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Salesforce Certified Platform Developer II - Multiple Choice Sample Questions (Q117-Q122):

NEW QUESTION # 117
How can a developer efficiently incorporate multiple JavaScript libraries in an Aura component?

A. Use CDNs with script attributes.
B. Use JavaScript remoting and script tags.
C. Join multiple assets from a static resource.
D. Implement the libraries in separate helper files.

Answer: C

Explanation:
For incorporating multiple JavaScript libraries in Aura components, the best practice is to join multiple assets into a single static resource. This approach is efficient and avoids issues with asynchronous loading and potential conflicts between libraries. Aura Components Developer Guide - Using External JavaScript Libraries

NEW QUESTION # 118
A developer is inserting, updating, and deleting multiple lists of records in a single transaction and wants to ensure that any error prevents all execution.
How should the developer implement error exception handling in their code to handle this?

A. Use Database.setSavepoint {} and Database.rollBack with a try-catch statement.
B. Use Database methods to obtain lists of Database.SaveResults.
C. Use a try-catch statement and handle DML cleanup in the catch statement,
D. Use a try-catch and use sObject.addError() on any failures.

Answer: A

Explanation:
Using Database.setSavepoint() and Database.rollback() within a try-catch statement is the recommended approach for handling transactions that involve multiple DML operations. This allows the developer to roll back all changes if an error occurs, ensuring that partial changes are not committed to the database.

NEW QUESTION # 119
Universal Containers uses Big Objects to store almost a billion customer transactions called Customer_Transaction__b.
These are the fields on Customer_Transaction__b:
Account__c -
Program__c -
Points_Earned__c -
Location__c -
Transaction_Date__c -
The following fields have been identified as Index Fields for the Customer_Transaction__b object: Account__c, Program__c, and Transaction_Date__c.
Which SOQL query is valid on the Customer_Transaction__b Big Object?

A. SELECT Account__c, Program__c, Transaction_Date__c FROM Customer_Transaction__b WHERE Account__c = '001R000000302D3' AND Program__c EXCLUDES ('Shoppers', 'Womens') AND Transaction_Date__c=2019-05-31T00:00Z
B. SELECT Account__c, Program__c, Transaction_Date__c FROM Customer_Transaction__b WHERE Account__c = '001R000000302D3' AND Program__c LIKE 'Shop%' AND Transaction_Date__c=2019-05-31T00:00Z
C. SELECT Account__c, Program__c, Transaction_Date__c FROM Customer_Transaction__b WHERE Account__c = '001R000000302D3' AND Program__c INCLUDES ('Shoppers', 'Womens') AND Transaction_Date__c=2019-05-31T00:00Z
D. SELECT Account__c, Program__c, Transaction_Date__c FROM Customer_Transaction__b WHERE Account__c = '001R000000302D3' AND Program__c ='Shoppers' AND Transaction_Date__c=2019-05-31T00:00Z

Answer: D

Explanation:
The valid SOQL query on a Big Object must match the indexed fields exactly. Since Account__c, Program__c, and Transaction_Date__c are the indexed fields, the SOQL query must specify those fields exactly in the WHERE clause, including exact match conditions (no LIKE or INCLUDES).

NEW QUESTION # 120
A developer notices the execution of all the test methods in a class takes a long time to run, due to the initial setup of all the test data that is needed to perform the tests. What should the developer do to speed up test execution?

A. Reduce the amount of test methods in the class.
B. Define a method that creates test data and annotate with @testSetup.
C. Define a method that creates test data and annotate with @createData.
D. Ensure proper usage of test data factory in all test methods.

Answer: B

Explanation:
Using the @testSetup annotation to define a method that creates test data before the tests run can significantly speed up test execution by reducing the setup time for each test method in the class. This method runs once before any test method in the class and can be used by all test methods.

NEW QUESTION # 121
A Visualforce page contains an industry select list and displays a table of Accounts that have a matching value in their Industry field.

When a user changes the value in the industry select list, the table of Accounts should be automatically updated to show the Accounts associated with the selected industry, What is the optimal way to implement this?

A. Add an <apex:actionsupport> within the <apex:selectOptions>.
B. Add an <apex:actionsupport> within the <apex:selecList>.
C. Add an <apex:actionFunction> within the <apax:selecList>.
D. Add an <apex:actionFunction> within the <apex:selectOptions>.

Answer: B

Explanation:
The <apex:actionSupport> component is designed to be used with another component to provide AJAX support. When the value of the industry select list changes, the <apex:actionSupport> can trigger an AJAX request to the server, causing the page to rerender the table of Accounts with the matching industry. This process occurs without a full page refresh, providing a smoother user experience.
Visualforce Developer Guide

NEW QUESTION # 122
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