoped application that includes a custom table. They need to add a new field to that table, and the field must be available for use in server-side scripts within the same application scope. Which action should the developer take in Studio?

Accepted Answer

In Studio, navigate to the application's Data Model, select the table, and use the Create Field action to add the new field.. Within ServiceNow Studio, the Data Model section is the designated place to create and manage tables and fields for a scoped application. Using the Create Field action ensures the field is properly scoped, captured in the application's update set, and immediately available for server-side scripting within that scope. Other methods may create the field but do not integrate with the application development lifecycle.

Answer

Open the table's record in the Tables module and add a new column directly to the table.

Answer

Add the field directly through the sys_dictionary table using a background script.

Answer

Create a new dictionary override record for the table and define the field there.

Question 10

A developer is creating a new custom application in ServiceNow. The application requires a form that allows users to enter data for a custom table. The developer wants to ensure that the form is user-friendly and includes field-level help. Which ServiceNow feature should the developer use to provide contextual help for each field on the form?

Accepted Answer

Field help. Field help is the ServiceNow feature that allows developers to add descriptive help text to form fields. This text appears when the user clicks a help icon next to the field, providing guidance without leaving the form. It supports HTML, enabling rich formatting. Other options like field hints, UI policies, and client scripts serve different purposes and do not provide the same level of contextual help.

Answer

UI policies

Answer

Field hints

Answer

Client scripts

Question 11

A developer needs to add a field to a custom table 'u_loan_application'. The field must store the date and time when the application was submitted, and it must be read-only after submission. Which field type should be used for the submission timestamp?

Accepted Answer

Date/Time. A submission timestamp needs both date and time, and the Date/Time field type captures both while supporting time zone handling and native reporting. Read-only behavior after submission can be enforced with a UI policy or dictionary attribute, so Date/Time is the correct field type for this requirement.

Answer

Date

Answer

String

Answer

Integer

Question 12

A developer needs to import data from a CSV file into a custom table. The CSV file contains 50,000 rows. The import must be performed during off-peak hours to minimize performance impact. Which method should the developer use to schedule the import?

Accepted Answer

Use the 'Scheduled Data Import' feature by configuring a scheduled import job that runs at a specified time.. The Scheduled Data Import feature is designed specifically for scheduling imports at specified times. It allows you to configure a data source and transform map, and set a schedule. This is the best practice for off-peak imports, ensuring minimal impact on system performance. Other options involve custom scripting or manual steps that are not recommended.

Answer

Use a business rule on the sys_import_set table to trigger the import when the system load is low.

Answer

Create a scheduled job that runs a script to load the CSV file using GlideImportSetLoader and then process the import set.

Answer

Manually upload the CSV file and then create a scheduled job to run the transform map at a later time.

Question 13

A developer is creating a client script that should run when a user changes the 'priority' field on an incident form. The script should display an alert if the priority is set to '1 - Critical'. Which type of client script should the developer use?

Accepted Answer

onChange. The onChange client script type is triggered when a specified field's value changes on a form. By configuring the script with the field name 'priority', it will run each time the user selects a different priority, enabling the alert condition to be evaluated immediately. This matches the scenario's need for dynamic feedback on field modification.

Answer

onCellEdit

Answer

onSubmit

Answer

onLoad

Question 14

A developer is building a Service Portal page that must display a list of open incidents assigned to the current user. The list should be interactive, support sorting and paging, and allow the user to open a record in a new tab. The developer wants to use the most appropriate Service Portal widget for this requirement. Which widget should be used?

Accepted Answer

List. The List widget is the standard Service Portal widget for displaying a set of records with interactive features such as sorting, paging, and record navigation. It is specifically built to handle lists of records from a table, making it the correct choice for showing open incidents assigned to the current user.

Answer

Form

Answer

Simple List

Answer

Data Table

Question 15

A developer must expose a custom REST endpoint that accepts a JSON payload containing an incident number and a short work note. The endpoint should look up the incident by number, append the work note, and return the updated incident's sys_id and state. The developer creates a Scripted REST API with a resource. Which object within the script provides access to the request body and the query parameters?

Accepted Answer

request. Within a Scripted REST API resource, the platform automatically injects a request object holding the inbound HTTP details and a response object for the outbound result. Reading the JSON payload and query string requires the request object, while the response object is only for setting status, headers, and body. The other names are not valid bindings in this execution context, so they cannot supply the incident number or work note.

Answer

RESTAPIRequest

Answer

g_request

Answer

response