Understanding the Issue:

The provided code attempts to update a list of Account records:

public static void insertAccounts(List theseAccounts) {

for(Account thisAccount : theseAccounts) {

if(thisAccount.website == null) {

thisAccount.website = 'https://www.demo.com ';

}

}

update theseAccounts;

}

Problem: A DML exception is thrown when the update statement executes.

Possible Causes:

Some records in theseAccounts may have validation rule failures.

There may be null records within the theseAccounts list.

There could be fields that violate data integrity constraints.

Option Analysis:

Option A: Implement Change Data Capture

Explanation: Change Data Capture (CDC) is used to capture changes to Salesforce records and send notifications.

The Lightning Component framework is used to develop:

Option B: Lightning Pages

Explanation: Lightning Components can be used to build custom components that can be added to Lightning Pages, enhancing the Lightning Experience and Salesforce mobile app.

To update the flow to create a Contact and store the Contact’s ID on the Opportunity:

Option D: Add a new Create Records element.

Explanation: The flow needs to create a new Contact record using the Create Records element. After creating the Contact, you can store the Contact's ID in a variable and then update the Opportunity with the Contact’s ID.

Steps:

Add Create Records Element: Configure it to create a Contact and store the newly created Contact's ID in a variable.

Update Opportunity: Use the existing Update Records element or add a new one to update the Opportunity with the Contact's ID.

To improve runtime performance by caching Apex call results on the client, the developer should decorate the server-side method with @AuraEnabled(cacheable=true).

@AuraEnabled(cacheable=true) Annotation:

When applied to an Apex method, it enables the method's results to be cached on the client, improving performance for subsequent calls.

This is especially effective in Lightning Web Components (LWC) and can also be used in Aura components.

"To cache method results, annotate the method with @AuraEnabled(cacheable=true). Methods annotated with cacheable=true are called cached methods."— Lightning Web Components Developer Guide: Call Apex Methods

Why Not Other Options:

A. Call the setStorable() method on the action in the JavaScript client-side code: This approach is used in Aura components but is less efficient and not considered best practice compared to using cacheable=true.

"For improved performance, use @AuraEnabled(cacheable=true) instead of action.setStorable()."— Aura Components Developer Guide: Calling Server-Side Actions

B. Set a cookie in the browser for use upon return to the page: Managing cookies for caching Apex results is not efficient and can lead to security and scalability issues.

C. Decorate the server-side method with @AuraEnabled(storable=true): There is no storable=true parameter for @AuraEnabled. The correct parameter is cacheable=true.

Best Practices:

Use @AuraEnabled(cacheable=true): This is the recommended way to cache Apex method results in Lightning components.

"Apex methods annotated with @AuraEnabled(cacheable=true) are cached on the client and shared across components."— Lightning Web Components Developer Guide: Apex Methods Cache

Conclusion: By decorating the Apex method with @AuraEnabled(cacheable=true), the developer enables client-side caching of the method's results, improving runtime performance in an efficient and recommended way.

When using Salesforce DX, developers need to enable the Dev Hub in their org to create and manage scratch orgs.

Option A: Dev Hub

Correct Answer.

Explanation:

The Dev Hub is a feature that must be enabled in a Salesforce org (usually in a Developer Edition or a production org).

It allows developers to create and manage scratch orgs using Salesforce DX commands.

Dev Hub is the central point for creating and managing your scratch orgs.

To create a custom user interface component that allows users to enter information about their accounts and validate user input before saving, the best technology is:

Option A: Lightning Web Components

Lightning Web Components (LWC):

LWC is a modern UI framework built on web standards, providing efficient performance and a rich set of base components.

Input Validation:

LWCs support client-side validation using standard HTML5 validation and custom validation logic.

Developers can use JavaScript to validate user input before saving data to the database.

User Experience:

LWCs provide a responsive and interactive user experience, which is essential for data entry components.

To send Opportunity values via an HTTP REST callout when a user presses a custom button in Lightning Experience:

Option B: Create a custom Visualforce quick action

Explanation:

A Visualforce page with a custom controller can perform the callout.

