CAD Certified Application Developer - ServiceNow Questions and Answers

The Create Branch operation is available from both Studio and the Git Repository. This operation allows you to create a new branch from an existing branch in your Git repository. You can use branches to work on different features or versions of your application without affecting the main branch. Reference: [Create a branch]

When evaluating Access Controls, ServiceNow searches and evaluates:

From the most specific match to the most generic match. This is the correct answer because ServiceNow follows a top-down approach when evaluating Access Control (ACL) rules, which are used to restrict the access to the data and functionality of the ServiceNow platform based on the user’s roles and conditions. ServiceNow starts with the most specific match, which is the field-level ACL rule, then moves to the table-level ACL rule, and finally to the global or * ACL rule. ServiceNow grants access if any of the ACL rules evaluates to true, and denies access if all of the ACL rules evaluate to false.

The following are not correct descriptions of how ServiceNow searches and evaluates Access Controls:

Only for matches on the current table. This is not correct because ServiceNow does not only look for matches on the current table, but also on the parent tables and the global or * table. For example, if there is no ACL rule for the incident table, ServiceNow will look for an ACL rule for the task table, which is the parent table of the incident table, and then for the global or * table, which is the parent table of all tables.

Only for matches on the current field. This is not correct because ServiceNow does not only look for matches on the current field, but also on the table that contains the field and the global or * table. For example, if there is no ACL rule for the short_description field on the incident table, ServiceNow will look for an ACL rule for the incident table, and then for the global or * table.

From the most generic match to the most specific match. This is not correct because ServiceNow does not follow a bottom-up approach when evaluating Access Controls, but a top-down approach, as explained above. References: Access Control Rules, ACL Evaluation Order

https://developer.servicenow.com/dev.do#!/learn/learning-plans/paris/new_to_servicenow/app_store_learnv2_securingapps_paris_access_controls_evaluation_order

"You must first select read access to grant any other API record operation." https://docs.servicenow.com/bundle/tokyo-application-development/page/build/applications/reference/r_TableApplicationAccessFields.html

The Application Access configuration fields control the access level for an application and its tables. The following Application Access configuration fields are not available if the Can read configuration field is not selected:

Can create. This field determines whether users can create records on the application tables.

Can update. This field determines whether users can update records on the application tables.

Can delete. This field determines whether users can delete records on the application tables.

These fields are not available because they depend on the Can read field, which determines whether users can view records on the application tables. If users cannot read records, they cannot create, update, or delete them either.

The following Application Access configuration fields are available regardless of the Can read configuration field:

All access to this table via web services. This field determines whether users can access the application tables using web services, such as REST or SOAP.

Allow configuration. This field determines whether users can configure the application tables, such as adding or modifying fields, views, or indexes. References: Application Access, Certified Application Developer (CAD) Learning Path

From: https://docs.servicenow.com/bundle/paris-application-development/page/script/general-scripting/reference/r_ScriptingAlertInfoAndErrorMsgs.html

g_form.showFieldMsg("field_name", "Hello World", "error"); Puts "Hello World" in an error message **below the specified field**. g_form.addInfoMessage() or g_form.addErrorMessage() place a blue box message at the top of the screen. Pg 126 of the CAD handbook

The method that prints a message on a blue background to the top of the current form by default is g_form.addInfoMessage(). The g_form object is a global object that provides access to form fields and UI elements on a form. The addInfoMessage() method is a method of the g_form object that displays an informational message next to the form header. The message has a blue background color by default, unless it is overridden by a CSS style. The addInfoMessage() method takes one argument, which is the message text to display. References: [ServiceNow Docs - GlideForm (g_form) API], [ServiceNow Docs - g_form.addInfoMessage()]

Comprehensive and Detailed Step-by-Step Explanation:

Definition of a Spoke:A "spoke" is a scoped application or component of an application that contains Flow Designer actions and integrations. Spokes provide reusable functionality and are typically used to extend the capabilities of Flow Designer.

