Salesforce PDI Salesforce Certified Platform Developer I (SU24) Exam Practice Test

To ensure that the component works for both users without showing errors due to field-level security, the developer should handle field accessibility programmatically.

Option D: Use Security.stripInaccessible to remove fields inaccessible to the current user.

Correct Answer.

Explanation:

The Security.stripInaccessible method can be used in Apex to remove fields from SObjects that the current user doesn't have access to.

When data is fetched using SOQL, the method can be applied to ensure that inaccessible fields are not included, preventing any security exceptions when the component tries to display them.

This method enforces field-level security and prevents exposure of inaccessible data.

Usage:

// Apex Controller

public with sharing class SalesRecordsController {

@AuraEnabled(cacheable=true)

public static List getSalesRecords() {

List records = [SELECT Id, Name, Commission__c, Other_Field__c FROM Sales_Record__c];

return (List) Security.stripInaccessible(AccessType.READABLE, records);

}

}

To calculate the sum of all Order Line item totals on the Order record in a master-detail relationship, the best practice is to use a Roll-up Summary Field.

Roll-up Summary Field: This field type allows you to perform calculations on a set of related records, such as summing up the total price of all Order Line items related to an Order.

"Roll-up summary fields allow you to display a value in a master record based on the values of fields in a detail record."— Salesforce Help: Define Roll-Up Summary Fields

Master-Detail Relationship: Since Order Line items are in a master-detail relationship with Orders, roll-up summary fields can be created on the master object (Order) to summarize data from the detail object (Order Line).

"You can create roll-up summary fields on any custom object that is on the master side of a master-detail relationship."— Salesforce Developer Guide: Roll-Up Summary Fields

Why Not Other Options:

A. Quick Action: Quick actions are used to create records, log calls, send emails, etc., and are not suitable for calculating and displaying aggregate data.

B. Apex Trigger: While triggers can perform the calculation, using them for this purpose is not considered best practice when declarative solutions like roll-up summary fields are available.

"Use declarative functionality (roll-up summary fields) for maintaining aggregates instead of triggers."— Salesforce Developer Guide: Best Practices for Triggers

D. Formula Field: Formula fields cannot aggregate data from child records to parent records unless they are part of a roll-up summary field in a master-detail relationship.

Conclusion: Using a roll-up summary field is the most efficient and recommended approach to sum the total prices of all Order Line items on the Order record.

When using Lightning Data Service (LDS) in a Lightning Web Component (LWC), it's important to understand how data security is handled.

Option D: Lightning Data Service handles sharing rules and field-level security.

Correct Statement.

Explanation:

Lightning Data Service enforces all the security and sharing rules that are in place in the Salesforce org.

This includes object-level, field-level, and record-level security.

When a component uses LDS to access data, the framework ensures that the user only sees data they have access to.

Benefits:

Simplifies development by abstracting security checks.

Ensures compliance with organizational security policies.

When deploying Apex code to a production environment, certain requirements must be met regarding test coverage and annotations.

Option B: Apex classes must have at least 75% code coverage org-wide.

Correct Requirement.

Explanation:

Salesforce requires that all Apex classes and triggers have a combined code coverage of at least 75% before deployment to production.

This means that, across all Apex code in the org, at least 75% of the code must be covered by test methods.

There are several ways to execute tests in a Salesforce org:

Option A: Setup Menu

Valid Method.

Explanation:

Tests can be run from the Salesforce Setup menu under Apex Test Execution.

Allows selecting and running test classes and methods.

When deploying Apex code to production, the following considerations are required:

Option B: All triggers must have at least one line of test coverage.

Explanation:

Salesforce mandates that every trigger has some test coverage.

Option C: Handle low-level events in the event handler and re-fire them as higher-level events.

True.

Explanation:

It's a best practice to encapsulate lower-level events and re-emit them as higher-level, application-specific events to decouple components and simplify event handling.

