SALESFORCE-PD1 Practice Test 32 — 15 Questions

Question 1

A developer is creating a Visualforce page that overrides the standard Account View action. Which attribute must be included in the <apex:page> tag to ensure standard controller functionality?

Accepted Answer

standardController="Account". The standardController attribute binds a Visualforce page to a standard Salesforce object.

Answer

controller="Account"

Answer

object="Account"

Answer

recordId="Account"

Question 2

A developer is writing an Aura component and needs to handle an event fired by a child component. Which attribute is required in the aura:handler tag on the parent component?

Accepted Answer

event. The event attribute on aura:handler specifies the event name to handle.

Answer

name

Answer

method

Answer

controller

Question 3

What is the maximum number of view state bytes allowed in a Visualforce page before Salesforce throws an error?

Accepted Answer

172 KB. The maximum view state limit for a Visualforce page is 172 KB.

Answer

1 MB

Answer

64 KB

Answer

512 KB

Question 4

Which THREE factors influence deployment success?

Accepted Answer

Profile/Permission Set permissions.. Tests, dependencies, and profile permissions are critical.

Answer

The number of users.

Answer

The color of the UI.

Question 5

A developer is writing a custom wire adapter or working with custom data in LWC and needs to manually provision data or force a refresh of wire data. Which function should be imported from lightning/uiRecordApi or related wire modules?

Accepted Answer

refreshApex. refreshApex is used to imperatively refresh data provisioned by an Apex wire adapter.

Answer

reloadRecord

Answer

updateRecordCache

Answer

getRecordRefresh

Question 6

Which annotation must be used on an Apex method to make it available for use with the @wire service in a Lightning Web Component?

Accepted Answer

@AuraEnabled(cacheable=true). Apex methods must be annotated with @AuraEnabled(cacheable=true) to be usable with @wire.

Answer

@RemoteAction

Answer

@InvocableMethod

Answer

@AuraEnabled

Question 7

Which base Lightning component is used to show a progress indicator or spinner in LWC?

Accepted Answer

lightning-spinner. lightning-spinner is the standard component for loading spinners in LWC.

Answer

ui:spinner

Answer

apex:spinner

Answer

lightning-progress

Question 8

Which TWO methods can be used to navigate to a standard Salesforce object's home page from a Lightning Web Component? Choose 2 answers.

Accepted Answer

Using NavigationMixin.Navigate with type 'standard__objectPage' and actionName 'home'.. NavigationMixin with standard__objectPage and actionName 'home' navigates to an object's home page.

Answer

Using force:navigateToSObject Aura event.

Answer

Using window.location.assign() with hardcoded Salesforce URLs.

Answer

Using lightning/uiRecordApi navigation methods.

Question 9

Which lifecycle hook in a Lightning Web Component runs after every render of the component?

Accepted Answer

renderedCallback(). renderedCallback() is called after every render of the component, useful for post-rendering DOM manipulation.

Answer

constructor()

Answer

connectedCallback()

Answer

render()

Question 10

A developer is implementing communication in Lightning Web Components. Which TWO mechanisms are valid for passing data or messages between components? (Choose TWO)

Accepted Answer

Dispatching and listening to CustomEvent instances in parent-child hierarchies.. Custom events (child to parent) and Lightning Message Service (unrelated components) are standard mechanisms.

Answer

Directly assigning properties on child components from sibling components.

Answer

Using application events via $A.get('e.force:event') in LWC.

Answer

Modifying global window variables shared across component scopes.

Question 11

What is the primary purpose of the 'System.debug()' statement?

Accepted Answer

To write information to the debug log. System.debug() writes information to the debug log to help developers diagnose execution flow and variable states.

Answer

To display an error to the end user

Answer

To stop the execution of the code

Answer

To log an audit trail of configuration changes

Question 12

Which THREE of the following items can be viewed in a debug log?

Accepted Answer

Database DML operations. Debug logs track database actions, Apex code, and workflow execution.

Answer

User login credentials

Answer

Browser cache contents

Question 13

A developer is implementing a Lightning Web Component that handles drag-and-drop functionality. Which native DOM event is typically intercepted to allow a drop action on an element?

Accepted Answer

dragover and preventDefault(). Preventing default on dragover is required to allow a drop event to fire on an element.

Answer

dragstart

Answer

dropstart

Answer

mousedown

Question 14

A developer is building a Lightning Web Component that includes a custom wire adapter to fetch custom metadata. The wire adapter needs to react whenever a tracked property changes value. How should the developer wire the property?

Accepted Answer

Prefix the parameter passed to the wire adapter with a dollar sign ($) in the JavaScript file.. Wire adapters automatically provision data when reactive parameters (prefixed with $) change.

Answer

Wrap the property in a standard JavaScript Proxy object.

Answer

Decorate the parameter with @track and call this.updateWire() explicitly.

Answer

Invoke the refreshApex() method inside the component constructor.

Question 15

A developer creates a parent Lightning Web Component containing a child component. The parent needs to call a public method defined inside the child component. How is this accomplished?

Accepted Answer

Use this.template.querySelector('c-child-component').publicMethodName() in the parent component.. A parent component can invoke a public method on a child component by querying the child element and calling the method directly.

Answer

Use the publish() method of the Lightning Message Service.

Answer

Update a shared reactive property passed down via @api.

Answer

Dispatch an event from the parent and listen to it in the child component.