Why It’s Called a Spoke:

Spokes are part of the ServiceNow Flow Designer framework.

They contain predefined actions that are reusable across multiple flows. For example, an "Email Spoke" might include actions for sending emails or managing email configurations.

Why Other Options Are Incorrect:

Option B (Flow): This refers to an individual flow, not the application containing reusable actions.

Option C (Bundle): There is no such term as "Bundle" specific to Flow Designer in ServiceNow.

Option D (Action): While flows contain actions, the scoped application that houses these actions is referred to as a spoke.

References:

ServiceNow Developer Documentation on Flow Designer Spokes​.

"Application developers must select an application as their current scope context." https://docs.servicenow.com/bundle/tokyo-application- development/page/build/applications/task/t_SelectAnAppFromTheAppPicker.html

Application developers can specify which ServiceNow page a user sees after submitting a new record using the Record Producer UI by writing a script in the Record Producer’s Script field: producer.redirect = “”;. This script sets the redirect property of the producer object to the URL of the desired page. For example, producer.redirect = “home.do”; will redirect the user to the homepage after submitting the record. The other options are not valid ways to specify the redirect page for a Record Producer. Reference: Populate record producer data and redirect users

Configuring the label of a field in a child table changes the label only on that table, not on the base table or the parent table. The base table is the table that contains the common fields for all the extended tables, and the parent table is the table that is directly extended by the child table. The label of a field on the base table or the parent table can be different from the label on the child table. References: [ServiceNow Docs - Table extension], [ServiceNow Community - How to change field label in child table]

https://developer.servicenow.com/dev.do#!/learn/learning-plans/rome/new_to_servicenow/app_store_learnv2_scripting_rome_debugging_client_scripts

The following are debugging strategies for client-side scripts, which run in the web browser and manipulate the user interface:

g_form.addInfoMessage(). This is a client-side API that displays an information message at the top of the form.

Field Watcher. This is a debugging tool that displays the current and previous values of one or more fields on a form.

jslog(). This is a client-side API that writes a message to the browser console.

The following is not a debugging strategy for client-side scripts, but for server-side scripts, which run on the ServiceNow platform and manipulate the database:

gs.log(). This is a server-side API that writes a message to the system log. References: Client-Side Scripting APIs, Debugging Client Scripts

To link a ServiceNow application to a Git repository, you need to provide the user name, URL, and password of the Git account that hosts the repository12. The URL is the address of the Git repository that you want to link to the application. The user name and password are the credentials that you use to access the Git account. Alternatively, you can use a personal access token instead of a password for increased security3.

References = 1: Link an application to source control - ServiceNow Docs 2: Publish an application to the application repository - ServiceNow 3: Linking an application to Git using a personal access token instead of a password - ServiceNow

 Tables that extend a table inherit the parent’s fields. Extending a table means creating a child table that shares the same columns and business logic as the parent table. For example, the Incident table extends the Task table, which means that all fields defined on the Task table are also available on the Incident table. Extending a table allows for reusing existing fields and behaviors without duplicating them on multiple tables. Reference: Table extension and classes

The fastest way to create and configure a Record Producer is to open the table in the Table records and select the Add to Service Catalog Related Link. This will automatically create a Record Producer with the same fields as the table and add it to the Service Catalog. You can then modify the Record Producer as needed. The other options require more steps and manual configuration. Reference: Create a record producer

Comprehensive and Detailed Step-by-Step Explanation:

Understanding Application Scope and Picker:

The Application Picker in ServiceNow allows developers to switch between different applications (scopes).

When you select an application from the Application Picker, the Application Scope is set to that application, enabling you to develop or configure within that scope.

Why Other Options Are Incorrect:

Option A: The Global application does appear in the Application Picker.

Option B: Selecting Global does not set the scope to Incident; it sets the scope to the Global application, which is not restricted by scoped boundaries.

Option D: Selecting an application does indeed set the Application Scope.

