Salesforce PD2 - Review 1

A Visualforce page loads slowly due to the large amount of data it displays

Which strategy can a developer use to improve the performance?

• Use the transient keyword for the List variables used in the custom controller.

• Use JavaScript to move data processing to the browser instead of the controller.

• Use an <apex:actionPoller> in the page to load all of the data asynchronously.

• Use lazy loading to load the data on demand, instead of in the controller's contructor.

After a Platform Event is defined in a Salesforce org, events can be published via which two mechanisms ?

Choose 2 answers

• Internal Apps can use Outbound Messages

• Internal Apps can use Process Builder

• External Apps require the standard Streaming API.

• External Apps use an API to publish event messages.

A lead developer for a Salesforce organization needs to develop a page-centric application that allows the user to interact with multiple objects related to a Contact. The application needs to implement a third-party JavaScript framework such as Angular, and must be made available in both Classic and Lightning Experience.
Given these requirements, what is the recommended solution to develop the application ?

• Aura Components

• Lightning Web Components

• Visualforce

• Lightning Experience Builder

Universal Containers wants to use an external Web Service provided by a third-party vendor to validate the shipping and billing addresses are correct. The current vendor uses basic password authentication, but Universal Containers might switch to a different vendor who uses OAuth.
Which approach follows best practices and allows Universal Containers to switch vendors without updating the code to handle authentication?

• Custom Setting (List)

• Named Credential

• Custom Metadata

• Dynamic Endpoint

Which code statement includes an Apex method named updateAccounts in the class AccountController for use in a Lightning Web component?

• import updateAccounts from '@salesforce/apex/AccountController';

• import updateAccounts from 'AccountController';

• import updateAccounts from 'AccountController.updateAccounts';

• import updateAccounts from '@salesforce/apex/AccountController.updateAccounts';

Which statement is considered a best practice for writing bulk safe Apex Triggers?

• Add records to collections and perform DML operations against these collections.

• Perform all DML operations from within a Future Method.

• Instead of DML statements, use the Database methods with allOrNone set to False.

• Add LIMIT 50000 to every SOQL statement,

Universal Containers has an existing automation where a custom record called Account Plan is created upon an Account being marked as a Customer. Recently, a Workflow Rule was added so that whenever an Account is marked as a Customer, a 'Customer Since' date field is update with today's date.

Now, since the addition of the Workflow Rule, two Account Plan records are created whenever the Account is marked as a Customer.

What might cause this to happen ?

• The Apex Trigger responsible for the record creation does not use a static variable to ensure it only fires once.

• The Process Builder responsible for the record creation fires before and after the Workflow rule.

• The Workflow Rule responsible for the record creation fires twice because the 'Customer Since' field Update is marked as 'Re-evaluate Workflow Rules After Field Change'.

• The Apex Trigger responsible for the record creation is not bulk safe and calls Insert of a for loop

What is the best practice to initialize a Visualforce page in test class?

• Use Test.currentPage.getParameters.put(MyTestPage);

• Use Test.setCurrrentPage(Page.MyTestPage);

• Use Test.setCurrentPage.MyTestPage;

• Use controller.currentPage.setPage(MyTestPage);

A company has a custom object, Order__c, that has a custom picklist field, Status__c, with values of 'New', 'In Progress', or 'Fulfilled' and a lookup field, Contact__c, to Contact.

Which SOQL query will return a unique list of all Contact records that have no 'Fulfilled' Orders?

• SELECT Contact__c FROM Order__c WHERE Id NOT IN (SELECT Id FFROM Order__c WHERE Status__c = 'Fulfilled')

• SELECT Contact__c FROM Order__c WHERE Status__c <> 'Fulfilled'

• SELECT Id FROM Contact WHERE Id NOT IN (SELECT Id FROM Order__c WHERE Status__c = 'Fulfilled' )

• SELECT Id FROM Contact WHERE Id NOT IN (SELECT Contact__c FROM Order__C WHERE Status__c = 'Fulfilled' )

A developer is writing a Visualforce page that queries accounts in the system and presents a data table with the results. The users wants to be able to filter the results based on up to five fields. However, the users want to pick the five fields to use as filter fields when they run the page.

Which Apex code feature is required to facilitate this solution?

• SOSL queries

• Report API

• Dynamic Schema binding

• describeSObjects()