QUESTION: 117

Considering the On Initialize lifecycle event, which of the following options is true?

The On Initialize event is triggered before the Screen or Block is rendered and before fetching any data.
The On Initialize event is triggered after the Screen or Block has been rendered, so you can use it to manipulate its structure.
The On Initialize event is triggered after an Aggregate finishes fetching data and can be used to act upon the retrieved data before it's used in the Screen.
The On Initialize event is triggered after the input parameter of a Block changes.

Answer(s): A

The following Screen (https://drive.google.com/file/d/1gm2xpbBQmE- KTAHtCdj4wT0jNLnpDzZX/view?usp=sharing) has two Dropdowns, one to select a Country and one to select a City. The GetCountries and GetCities Aggregates provide the countries and the cities to be displayed in the respective dropdowns and are both set to be fetched At Start.
Which of the following options is not a valid step if we want to just fetch the cities for the country selected in the respective dropdown?

Set the Fetch property of the GetCities Aggregate to Only On Demand.
Refresh the GetCities Aggregate in the OnChange Action of the Country Dropdown.
Filter the GetCities Aggregate by the selected country.
Call the GetCities Aggregate in the GetCountries' On After Fetch Event handler.

Answer(s): D

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QUESTION: 119

Regarding Blocks in OutSystems reactive apps, which of the following options is correct?

Blocks can only be instantiated on Screens.
Blocks can be instantiated on Screens and other Blocks.
Blocks can be instantiated on Client Actions on the Screen.
Blocks can be instantiated on Screens and external HTML pages, using a special HTML tag.

Answer(s): B

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QUESTION: 120

Which of the following options is a valid usage of the Trigger Event node (https://drive.google.com/file/d/1R2cEa-XAB6XyZSbdHVbD8tVY_4E_h4ge/view?usp=sharing)?

The Trigger Event allows a Block to notify its parent (Screen or Block) that something relevant occurred in the scope of the Block.
The Trigger Event allows a Screen to notify its children (Blocks) that something relevant occurred in the scope of the Screen.
The Trigger Event allows a Block to notify its children (other Blocks) that something relevant occurred in the scope of the Block.
The Trigger Event allows a Screen to notify its parent (Screen or Block) that something relevant occurred in the scope of the Screen.

Answer(s): A

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Free Associate Reactive Developer (OutSystems 11)Exam Exam Braindumps (page: 31)

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