References:

ServiceNow Developer Documentation on Application Scope​.

https://docs.servicenow.com/bundle/tokyo-application-development/page/build/guided-app-creator/concept/guided-app-creator.html

https://docs.servicenow.com/bundle/tokyo-application-development/page/script/server-scripting/concept/c_ServerScripting.html

https://docs.servicenow.com/bundle/tokyo-servicenow-platform/page/administer/notification/task/t_CreateANotification.html

Inbound Action scripts are server-side scripts that run when an email is received by the system. They can use the current object to access the record that is created or updated by the email, and the email object to access the properties and methods of the email message. The previous and event objects are not available in Inbound Action scripts. The producer object is only available in Record Producer scripts, which are used to create records from a service catalog item.

References:

Inbound Action scripts

[Record Producer scripts]

Application developers configure ServiceNow using industry standard JavaScript to extend and add functionality. JavaScript is a scripting language that enables developers to create dynamic and interactive web pages, as well as manipulate data and logic on the server-side. ServiceNow provides various APIs and frameworks for developers to use JavaScript to customize and enhance the functionality of their applications, such as client scripts, UI policies, business rules, script includes, UI actions, and more. References: [ServiceNow Docs - JavaScript in ServiceNow], [ServiceNow Docs - Scripting in ServiceNow]

Checkbox tooltip: "Show this module when the user has the specified roles. Otherwise the user must have the roles specified by both the application menu and the module."

The following is true for the Override application menu roles configuration option when configuring a module:

Users with the module role but without access to the application menu access the module. This is true because the Override application menu roles option allows users to bypass the application menu role requirement and access the module directly if they have the module role. For example, if a module has the itil role and the Override application menu roles option enabled, and the application menu has the admin role, then a user who has the itil role but not the admin role can still access the module.

The following are not true for the Override application menu roles configuration option when configuring a module:

Self-Service users can access the module even though they do not have roles. This is false because the Override application menu roles option does not grant access to the module to users who do not have any roles. Self-Service users are users who do not have any roles assigned to them and can only access the Self-Service portal and the Knowledge Base. To access the module, users need to have at least the module role.

Admin is given access to the module even if Access Controls would ordinarily prevent access. This is false because the Override application menu roles option does not override the Access Control (ACL) rules that apply to the module. Access Control rules are used to restrict the access to the data and functionality of the ServiceNow platform based on the user’s roles and conditions. Admin is a role

https://docs.servicenow.com/bundle/tokyo-application-development/page/app-store/dev_portal/API_reference/GlideQuery/concept/GlideQueryGlobalAPI.html#GlideQueryAPI

https://docs.servicenow.com/bundle/tokyo-application-development/page/app-store/dev_portal/API_reference/glideRecordScoped/concept/c_GlideRecordScopedAPI.html

https://docs.servicenow.com/bundle/tokyo-application-development/page/script/server-scripting/concept/c_ServerScripting.html

Comprehensive and Detailed Step-by-Step Explanation:

Caller Access Fields:

Accessible from: Defines where the scriptable component (e.g., Script Include) can be accessed, such as "All application scopes" or "This application scope only".

None: Disables access, making the component unavailable for external use.

Caller Restriction: Controls which callers or scripts can access the component.

Why Other Options Are Incorrect:

Option A (Allow Configuration): This is not a valid caller access option.

Option B (Caller Permission) and Option F (Caller Tracking): These are not valid or recognized options in ServiceNow.

References:

ServiceNow Developer Documentation on Caller Access Fields​.

Roles are used to control access to applications and modules in the application navigator. Each application menu or module has a role field that specifies which role is required to view it. Users who do not have the specified role or a role that contains it will not see the application menu or module. Roles can also be used to control access to other features and capabilities in ServiceNow, such as tables, fields, scripts, and workflows.

