CAD Exam Dumps - ServiceNow Certified Application Developer Questions and Answers

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​.

Administrators can grant non-admin users the ability to develop global applications. Delegated Development is for the scoped applications only

 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

In the Automated Test Framework (ATF) of ServiceNow, the "Impersonate" test step is used to simulate actions as a specific user. This is crucial for testing functionalities that depend on user roles, permissions, or specific user contexts.

Key Points:

Purpose: The "Impersonate" step allows the test to execute subsequent steps as if performed by the specified user, ensuring that role-based permissions and access controls are accurately tested.

Usage: To add an "Impersonate" step:

Open your test in ATF.

Click on "Add Test Step."

Select "Impersonate User."

Choose the user you want to impersonate for the test.

Considerations: Ensure that the user being impersonated has the necessary roles and permissions for the actions being tested. Additionally, be aware that impersonation affects both server-side and client-side operations during the test.

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​.

Search branch and merge branches are available features in Studio. Search branch allows you to search for a specific branch name or ID in your Git repository. Merge branches allows you to merge changes from one branch to another, resolving any conflicts that may arise. Push to external source control and push to update set are not available features in Studio. Push to external source control is a feature of Source Control Integration, which is a separate application from Studio. Push to update set is a feature of Update Set Previewer, which is also a separate application from Studio. Reference: Studio, Source Control Integration, Update Set Previewer

In ServiceNow, the gs object provides a range of methods for logging messages on the server side. However, the availability of these methods can vary depending on whether the application is global or scoped.

gs.info(): This method is available in scoped applications and is used to log informational messages to the system log. It provides a way to record general information during script execution.

Options A (gs.log()), B (gs.print()), and D (gs.debugLog()) are not available in scoped applications. These methods are either restricted to global applications or do not exist in the ServiceNow API.

For more detailed information, refer to the official ServiceNow documentation on server-side scripting:

ServiceNow provides several methods for developers to publish and share applications once they are ready for distribution. The supported methods include:

Publish to an application repository: This method allows developers to publish their applications to a centralized repository, enabling easy distribution and installation across multiple ServiceNow instances. The application repository serves as a hub where applications can be stored and accessed by other instances. snowunderground.com

Publish to an application repository: This method allows developers to publish their applications to a centralized repository, enabling easy distribution and installation across multiple ServiceNow instances. The application repository serves as a hub where applications can be stored and accessed by other instances. snowunderground.com

Publish to the ServiceNow Store: Developers can submit their applications to the ServiceNow Store, a marketplace where applications are reviewed, certified, and made available to all ServiceNow customers. Publishing to the Store involves a certification process to ensure the application meets ServiceNow's standards. support.servicenow.com

Publish to the ServiceNow Store: Developers can submit their applications to the ServiceNow Store, a marketplace where applications are reviewed, certified, and made available to all ServiceNow customers. Publishing to the Store involves a certification process to ensure the application meets ServiceNow's standards. support.servicenow.com

Publish to an update set: An update set is a container for capturing configuration changes in ServiceNow. Developers can publish applications to an update set, which can then be moved between instances, allowing for the transfer of application configurations and customizations. servicenow.com

Publish to an update set: An update set is a container for capturing configuration changes in ServiceNow. Developers can publish applications to an update set, which can then be moved between instances, allowing for the transfer of application configurations and customizations. servicenow.com

Options A (Publish to a spreadsheet), D (Publish to a local USB device), and F (Publish to a local drive) are not supported methods for publishing applications in ServiceNow. These options do not align with the platform's mechanisms for application distribution and deployment.

An application admin is a role that grants full access to an application and its tables, scripts, and other components1. An application admin can create, modify, and delete any element of the application, as well as publish and install it2. An application typically has an application admin role that is automatically created and assigned to the application creator3.

References = 1: Application administration - ServiceNow Docs 2: Application admin role - ServiceNow Docs 3: Application roles - ServiceNow Docs