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Salesforce Certified Platform Developer I Sample Questions (Q32-Q37):

NEW QUESTION # 32
What are three capabilities of the <ltng : require> tag when loading JavaScript resources in Aura components?
Choose 3 answers

A. Specifying loading order
B. Loading scripts In parallel
C. One-time loading for duplicate scripts
D. Loading externally hosted scripts
E. Loading files from Documents

Answer: A,C,D

Explanation:
The <ltng : require> tag is a Lightning component that allows you to load external CSS and JavaScript libraries in your Aura components. The <ltng : require> tag has the following capabilities:
* One-time loading for duplicate scripts: The <ltng : require> tag ensures that the same script or style resource is loaded only once, even if it is specified in multiple <ltng : require> tags in the same component or across different components. This avoids unnecessary loading and potential conflicts.
* Specifying loading order: The <ltng : require> tag allows you to specify the order in which the scripts and styles are loaded, by using comma-separated lists in the scripts and styles attributes. The resources are loaded in the order you specify them, which is important for maintaining dependency order and avoiding errors.
* Loading externally hosted scripts: The <ltng : require> tag enables you to load scripts that are hosted on external servers, such as CDN or third-party services, by using the full URL of the script in the scripts attribute. This can be useful for accessing libraries that are not available as static resources in Salesforce.
References: ltng:require - documentation, Using External JavaScript Libraries, Prepare for Your Salesforce Platform Developer I Credential

NEW QUESTION # 33
Which two characteristics are true for Lightning Web Component custom events? Choose 2 answers

A. Data may be passed in the payload of a custom event using a property called detail.
B. Data may be passed in the payload of a custom event using @wire decorated properties.
C. By default a custom event only propagates to its immediate container.
D. By default a custom event only propagates to its immediate container and to its immediate child component.

Answer: A,C

Explanation:
In Lightning Web Components (LWC), custom events are used for communication between components. The two characteristics that are true for LWC custom events are:
Option A: Data may be passed in the payload of a custom event using a property called detail.
// Child component JavaScript
const myEvent = new CustomEvent('myevent', {
detail: { data: 'Some data' }
});
this.dispatchEvent(myEvent);
// To enable bubbling and composition
const myEvent = new CustomEvent('myevent', {
bubbles: true,
composed: true
});
this.dispatchEvent(myEvent);
Reference:
"The CustomEvent interface represents events initialized by an application for any purpose. You can pass data to the event handler using the detail property."
- Lightning Web Components Developer Guide: Communicate with Events
Option D: By default, a custom event only propagates to its immediate container.
"Custom events don't bubble or compose by default. To make an event bubble up through the DOM tree, set the bubbles parameter to true when creating the event."
- Lightning Web Components Developer Guide: Event Propagation
Incorrect Options:
Option B: Incorrect because by default, custom events do not propagate to child components or beyond the immediate container without setting bubbles and composed to true.
Option C: Incorrect because @wire is used for data binding and cannot be used to pass data in the payload of a custom event.

NEW QUESTION # 34
The Review_c object have a lookup relationship to the job_Application_c object. The job_Application_c object has a master detail relationship up to the position_c object. The relationship is based on the auto populated defaults?
What is the recommended way to display field data from the related Review _C records a Visualforce page for a single Position_c record? Select one of the following:

A. Utilize the Standard Controller for Position_c and a Controller Extension to query for Review_c data.
B. Utilize the Standard Controller for Position_c and cross-object Formula Fields on the Review_c object to display Review_c data.
C. Utilize the Standard Controller for Position_c and expression syntax in the Page to display related Review_c through the Job_Applicacion_c inject.
D. Utilize the Standard Controller for Position_c and cross-object Formula Fields on the Job_Application_c object to display Review_c data.

Answer: A

NEW QUESTION # 35
Universal Containers decides to use exclusively declarative development to build out a new Salesforce application. Which three options should be used to build out the database layer for the application? Choose 3 answers

A. Roll-Up Summaries
B. Custom Objects and Fields
C. Triggers
D. Relationships
E. Flow

Answer: A,B,D

Explanation:
Declarative development is the process of creating applications using point-and-click tools and configuration settings, without writing code. To build out the database layer for a Salesforce application, declarative developers can use the following options:
* Roll-Up Summaries: These are fields that calculate values from related records, such as the total amount of closed opportunities for an account. Roll-up summaries can be created on master-detail or lookup relationships, and can use filters to specify which records to include in the calculation1.
* Relationships: These are the links between objects that allow data to be shared and accessed across different objects. There are two types of relationships: master-detail and lookup. Master-detail relationships create a parent-child relationship between two objects, where the master record controls certain behaviors of the detail record, such as security and deletion. Lookup relationships create a loose association between two objects, where the lookup field can be optional or required, and the related record can have its own security and owner2.
* Custom Objects and Fields: These are the basic building blocks of any Salesforce application. Custom objects are the tables that store data specific to the organization or the application. Custom fields are the columns that store the attributes of each record in the object. Custom objects and fields can be created and modified using the Object Manager in Setup3.
References:
* 1: Define Roll-Up Summary Fields
* 2: Create Object Relationships
* 3: Create Custom Objects and Fields

NEW QUESTION # 36
A developer deployed a trigger to update the status__c of Assets related to an Account when the Account's status changes and a nightly integration that updates Accounts in bulk has started to fail with limit failures.

What should the developer change about the code to address the failure while still having the code update all of the Assets correctly?

A. Add List<asset> assets = [SELECT id, Status_ FROM WHERE AccountId = : acctId] to line 14 and iterate over the assets list in the for loop on line 15.;
B. Change the getAssetsToUpdate method to process all Accounts in one call and call it outside of the for loop that starts on line 03.
C. Add a LIMIT clause to the SOQL query on line 16 to limit the number of Assets queried for an Account.
D. Move all of the logic to a Queveable class that queries for and updates the Assets and call it from the trigger.

Answer: B

NEW QUESTION # 37
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