SNOW-CAD Practice Test 20 — 15 Questions

Question 1

A developer needs to transform a JSON payload received from an external logistics provider into ServiceNow field values before inserting a record. The transformation involves renaming fields, concatenating address lines, and converting a Unix timestamp to a glide_date_time. Which platform feature is designed for this task?

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

Accepted Answer

Import Set with a Transform Map and field transform scripts. Import Sets stage inbound data and Transform Maps apply field mappings and scripts to reshape values before writing to the target table. Renaming fields, concatenating address components, and converting a Unix timestamp to glide_date_time are typical OnBefore transform script tasks. Coalesce fields prevent duplicate records, and the import run history provides auditable logs, making this the standard pattern for inbound logistics integrations.

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Data Lookup and Record Matching rules on the target table

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Scheduled job with a GlideRecord insert loop and JSON.parse

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Outbound REST message with a custom response processor

Question 2

A developer is working in ServiceNow Studio on a scoped application. The developer needs to create a new UI Policy that makes a field mandatory when another field is set to a specific value. Which application file type should the developer select from the Create Application File menu?

Accepted Answer

Client Development > UI Policy. UI Policies are declarative client-side rules that dynamically change form field properties such as mandatory, read-only, and visible based on conditions. They are created under Client Development in Studio. This approach requires no scripting and is easier to manage than client scripts for simple field logic. The other options involve scripting or server-side logic, which are not necessary for this requirement.

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Server Development > Business Rule

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Server Development > Script Include

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Client Development > Client Script

Question 3

A developer is building a scoped application in ServiceNow Studio. The application needs to read data from a global table that is not part of the application's scope. Which configuration must the developer perform to allow the scoped application to access that global table?

Accepted Answer

Add a cross-scope access record for the table in the Application Access section of the scoped application.. In ServiceNow, scoped applications are isolated by default. To access tables or other resources from a different scope, such as global, the application must have an explicit cross-scope access record. This record specifies the table and the type of access (read, write, etc.) allowed. Without it, scripts in the scoped application will fail to access the global table.

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Enable the 'Allow access to all tables' property in the application's settings.

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Create a new table in the scoped application that extends the global table.

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Set the application's scope to global so that it can access all tables in the instance.

Question 4

A developer is using ServiceNow Studio to build a scoped application that includes a custom table and several business rules. They need to ensure that the application can be successfully deployed to another instance. Which two actions should the developer take? (Choose two.)

Accepted Answer

Use the application repository to publish the application and then install it on the target instance.. To deploy a scoped application to another instance, developers can use update sets or the application repository. Update sets capture all customizations and can be transferred between instances. The application repository allows publishing a versioned application that can be installed on other instances, ensuring all components are included. Both methods maintain the application's integrity and dependencies.

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Manually export each table and business rule as XML files and import them on the target instance.

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Publish the application to the ServiceNow Store and install it from there on the target instance.

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Create a new application scope on the target instance with the same name before deploying.

Question 5

A developer is building a Service Portal widget that displays a user's open incidents. The widget must allow the user to click on an incident to view details in a modal dialog without leaving the portal page. The developer wants to implement this using standard Service Portal functionality. Which approach should the developer use?

Accepted Answer

Use the spModal service to open a modal dialog that loads a widget displaying the incident details.. The spModal service is the standard Service Portal service for opening modal dialogs. It can load a widget by its ID or sys_id, passing parameters such as the incident record's sys_id. This allows displaying incident details in a modal while keeping the user on the portal page. Other options either navigate away, require custom AngularJS code, or use iframes, which are not the standard or recommended approaches for this scenario.

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Embed an iframe within the widget that loads the incident record's standard UI page.

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Use the $uibModal service from AngularJS to open a modal with a custom template that displays incident details.

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Create a UI Page that displays incident details and link to it using a standard anchor tag with target="_blank".