Understanding the Scenario:

Trigger Definition:

trigger myTrigger on Contact (before insert) {

MyClass.myStaticMethod(trigger.new);

}

Test Class:

The test method calls MyClass.myStaticMethod directly.

Achieves 81% overall code coverage.

The trigger is not invoked during the test.

Key Points:

Code Coverage Requirements:

Minimum 75% Coverage: To deploy Apex code to production, all Apex classes and triggers must have at least 75% overall code coverage.

Trigger Coverage Requirement: All triggers must have some code coverage, meaning they cannot have 0% coverage.

The first step in the Salesforce order of execution:

Option D: The original record is loaded from the database.

This is Step 1 in the order of execution.

Why Not Other Options:

Option A: Overwriting old values happens after loading the record.

Option B: JavaScript validation occurs on the client side before server processing.

Option C: System validation for field lengths happens after loading the record.

References:

Order of Execution:

"1. Loads the original record from the database or initializes the record for an upsert statement."— Apex Developer Guide: Triggers and Order of Execution

To check the code coverage of a class after running all tests, a developer can use the Developer Console.

Option B: View the code coverage percentage for the class using the Overall Code Coverage panel in the Developer Console Tests tab.

Correct Method.

Explanation:

In the Developer Console, navigate to the Tests tab.

After running tests, the Overall Code Coverage panel displays code coverage statistics.

You can see the coverage percentage for individual classes.

When using purely declarative development to build the business logic layer in Salesforce, the following options are available:

Option A: Validation Rules

Explanation: Validation rules are declarative tools that enforce business rules on record data entry, ensuring data integrity.

Option B: Use an Assignment Flow element.

Correct Answer.

Explanation:

Using a record-triggered flow, you can automatically assign new cases based on the case origin.

Flows provide flexibility to set field values, assign records, and automate complex logic without code.

To troubleshoot query performance issues:

Option B: Developer Console

Explanation: The Developer Console provides tools like the Query Plan to analyze SOQL queries for performance.

Using Query Plan Tool:

Open Developer Console.

Go to the Query Editor.

Enter your SOQL query.

Click on "Explain" to see the query plan.

Option A: Data Import Wizard does not support Opportunities.

Explanation: The Data Import Wizard supports importing data for certain standard objects (Accounts, Contacts, Leads, Solutions, Campaign Members, and Person Accounts) and custom objects. It does not support importing data into all standard objects like Opportunities.

In the Aura framework, application events propagate through the component hierarchy in specific phases. The two main phases are:

Option A: Bubble

Correct Phase.

Explanation:

In the bubble phase, the event propagates upward from the source component to the root component.

Components can handle the event during this phase by registering an event handler with phase="bubble".

Option D: Use Test.getStandardPricebookId() to get the standard price book ID.

Correct Answer.

Explanation:

The Test.getStandardPricebookId() method returns the ID of the standard price book, which can be used in test classes without using SeeAllData=true.

This allows the test to access and use the standard price book in a controlled manner.

Option A: Developer and Developer Pro sandboxes have different storage limits.

True.

Explanation:

Developer Sandbox:

Provides 200 MB of data storage and 200 MB of file storage.

Developer Pro Sandbox:

Provides 1 GB of data storage and 1 GB of file storage.

The storage limits affect how much data you can import into these environments.

Option A: An External ID field can be used to reference an ID from another external system.

True.

Explanation:

External IDs are custom fields that have the External ID attribute selected.

They are used to store unique identifiers from external systems, allowing Salesforce to match and integrate data based on external IDs.

Option A: Roll-up summary fields can cause the parent record to go through Save.

True.

When a child record changes, roll-up summary fields on the parent object are recalculated.

This causes the parent record to save, which can trigger triggers on the parent object.

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.

Explanation: When dispatching a custom event in LWC, you can pass data using the detail property of the event. This allows the parent component to access any data emitted by the child component.