References = Enable or disable an application menu or module, Grant a role access to applications and modules, Controlling access to applications and modules.

https://developer.servicenow.com/dev.do#!/learn/courses/sandiego/app_store_learnv2_learnmore_sandiego_learn_more/app_store_learnv2_learnmore_sandiego_form_and_list_layouts/app_store_learnv2_learnmore_sandiego_what_is_form_designer

The Form Designer is a tool that allows you to create and customize forms on the ServiceNow platform. The Form Designer has four main components:

Form layout: The form layout shows the preview of the form and allows you to drag and drop fields, sections, and related lists onto the form. You can also resize, reorder, and delete the elements on the form layout.

Page header: The page header shows the name of the table and the form that you are editing. You can also access the form properties, save the form, and switch to the form view from the page header.

Field navigator: The field navigator shows the list of available fields for the table and allows you to search, filter, and add fields to the form. You can also create new fields and edit existing fields from the field navigator.

Schema map: The schema map is not part of the Form Designer. The schema map is a separate tool that shows the relationships between tables and fields on the platform. You can access the schema map from the System Definition > Tables module or from the context menu of a table.

References:

[Form Designer]

[Schema map]

The statement that is not true for Modules is that every Module must be associated with a table. A Module is the functionality within an Application Menu that opens a content page in the content frame or a separate tab or window. A Module can be associated with a table, a list, a form, a report, a script, or any other type of page. For example, the Open Module under the Incident Application Menu opens a list of incident records from the Incident table, while the Overview Module under the Performance Analytics Application Menu opens a dashboard page with various charts and widgets. The other statements are true for Modules. Access to Modules is controlled with roles, as each Module can have one or more roles specified in its definition that determine who can see and access it. Modules open content pages, as they are links to different types of pages that provide information and functionality to users. Every Module must be part of an Application Menu, as they are the second-level navigation options for Applications. Reference: Modules

"Use an existing MID Server to connect to a Source Control repository. Linking or importing an application through a MID Server enables access to repositories behind a firewall." https://docs.servicenow.com/bundle/tokyo-application-development/page/build/applications/concept/c_SourceControlIntegration.html

https://docs.servicenow.com/bundle/tokyo-application-development/page/build/applications/task/t_SelectAnAppFromTheAppPicker.html

A UI Action is a button, link, or choice that can be clicked by a user to perform an action, such as submitting a form or running a script. The following are UI Action types:

List choice. This is a UI Action that appears as a choice list on a list of records. It can be used to perform an action on multiple records at once, such as deleting or updating them.

Form button. This is a UI Action that appears as a button on a form. It can be used to perform an action on the current record, such as saving or approving it.

List banner button. This is a UI Action that appears as a button on the banner of a list of records. It can be used to perform an action on the entire list, such as exporting or printing it.

The following is not a UI Action type:

Form choice. This is not a UI Action type, but a field type. A form choice is a field that displays a choice list on a form. It can be used to select a value from a predefined set of options, such as priority or state. References: UI Actions, Field Types

gs.print() and gs.log() are older and not available in scoped applications, whereas gs.debug(), gs.info(), gs.warn(), gs.error() work in both scoped applications and global are therefore are more versatile going forward in future versions.

Comprehensive and Detailed Step-by-Step Explanation:Inherited fields in ServiceNow are fields that are part of a parent table and automatically become part of child tables through inheritance. This structure is foundational in the ServiceNow data model, ensuring that child tables maintain a consistent relationship with their parent tables.

Here’s why inherited fields cannot be deleted from a child table:

System Design:ServiceNow employs a table inheritance model where child tables derive fields and properties from parent tables. Deleting inherited fields from a child table would break the integrity of the data model, as those fields are shared across multiple tables.

Impact on Functionality:Many inherited fields, such as sys_created_on or sys_updated_by, are integral to the functionality of the platform. Removing them could disrupt workflows, reporting, and auditing capabilities.

Alternative Approach:If you want to hide or restrict access to inherited fields in a child table, you can use ACLs (Access Control Lists) to prevent users from viewing or modifying these fields. Another option is to use UI Policies or Client Scripts to control their visibility on forms.