Question 6

A developer needs to populate a related list on the 'problem' form that shows all 'incident' records whose 'problem_id' field references the current problem. The relationship is one-to-many and no many-to-many table is involved. Which ServiceNow feature should the developer configure to add this related list?

Accepted Answer

A one-to-many relationship definition from problem to incident. A one-to-many relationship definition is the native ServiceNow feature for displaying child records that reference a parent record via a reference field. Since incident already has a reference to problem, defining this relationship on the problem table adds a related list showing all incidents for the current problem. The other options either add unneeded complexity or do not provide the expected related list behavior.

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A many-to-many relationship definition between problem and incident

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A database view joining problem and incident

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A UI action that runs a GlideRecord query and displays results in a modal

Question 7

A developer needs to ensure that a custom table 'u_equipment' has a field 'u_serial_number' that must be unique across all records. The developer wants to enforce this at the database level to prevent duplicates even during imports. What should the developer do?

Accepted Answer

Add a unique index on the 'u_serial_number' field in the table's dictionary.. To enforce uniqueness at the database level, a unique index must be created on the field. This ensures that no two records can have the same value, even during bulk imports or direct database operations. Business rules, client scripts, and data policies operate at the application layer and can be bypassed.

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Configure a data policy that makes the field mandatory and unique.

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Create a before insert business rule that checks for existing records with the same serial number and aborts if found.

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Create a client script that validates the field on the form and displays an error if a duplicate exists.

Question 8

A developer must enforce that the 'u_priority' field on the 'u_training_course' table only accepts values from a specific set of choices and that the choices are presented as a dropdown on the form. The values must be stored as integers to support efficient sorting and reporting. Which field type should the developer use?

Accepted Answer

Choice. A Choice field is designed to store integer values with corresponding display labels, and it restricts input to the defined choices. It can be configured to appear as a dropdown on the form, meeting both the input restriction and the storage requirement. Other field types either do not enforce choices or do not store integers natively.

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Integer

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String

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Reference

Question 9

A developer needs to import data from a CSV file into a custom table 'u_vehicle'. The CSV contains a column 'purchase_date' with values like '2023-01-15'. The target field 'u_purchase_date' is of type Date. During the transform, the date is incorrectly stored as '2023-01-15 00:00:00' in a Date/Time field. What is the most likely cause?

Accepted Answer

The transform map field 'u_purchase_date' is mapped to a Date/Time field instead of a Date field.. The most likely cause is that the target field 'u_purchase_date' is of type Date/Time rather than Date. When a date-only value is stored in a Date/Time field, ServiceNow appends a time of 00:00:00. To store only the date, the target field must be of type Date. This is a common pitfall during data imports.

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The CSV file uses the ISO 8601 date format, which ServiceNow cannot parse correctly.

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The source CSV has a hidden time component that is being parsed.

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The transform script is using the setValue() method with a string instead of a GlideDateTime object.

Question 10

A developer needs to create a choice field on a custom table that allows users to select a color from a predefined list. Which data type should be used for the field?

Accepted Answer

Choice. The Choice field type is specifically designed to provide a predefined list of options. It stores the selected value as a string and ensures users can only select from the defined choices. This is the standard way to implement a dropdown or radio button list on a form.

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Integer

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String

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Reference

Question 11

A developer has created a custom table 'u_vehicle' that extends the 'cmdb_ci' table. The developer needs to create a record in 'u_vehicle' and also set a field on the parent 'cmdb_ci' record. Which approach is correct when using GlideRecord?

Accepted Answer

Create a GlideRecord on 'u_vehicle', set both the child-specific field and the inherited parent field, then call insert(). The record will be stored in the 'u_vehicle' table with all fields.. In ServiceNow, when a table extends another, the child table inherits all fields from the parent. A single record in the child table contains values for both parent and child fields. Therefore, creating a GlideRecord on the child table and setting both child-specific and inherited parent fields before calling insert() is the correct approach. This avoids unnecessary database operations and ensures data integrity.