The Visualforce page can be added as a quick action on the Opportunity page.

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.

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.

Trace Flags in Salesforce are used to set logging levels for various entities to debug and monitor execution. They can be configured for:

Apex Classes (Option C):

You can set a trace flag for a specific Apex class to monitor its execution and debug logs.

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.

To make a Lightning Web Component (LWC) available in Salesforce Classic, you can embed it in a Visualforce page using Lightning Out.

Option D: Use the Lightning Out JavaScript library to embed the Lightning Web Component in a Visualforce page and add to the page layout.

Lightning Out allows LWCs to be embedded in Visualforce pages.

The Visualforce page can then be included in Salesforce Classic interfaces.

Why Not Other Options:

Option A: Visualforce components cannot directly contain LWCs.

Option B: Wrapping an LWC in an Aura component and surfacing it as a Visualforce tab doesn't make it available on page layouts.

Option C: You cannot invoke an LWC from a Visualforce page using an Apex method call.

References:

Lightning Out for Visualforce:

"Lightning Out is a feature that extends Lightning components to any web page. Use it to embed Lightning web components in a Visualforce page."— Lightning Web Components Dev Guide: Use Lightning Web Components in Visualforce Pages

To enforce that only Container__c records with a status of "Decommissioned" can be deleted, we need to prevent deletion of records unless they meet this criteria.

Possible Approaches:

Option A: Apex Trigger

Correct.

Explanation:

An Apex before delete trigger can be written to check the Status__c field of each record being deleted.

If the status is not "Decommissioned," the trigger can add an error to prevent deletion.

trigger PreventContainerDeletion on Container__c (before delete) {

for (Container__c container : Trigger.old) {

if (container.Status__c != 'Decommissioned') {

container.addError('Only decommissioned containers can be deleted.');

}

}

}

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 updating a record of a junction object in Salesforce (an object used to create a many-to-many relationship), you must have the appropriate permissions.

Required Permissions:

Read/Write access on the junction object: To update the junction object record itself.

Read/Write access on both master (parent) records: Because the junction object is in two master-detail relationships, and its security settings are controlled by the parent records.

Given the options:

Option A: Read/Write access on the primary relationship

Option B: Read/Write access on the secondary relationship

These options correspond to having Read/Write access on both parent objects.

Supporting References:

Master-Detail Relationships:

Permissions Inheritance: The detail (junction) record inherits sharing and security settings from the master (parent) records.

Updating Records: To update a detail record, users must have Read/Write access to both the detail record and its parent records.

To test the trigger with 200 account records with unique names using the least amount of code:

Option A: Use Test.loadData to populate data in your test methods.

Explanation: Test.loadData allows you to load test data from a static resource (CSV file) into your test method. This approach minimizes code since you don't have to write code to create each record.

When building the database layer of a Salesforce application using exclusively declarative development, the following options are relevant:

Option A: Roll-up summaries

Valid Declarative Tool.

Explanation:

Roll-up summary fields allow calculations (SUM, COUNT, MIN, MAX) on child records in a master-detail relationship.

They are created declaratively.

To efficiently generate a baseline set of data for unit tests that can be shared across multiple test methods, you should:

Option A: Use @TestSetup with a void method.

@TestSetup Annotation:

The @TestSetup method runs once before any test methods in the test class and is used to create common test data.

Data created in @TestSetup is available to all test methods within the test class.

Example:

@IsTest

private class MyTestClass {

@TestSetup

static void setupData() {

// Create Accounts, Contacts, Products, Assets

// This data is available to all test methods

}

@IsTest

static void testCase1() {

// Test logic here

}

@IsTest

static void testCase2() {

// Test logic here

}

}

Option A: Specifying loading order

True.

Explanation:

The tag allows you to specify the order in which scripts are loaded by the sequence in the scripts attribute.

Since users can see Accounts they do not own in a private sharing model, the custom Apex code is likely not enforcing sharing rules. To enforce sharing permissions, the developer should use the with sharing keyword on the class declaration.

with sharing Keyword: This enforces the sharing rules of the current user, ensuring that the Apex class respects the user's record-level access permissions.

