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PDI · Question #66

Which two are phases in the Aura application event propagation framework? Choose 2 answers

The correct answer is C. Default D. Bubble. The Aura application event propagation framework defines three phases for events to travel through the component hierarchy: Capture, Bubble, and Default.

Submitted by layla.eg· Apr 18, 2026User Interface

Question

Which two are phases in the Aura application event propagation framework? Choose 2 answers

Options

  • AEmit
  • BControl
  • CDefault
  • DBubble

How the community answered

(16 responses)
  • A
    6% (1)
  • B
    6% (1)
  • C
    88% (14)

Why each option

The Aura application event propagation framework defines three phases for events to travel through the component hierarchy: Capture, Bubble, and Default.

AEmit

'Emit' describes the action of firing an event, not a distinct propagation phase within the Aura event model.

BControl

'Control' is not a recognized propagation phase in the Aura application event framework; the standard phases are Capture, Bubble, and Default.

CDefaultCorrect

The Default phase is one of the three standard propagation phases for Aura application events, where event handlers for the event can execute after the Capture and Bubble phases, typically on the component that fired the event or its specific handlers.

DBubbleCorrect

The Bubble phase is a key propagation phase for Aura application events, where the event travels up the component hierarchy from the source component to the root, allowing intermediate components to handle it.

Concept tested: Aura application event propagation phases

Source: https://developer.salesforce.com/docs/component-library/documentation/en/aura/js_events_application_phases

Topics

#Aura Events#Event Propagation#Component Communication#Lightning Components

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