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Create a GlideRecord on 'cmdb_ci', set the field, and insert. Then create a GlideRecord on 'u_vehicle' and set the sys_id to the parent's sys_id.

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Create a GlideRecord on 'u_vehicle', set the child field, insert the record, then use a separate GlideRecord on 'cmdb_ci' to update the parent field using the sys_id from the inserted record.

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Create a GlideRecord on 'u_vehicle', set the parent field value, and call insert(). The parent field will be automatically set on the 'cmdb_ci' record.

Question 12

A developer needs to create a transform map that imports user data from an LDAP source. The source has a field 'manager' that contains the distinguished name (DN) of the manager. The target 'manager' field on the User table is a reference to another User record. Which TWO steps are required to correctly populate the manager reference? (Choose two.)

Accepted Answer

Ensure the target 'manager' field is of type Reference and points to the User table.. To populate a reference field from a source that provides a DN, the target field must be a Reference to the User table, and a transform script is needed to look up the User by DN and set the sys_id. Direct mapping or coalescing on the manager field alone will not resolve the reference correctly.

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Use a field map with a reference qualifier to dynamically filter the User table based on the DN.

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Use a coalesce on the 'manager' field to match existing User records by their DN.

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Map the 'manager' source field directly to the 'manager' target field as a string.

Question 13

A developer needs to create a database view that combines data from the 'incident' table and the 'problem' table. The view should show incidents that are linked to a problem via the 'problem_id' field on the incident. Which type of database view should be used?

Accepted Answer

A left join view with incident as the primary table and problem as the secondary table, joining on incident.problem_id = problem.sys_id.. To create a database view that shows incidents and their linked problems, the incident table should be the primary table. A left join ensures that all incidents are included, regardless of whether they have a linked problem. The join condition should link incident.problem_id to problem.sys_id. This configuration provides a comprehensive view of incidents with optional problem details.

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An inner join view with incident as the primary table and problem as the secondary table, joining on incident.problem_id = problem.sys_id.

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A left join view with problem as the primary table and incident as the secondary table, joining on incident.problem_id = problem.sys_id.

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A right join view with problem as the primary table and incident as the secondary table, joining on incident.problem_id = problem.sys_id.

Question 14

A developer needs to expose a custom Scripted REST API endpoint that accepts a JSON payload containing an 'accountNumber' field and returns account details. The endpoint must validate that the caller supplies a valid API key in the request header before any business logic executes. Where should the API key validation be implemented?

Accepted Answer

In the resource script, before processing the request body, by reading the request header and comparing it to a stored API key record.. Scripted REST APIs in ServiceNow do not include a built-in API key authentication type, so developers must implement key validation manually. The resource script is the earliest point where the incoming request is accessible, allowing the header to be read and compared to a stored key before any data processing occurs. This ensures unauthorized calls are rejected promptly and consistently.

Answer

In the Scripted REST API's security configuration, by setting the authentication type to 'API Key' and selecting the API key record.

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In a Before Query business rule on the table being accessed, checking the request header against the API key.

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In a Script Include that is called from the REST API's 'Get' method, by passing the API key as a parameter.

Question 15

A developer needs to create a custom REST API endpoint in ServiceNow that accepts a JSON payload containing a case number and returns the case status. The endpoint must be accessible without authentication for a short pilot. Which approach should the developer use?

Accepted Answer

Create a Scripted REST API with a resource, and in the resource script set the response body and status code.. A Scripted REST API is the platform feature designed for building custom inbound REST endpoints. By defining a resource and writing server-side script, the developer can parse the incoming JSON, look up the case, and return the status with the appropriate HTTP status code. This is the standard, supported method for creating custom APIs in ServiceNow.

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Create a Business Rule on the Case table that triggers on insert and returns the status via an outbound REST call.

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Create a Script Include of type 'REST' and expose it using a UI Page.

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Create a REST Message record and configure an HTTP method to receive the case number.