Developer Note:Attempting to delete inherited fields violates ServiceNow’s core principles of maintaining a robust and unified data structure. The platform enforces these rules to ensure consistent behavior across all tables in the hierarchy.

References:

ServiceNow Developer Documentation on Table Inheritance​.

Best practices outlined on SN Pro Tips regarding scoped application development and table structures​.

Comprehensive and Detailed Step-by-Step Explanation:

Table Extension in ServiceNow:Extending a table in ServiceNow means creating a child table based on a parent table. The child table inherits the fields, configurations, and functionality of the parent table.

What is Inherited:

Fields: All fields from the parent table are available in the child table.

Functionality: The child table benefits from any business logic or workflows defined for the parent table.

Access Controls: The child table respects the Access Control rules defined for the parent table unless explicitly overridden.

Why Other Options Are Incorrect:

Option B: This is incorrect because the new table does inherit fields from the parent table.

Option C: This is incorrect because you do not need to script or configure behaviors from scratch; they are inherited.

Option D: This is incorrect because Access Controls are not ignored; they still apply and can be extended or modified for the child table.

References:

ServiceNow Developer Documentation on Table Inheritance​.

"A table that extends another table is called a child class, and the table it extends is the parent class" - this is about halfway down in this link below: https://docs.servicenow.com/en-US/bundle/tokyo-platform-administration/page/administer/table-administration/concept/table-extension-and-classes.html

Flow Designer variables can store record data and complex data using the following data types:

Integer: A whole number that can be used in mathematical operations.

Array: A collection of items that can be accessed by their index or iterated over using a For each action.

String: Any kind of text, such as email addresses or the text contents of a file.

References:

Define and Use Data Types in a Flow (Flow Designer)

Variable data types - Power Automate | Microsoft Learn

Product Documentation | ServiceNow

The following is true for GlideUser (g_user) methods:

Can be used in Client Scripts, UI Policies, and UI Actions. This is true because GlideUser (g_user) methods are part of the client-side scripting APIs that provide information about the current user and the user’s preferences. Client Scripts, UI Policies, and UI Actions are all types of client-side scripts that run in the web browser and manipulate the user interface.

The following are not true for GlideUser (g_user) methods:

Can be used in Client Scripts and UI Policies only. This is false because GlideUser (g_user) methods can also be used in UI Actions, which are another type of client-side scripts that can be triggered by a user’s click on a button, link, or choice.

Can be used in Business Rules only. This is false because GlideUser (g_user) methods cannot be used in Business Rules, which are server-side scripts that run on the ServiceNow platform and manipulate the database. Business Rules use a different API to access the current user information, which is GlideSystem (gs).

Can be used in Business Rules, and Scripts Includes. This is false because GlideUser (g_user) methods cannot be used in Business Rules or Script Includes, which are both server-side scripts. Script Includes are reusable units of code that can be called from any server-side script. Script Includes also use GlideSystem (gs) to access the current user information. References: Client-Side Scripting APIs, GlideUser, Business Rules, Script Includes

 It is best practice to define the business requirements and the process(es) an application will manage as part of the application development plan. The following are some of the considerations to document as part of the business process:

Business problem. This is the description of the problem or opportunity that the application is intended to address or exploit. It should include the background, context, scope, and objectives of the problem or opportunity.

Data input/output. This is the specification of the data that the application will need to collect, store, manipulate, and display. It should include the data sources, formats, validations, transformations, and integrations of the data.

Users/stakeholders. This is the identification of the users and stakeholders who will be involved in or affected by the application. It should include the roles, responsibilities, expectations, and needs of the users and stakeholders.

Process steps. This is the definition of the steps and activities that the application will perform or support. It should include the inputs, outputs, triggers, conditions, and outcomes of each step or activity.

The following are not some of the considerations to document as part of the business process:

Project schedule. This is the estimation of the time and resources required to complete the application development project. It should include the milestones, deliverables, dependencies, and risks of the project. This is not part of the business process, but part of the project management plan.

