Explanation
Dynamic actions are a declarative way to define client-side behavior without writing JavaScript code. You can create dynamic actions on an item, button, or region of a page by specifying the event, condition, affected elements, action, and other properties. Some of the statements that are true about creating and using dynamic actions are:
You can execute JavaScript code by creating a dynamic action. One of the supported action types is Execute JavaScript Code, which allows you to enter custom JavaScript code to run when the dynamic action fires.
If a client-side condition is defined, the true action will fire when the condition is met, and the false action will fire when it is not. You can define a client-side condition for a dynamic action to control when it should fire based on an expression or value. You can also define different actions for the true and false branches of the condition. You can add additional true actions to a dynamic action by clicking the Add True Action button in the Property Editor. If no client-side condition is defined, true actions will fire when the event occurs. Verified References: [Oracle Application Express 18: Creating Dynamic Actions], [Dynamic Action Enhancements in APEX 21.1 - Oracle Blogs]

Explanation
To create a chart in Oracle APEX, you need to provide some required fields that define the data source and appearance of the chart. You can use either the Create Page Wizard or Page Designer to create a chart. The required fields for creating a chart are:
Data Source: This field specifies the SQL query that returns the data for the chart. The query must include at least one column for the label and one column for the value of each data point. You can also include additional columns for grouping, color, or tooltip information.
Value Column: This field specifies the column from the data source query that contains the numeric values for the chart. The values are used to plot the data points on the chart and determine the size of each data point or segment.
Name: This field specifies the name of the chart region. The name is used to identify the region in Page Designer and other components, such as dynamic actions or processes.
Label Column: This field specifies the column from the data source query that contains the labels for the chart. The labels are used to display the name of each data point or segment on the chart or in the legend.

Explanation
In Oracle APEX, you can choose from different authentication methods to establish a user's identity and control access to your application. Authentication may require a user to provide some type of credentials, such as a user name and password, or could involve the use of digital certificates or a secure key. Three of the authentication methods that you can choose in Oracle APEX are:
Custom Authentication Scheme: This method allows you to create your own authentication logic using PL/SQL code or an external web service. You can also customize the login page and session management for your application.
No Authentication (using DAD): This method adopts the current database user as the authenticated user.
This approach can be used in combination with a mod_plsql Database Access Descriptor (DAD) configuration that uses basic authentication to set the database session user.
Built-in Authentication Scheme: This method allows you to use one of the preconfigured authentication schemes that ship with Oracle APEX, such as Open Door Credentials, LDAP Directory, Social Sign-In, and so on.

Explanation
A faceted search is a type of component that enables users to filter information easily and intuitively by selecting the options in each facet. A faceted search consists of a faceted search region and a search results region. The faceted search region displays on the left and upper part of the screen and shows possible values and occurrence counts for each facet. The search results region displays on the right side of the screen and shows the data that matches the selected facet values. The search results region can display as either a classic report or a cards report. Three of the statements that are true about faceted search are:
After the end user changes a facet, the results, dependent facets, and occurrence counts refresh immediately. This feature provides instant feedback to the user and allows them to refine their search criteria without reloading the page.
The right side of the page features a Search Results region, which can display as a classic report or a cards report. A classic report displays data in a tabular format with columns and rows. A cards report displays data in a grid of cards with images and text.
The facets are displayed on the left and upper part of the screen. This layout provides a clear separation between the facets and the results and allows users to see and access all the facets without scrolling.

Explanation
You can create an APEX workspace and build APEX apps on any of the following platforms:
Oracle Autonomous Cloud: This is a cloud platform that provides various services such as Autonomous Database, Oracle Cloud Infrastructure, and Oracle APEX Application Development. You can create an APEX workspace and build APEX apps on an Autonomous Database instance or an APEX Service instance.
Oracle XE: This is a free edition of Oracle Database that supports up to 12 GB of user data. You can install Oracle XE on your local machine and use it to create an APEX workspace and build APEX apps.
Amazon RDS: This is a cloud service that provides managed relational databases. You can create an APEX workspace and build APEX apps on an Amazon RDS for Oracle instance that supports Oracle APEX.
Microsoft Azure: This is a cloud platform that provides various services such as virtual machines, storage, and networking. You can create an APEX workspace and build APEX apps on a Microsoft Azure VM that runs Oracle Database and Oracle APEX.
Verified References: Oracle Autonomous CloudOracle XEAmazon RDSMicrosoft Azure