Excercise 2 Outsytems Reactive Web

Which of the following is False?

• A reactive web application is an application for multiple devices.

• Data requests are performed synchronously.

• The code generated by Outsystems results in a single page application.

• A developer creates the Reactive Web App in Service Studio.

Answer explanation

Data is requested asynchronously, allowing for a more fluid experience.

The business concepts that need to be stored and accessed in our applications must be modeled as ...

• Entities

• Entity diagrams

• Entity relationships

• Database tables

Answer explanation

Ideally, each business concept will be mapped into a single entity.

Which of the following options is false?

• Input parameters allow data to pass between screens when navigating between them.

• Local variables on one Screen can be accessed directly from another Screen.

• Local variables allow the temporary storage of relevant information within a Screen.

• When the value of a local variable changes, the user interface reacts immediately.

Answer explanation

The scope of the Input Parameters and Local Variables is limited to the Screen where they are defined

Which of the following behaviors is true for links and buttons?

• Links can only navigate to screens.

• Buttons can only have a screen action as a target when they click.

• Links and buttons can navigate to screens or trigger screen actions.

• Only links can navigate to external URLs.

Answer explanation

Users can interact with the app by clicking or tapping Links and buttons. This triggers an action, sends data or navigates to another screen

Regarding the If widget, which of the following is false?

• Functions can be used within the Condition of an If.

• More branches can be added to an If widget.

• Only one of the branches is shown at run time.

• Several widgets can be added within each branch.

Answer explanation

Each If widget has only two branches: True and False

Regarding the Container widget, which of the following options is false?

• Containers allow you to group multiple widgets together.

• By default, containers can span 1 to 12 columns.

• Containers can be placed inside other containers.

• All containers must have at least one widget inside.

Answer explanation

They can be empty

Which of the following options is the correct?

• Screen actions can call up other screen actions on a different screen.

• Customer actions can call up screen actions.

• Server actions can call client actions.

• Client actions can call server actions.

Answer explanation

Likewise, the actions on the screen can also call up the server's actions

Client actions and server actions can have the following variables:

• Input and output parameters, but without local variables.

• Input parameters and local variables, but no output parameters.

• Input and output parameters, as well as local variables.

• Output parameters and local variables, but no input parameters.

Answer explanation

They can have multiple inputs, outputs and local variables

The flow of an action can have ...

• Several start and end nodes.

• One or more initial nodes, but only one final node.

• Only one start node, but several end nodes.

• Just a start node and an end node.

Answer explanation

Action flows can have only one start node and can end at different end nodes

If we have multiple exception handlers in an action flow and an exception is raised ...

• Execution is always moved to the Global Exception Handler.

• Execution is moved to the Exception Handler which is more specific to the Exception.

• Execution is moved to all Handlers except for the action.

• A Switch statement is required to select which Exception Handler will continue to run.

Answer explanation

Different exceptions are handled by different specific handlers.