Database capacity. This is the measurement of the amount of data that the application will generate and store in the database. It should include the data volume, growth rate, retention policy, and backup strategy of the data. This is not part of the business process, but part of the technical design and architecture of the application.

Available licenses. This is the number and type of licenses that the application will consume or require from the ServiceNow platform. It should include the license model, cost, and allocation of the licenses. This is not part of the business process, but part of the financial and legal aspects of the application. References: Application Development Process, Business Process Analysis

https://developer.servicenow.com/dev.do#!/learn/courses/tokyo/app_store_learnv2_flowdesigner_tokyo_flow_designer/app_store_learnv2_flowdesigner_tokyo_notifications_in_flow_designer/app_store_learnv2_flowdesigner_tokyo_inbound_email_and_flows

"By default, the system generates a watermark label at the bottom of each notification email to allow matching incoming email to existing records." https://docs.servicenow.com/bundle/tokyo-servicenow-platform/page/administer/notification/concept/c_WorkingWithWatermarks.html

Comprehensive and Detailed Step-by-Step Explanation:

Record Producer Overview:Record Producers in ServiceNow are a way to create records through a simplified user interface. Instead of displaying a typical form, a Record Producer uses a user-friendly UI tailored for quick and intuitive data entry.

Correct Link Type:

The URL (from Arguments) option is used to direct the user to a specific URL, such as the Record Producer interface. You can configure the URL in the module to point to the Record Producer by providing its unique sys_id or name.Example URL:

/catalog.do?sys_id=

Incorrect Options Explained:

Content Page (Option A): This opens a CMS page and is not used for Record Producers.

Script (from Arguments) (Option B): This runs a custom script but does not link directly to a Record Producer.

HTML (from Arguments) (Option D): This is used for rendering custom HTML, not for linking to a Record Producer.

References:

ServiceNow Developer Documentation on Modules and URL Arguments​.

A possible reason to build a custom app is to fulfill a specific use case on internal processes. For example, you may want to digitize a manual process that is not covered by an existing ServiceNow solution, such as managing inventory, tracking expenses, or scheduling events. Building a custom app on the Now Platform can help you automate workflows, improve data quality, and provide better user experiences. The other options are not valid reasons to build a custom app. To avoid using a code repository like GitHub or GitLab is not a reason to build a custom app, as you can still use source control integration with your custom app development. To create a custom integration for a 3rd party system is not a reason to build a custom app, as you can use integration tools such as IntegrationHub or REST APIs to connect with external systems without creating an app. To replace ServiceNow base tables is not a reason to build a custom app, as it is not recommended to modify or delete base tables that are essential for ServiceNow functionality. Reference: Build Custom Apps in ServiceNow – eBook

Comprehensive and Detailed Step-by-Step Explanation:

Options for Creating Tables in Guided Application Creator:

Create a table from scratch: This option allows you to define a completely new table with custom fields and configurations.

Create a table from a template: You can use predefined table templates to speed up table creation. Templates often include pre-configured fields and settings.

Extend a table: This allows you to create a new table by inheriting fields and functionality from an existing table, enabling reuse and consistency.

Why Other Options Are Incorrect:

Option A (Link to external tables): Linking to external tables is not an option provided in the Guided Application Creator; external data is typically accessed through integration methods.

Option D (Run import jobs): Import jobs are used for data migration, not for table creation in the Guided Application Creator.

Option E (Upload a spreadsheet): While uploading a spreadsheet can create tables, this is a feature of Import Sets, not the Guided Application Creator.

Option F (Use API calls): API calls are for integration and not an option for creating tables directly in the Guided Application Creator.

References:

ServiceNow Developer Documentation on Guided Application Creator​.

The Bar Chart and Pie Chart report types can be created by right-clicking on a column header in a table’s list. These report types show how individual pieces of data relate to the whole using proportional bars or slices. You can also choose different aggregation methods such as count, sum, average, min, max, or percent. Reference: [Create reports from lists]