What type of variables can be created inside a Screen?

C. Input Parameters and Local Variables.

D. Input Parameters, Output Parameters, and Local Variables.

In an Aggregate, the purpose of the Test Values section is…

A. To define values for testing the preview of the Aggregate's output.

B. To set the conditions to get specific records, not all the records.

C. To define the order of its output records.

D. To define the Entities we want to get records from.

The flow of an action can have...

C. ... only one Start node but multiple End nodes.

A. ... multiple Start and End nodes.

B. ... one or more Start nodes but only one End node.

D. ... only one Start node and one End node.

In an Aggregate, the Sources section is used for...

B. Defining the Entities we want to retrieve records from.

A. Defining values for testing the Aggregate's output records.

C. Defining conditions to get specific subsets of records.

D. Defining the order of the Aggregate's output records.

How is the data fetched by an Aggregate bound to a Table or a List widget?

A. By setting the Source property of the widget to the output of the Aggregate.

B. The binding is done automatically since the Aggregate is in the scope of the Screen.

C. By adding an Expression inside the widget that refers to an attribute of the data fetched by the Aggregate.

D. By creating a Screen Action that programmatically assigns the widget to the data fetched by the Aggregate.

Regarding data relationships, which of the following options is correct?

A. An Entity must have an identifier to allow relationships.

B. A reference attribute needs to be mandatory.

C. An Entity can only have one reference attribute.

D. The Entity identifier must be an integer.

Which of the following steps is necessary to create a many-to-many relationship between Entity A and Entity B?

C. Add a new Entity C, with two reference attributes of type Entity A Identifier and Entity B Identifier.

A. Set the data type of the identifier attribute of Entity B to Entity A Identifier.

B. Add a new reference attribute of type Entity B Identifier to Entity A.

D. Add a new reference attribute of type Entity B Identifier to Entity A and a new reference attribute of type Entity A Identifier to Entity B.

Which of the following behaviors does not apply to Forms?

B. A Form has a Source property that will hold the values submitted by the user.

A. A Form groups input widgets and allows displaying and editing data.

C. Besides input widgets, a Form can hold other widgets such as Links and Buttons.

D. A Form is useful to validate data submitted by the user.

Considering Inputs and Labels, which of the following options is correct?

D. Labels associated with mandatory fields will display a visual cue on the Screen.

A. Every input must have a Label associated with.

B. An input widget can only be used for the Text data type.

C. To access the value submitted in an Input widget, we can simply use InputName.Value.

Regarding Mobile (Phone or Tablet) Apps in OutSystems, which of the following options is false?

C. Mobile Apps do not have offline capabilities.

A. Mobile Apps can run natively on iOS and Android.

B. Mobile Apps can be distributed as a PWA.

D. The programming model of Mobile Apps is similar to Reactive Web Apps.

Which of the following options is not a built-in validation in OutSystems?

B. Maximum length of text fields

Regarding sorting in a Table, which of the following options is correct?

C. The On Sort event has an input parameter containing the clicked column.

A. All header cells need to have the Sort Attribute property defined.

B. Only the Sort Attribute of the header cells needs to be defined. Data is refreshed automatically.

If we have multiple Exception Handlers in an Action flow and an Exception is raised...

B. ... the execution is moved to the Exception Handler that is most specific to the Exception.

A. ... the execution is always moved to the Global Exception Handler.

C. ... the execution is moved to all Exception Handlers of the Action.

D. ... a Switch statement is needed to select which Exception Handler will continue the execution.

Regarding non-SELECT queries, which of the following options is correct?

D. It is mandatory to set the Output Entity or Structure.

A. It is not possible to execute DELETE queries with the SQL Tool.

B. It is not possible to use Query Parameters in Non-SELECT queries.

C. It is mandatory to specify all Attributes in an INSERT query.

Consider that we want to apply aggregation functions in an Aggregate. Which of the following options is false?

B. The output of the Aggregate will contain all attributes from the Source Entities plus the aggregation columns.

A. We can apply multiple aggregation functions inside an Aggregate.

C. We can apply the following functions on attributes of integer data type: sum, max, min, count and average.

D. The output of the Aggregate will not include the columns at grey.

Which of the following options is false regarding Screen Aggregates?

C. All Aggregates, by default, have the Fetch property set to On Demand.

A. The Render Event on the Screen is triggered when an Aggregate with the Fetch property set to "only on demand" finishes its execution.

B. A Screen Aggregate can be triggered when a screen is initializing or only On Demand.

D. The On After Fetch Event is triggered for every Aggregate, regardless of its Fetch property.

Regarding Placeholders, which of the following options is correct?

A. A Placeholder reserves space in the interface to be allocated when the block is instantiated.

B. When a Block with Placeholders is instantiated, it is mandatory to place at least one widget inside the placeholders.

C. Placeholders can be added to Screens and Blocks.

D. Only one placeholder may be added per Block.

Consider an Aggregate with a "With or Without" join between two entities. What is the expected output of the Aggregate?

C. All records from the left entity even if there is no match in the right entity (LEFT JOIN).

A. All records from both Entities (FULL OUTER JOIN).

B. Only records where there is a match between the two Entities (INNER JOIN).

D. All records from the right entity even if there is no match in the left entity (RIGHT JOIN).

Considering the built-in Role Actions, which of the following options is false?

D. The CreateUserWithRole Action creates an end-user and assigns it the Role.

A. The CheckRole Action checks if a user has that particular Role.

B. The GrantRole Action allows to grant a Role to a user programmatically.

C. The RevokeRole Action allows to remove a Role from a user programmatically.

EN-Quiz 3 : Becoming a Reactive Web Developer

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Elton Olortegui

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

In which Service Studio layer can Screens and Blocks be found?

A. Processes

B. Interface

C. Logic

D. Data

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