// Child component JavaScript

const myEvent = new CustomEvent('myevent', {

detail: { data: 'Some data' }

});

this.dispatchEvent(myEvent);

Universal Containers (UC) wants to calculate the estimated ship date for an Order, which should be the date when all Order Line Items are available. The availability date is stored on each Order Line Item.

Given that the relationship between Order and Order Line Item is Master-Detail, we can leverage Roll-Up Summary Fields to perform calculations on the child records (Order Line Items) and summarize them on the parent record (Order).

Option A: Use a MAX Roll-Up Summary field on the latest availability date fields.

Correct Approach.

Explanation:

Create a Roll-Up Summary Field on the Order object.

Use the MAX function to calculate the latest availability date among all related Order Line Items.

The Roll-Up Summary Field will display the maximum (latest) availability date, which represents the date when all items are available.

This date can be used as the estimated ship date for the Order since the Order can only be shipped when all items are available.

Benefits:

Declarative Solution: No code required.

Real-Time Calculation: Automatically updates when Order Line Items change.

Using Database.insert with allOrNone=false allows partial success in DML operations.

Option D: Use the Database method with allOrNone set to false.

Records that cause errors are not inserted.

Successful records are committed.

Prevents the entire batch from failing.

Why Not Other Options:

Option A: Deactivating the trigger is not practical.

Option B: Removing the class from the profile may cause other issues.

Option C: A try-catch block won't prevent the batch from failing.

References:

Database Methods:

"Use the Database DML methods to specify whether or not to allow partial record processing."— Apex Developer Guide: Using the Database Class

When using the @InvocableMethod annotation in Apex, there are specific considerations to keep in mind:

Option A: Only one method using the @InvocableMethod annotation can be defined per Apex class.

True.

Explanation:

An Apex class can contain only one method annotated with @InvocableMethod.

This ensures that when the class is invoked from a flow or process, there is no ambiguity about which method to execute.

Declarative Development refers to building applications using Salesforce's point-and-click tools without writing code. It has several characteristics:

Option C: Declarative development does not require Apex test classes.

True.

Declarative tools like Flows, Process Builder, and Validation Rules do not require Apex test classes because they are configured via the UI and not through code.

To override the Account's standard Edit button in Lightning Experience:

Option A: Lightning component

Explanation: In Lightning Experience, you can override standard buttons with Lightning components by implementing the appropriate interface.

Implementation:

The Lightning component must implement lightning:actionOverride interface.

Scratch Orgs are disposable Salesforce orgs that can be created quickly and configured with different features and settings. They are ideal for source-driven development and allow developers to work independently.

Option D: Scratch orgs

Correct Answer.

Scratch orgs support source-driven development and can be fully configured through scripts and the Salesforce CLI.

Developers can create and destroy scratch orgs as needed, ensuring they have isolated environments.

Option A:

String query = 'SELECT Id FROM Account WHERE Name LIKE \'%' + String.escapeSingleQuotes(name) + '%\'';

List results = Database.query(query);

Explanation: This option uses String.escapeSingleQuotes(name) to sanitize the name variable. This method escapes any single quotes in the input, preventing malicious input from breaking out of the string context in the SOQL query.

Understanding the Code:

for (Integer i = 0 ; i < 500; i++) {

Account a = new Account (Name='New Account ' + i);

insert a;

}

What the Code Does:

Loops from i = 0 to i = 499 (total of 500 iterations).

In each iteration:

Creates a new Account record with the name 'New Account ' + i.

Performs an insert DML operation for each account.

Salesforce Governor Limits:

DML Statements Limit:

Maximum of 150 DML statements per Apex transaction.

To notify the parent component from a child component when a button is clicked:

Option C: Create a custom event

Explanation: In Lightning Web Components, child components communicate with parent components by dispatching custom events.

Child Component:

// ChildComponent.js

handleClick() {

const nextEvent = new CustomEvent('next');

this.dispatchEvent(nextEvent);

}

Parent Component:

javascript

Copy code

// ParentComponent.js

handleNext() {

// Navigate to the next page

}

To associate multiple Engineering_Support__c records to a single Opportunity and display aggregate information on the Opportunity:

Option B: Master-detail field from Engineering_Support__c to Opportunity

Explanation:

Master-Detail Relationship: Creating a master-detail relationship from Engineering_Support__c (detail) to Opportunity (master) allows multiple support records to be related to one Opportunity.

Aggregate Information: Master-detail relationships support roll-up summary fields, enabling aggregate calculations (like COUNT, SUM) on the Opportunity object based on related Engineering_Support__c records.

To find the current user's default record type for Opportunity, the developer can use the DescribeSObjectResult and RecordTypeInfo classes.

Option A: Use Opportunity.SObjectType.getDescribe().getRecordTypeInfos() to get a list of record types, and iterate through them until isDefaultRecordTypeMapping() is true.

Correct Approach.

Explanation:

// Get describe result for Opportunity

Schema.DescribeSObjectResult oppDescribe = Opportunity.SObjectType.getDescribe();

// Get list of RecordTypeInfo

List recordTypeInfos = oppDescribe.getRecordTypeInfos();

// Iterate through RecordTypeInfo to find the default one

Id defaultRecordTypeId;

for (Schema.RecordTypeInfo rtInfo : recordTypeInfos) {

if (rtInfo.isAvailable() && rtInfo.isDefaultRecordTypeMapping()) {

defaultRecordTypeId = rtInfo.getRecordTypeId();

break;

}

}

In Salesforce, triggers are executed in response to specific database events on standard objects (such as Account or Contact) and custom objects. The following actions can cause triggers to fire:

Option A: Cascading delete operations

Explanation: When a record is deleted, and it has child records in a master-detail relationship, the child records are automatically deleted (cascade delete). This action fires the before delete and after delete triggers on the child records.

To add an additional layer of validation for email addresses on Lead records by using automation and possibly an external validation service, the best solution is to use a custom Lightning Web Component (LWC).

Option C: Use a custom Lightning Web Component to make a callout to validate the fields on a third-party system

Real-Time Validation: An LWC can perform client-side validation and make callouts to external systems to validate the email address as the user inputs data.

User Experience: Provides immediate feedback to the user, improving data quality at the point of entry.

Limitations: This solution works when data is entered through the UI using the LWC component.

The Lightning Component framework provides:

Option A: Prebuilt components that can be reused

Explanation:

The framework includes a library of base components that developers can use to build custom components and applications.

These components can be reused and combined to create complex UIs.

When multiple triggers are associated with the same object and event, Salesforce does not guarantee the order in which they will execute.

Option D: Trigger execution order cannot be guaranteed.

Correct Answer.

Explanation:

Salesforce does not provide a mechanism to define or guarantee the execution order of triggers on the same object and event.

If order is important, developers should combine the logic into a single trigger or use trigger frameworks that manage execution order.

When writing tests for Apex code that performs callouts to external services, Salesforce requires that callouts are mocked to ensure that tests do not depend on external systems and to allow for consistent and predictable test results.

Correct Option:

Option D: Write a class that implements HttpCalloutMock.

True.

Explanation:

To test HTTP callouts, you implement the HttpCalloutMock interface and provide a fake response for the HTTP request.

This mock response is then used in your test methods to simulate the callout.

The test method uses Test.setMock to set the mock class.

Change Sets are a point-and-click tool for migrating metadata between related Salesforce orgs, such as from a sandbox to a production org.

Option C: Deployment is done in a one-way, single transaction.

Correct.

Explanation:

Change sets are deployed in a one-way direction from the source org to the destination org.

The deployment occurs in a single transaction. If any component fails to deploy, the entire deployment is rolled back.

Lightning Web Components (LWC) can access various Salesforce resources.

Option B: SVG resources

Accessible.

Explanation:

LWCs can include SVG files to define custom icons for the component.

The SVG file is placed in the component bundle with the name componentName.svg.