"Use the with sharing keyword when declaring a class to enforce the sharing rules that apply to the current user."— Apex Developer Guide: Using the with sharing or without sharing Keywords

Private Sharing Model: In a private sharing model, users should only see records they own or have been shared with them.

"Private: Only the record owner and users above that role in the hierarchy can view, edit, and report on those records."— Salesforce Help: Organization-Wide Sharing Defaults

Why Not Other Options:

A. Use the schema describe calls to determine if the logged-in user has access to the Account object: Schema describe calls check for object-level access, not record-level sharing.

"Schema describe information provides metadata about object and field properties, but it doesn't enforce record-level access."— Apex Developer Guide: Schema Namespace

C. Use the without sharing keyword on the class declaration: This runs the class in system context, ignoring sharing rules, which is the opposite of what's needed.

"Classes declared as without sharing or those that do not specify a keyword default to without sharing and don't enforce the sharing rules of the current user."— Apex Developer Guide: Using the with sharing or without sharing Keywords

D. Use the UserInfo Apex class to filter all SOQL queries to return records owned by the logged-in user: Manually filtering queries is error-prone and not a best practice when with sharing can enforce sharing automatically.

"Avoid hardcoding user or profile IDs and using the UserInfo class to enforce security. Instead, use declarative security features."— Apex Developer Guide: Enforcing Security in Apex

Conclusion: By declaring the class with with sharing, the Apex code respects the user's sharing rules, ensuring that users only see Accounts they have access to.

To expose an Apex class as a RESTful web service, you use the @RestResource annotation.

Option C: @RestResource(urlMapping='/myService/*')

@RestResource Annotation:

The @RestResource annotation is used to define an Apex class as a RESTful web service, specifying the URL mapping.

Methods within the class are annotated with @HttpGet, @HttpPost, @HttpPut, etc., to handle HTTP requests.

Example:

apex

Copy code

@RestResource(urlMapping='/myService/*')

global with sharing class MyRestService {

@HttpGet

global static String doGet() {

// Implementation

}

}

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".

When creating a Visualforce page that uses a standard controller and a controller extension for a custom object named Notice__c, the correct syntax is:

Option D: apex

standardController="Notice__c" extensions="myControllerExtension"

Correct Syntax.

standardController attribute specifies the standard controller for the custom object Notice__c.

extensions attribute specifies the name of the Apex class myControllerExtension that extends the functionality of the standard controller.

When designing a new application on the Salesforce platform that needs to support multiple tenants effectively (i.e., multiple customers or users), the developer should consider the Model-View-Controller (MVC) framework.

Option B: Model-View-Controller (MVC)

Correct Design Framework.

Explanation:

MVC is a software architectural pattern for implementing user interfaces.

Model: Represents the data and business logic.

View: Represents the presentation layer.

Controller: Handles user input and interactions.

Salesforce's platform follows the MVC pattern, which helps in separating concerns, ensuring scalability, and maintainability.

The recommended process for deploying code and configurations from a Sandbox to Production is to use a change set.

Option C: Use a change set to deploy the Apex code and Lightning Components.

Explanation: Change sets are the standard mechanism provided by Salesforce for deploying customizations between connected orgs (e.g., Sandbox to Production). They support deploying Apex classes, Lightning components, and configurations.

To embed a Flow into an Aura component, you use the lightning:flow component.

Option A: lightning

Correct Answer.

The lightning:flow component allows you to embed a Flow in an Aura component.

Example Usage:

To replace a JavaScript button from Salesforce Classic that creates records with prepopulated values in Lightning Experience, the developer can use:

Option A: Quick Actions

Quick Actions (Specifically, Object-Specific Actions):

Quick Actions allow users to perform actions, such as creating or updating records, from a record page or global context.

Prepopulating Fields:

You can predefine field values in Quick Actions using predefined values or by utilizing Lightning Component actions.

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.

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.

Unit tests in Salesforce are designed to test Apex code functionality and can execute certain operations within the testing context.

Option C: Generate a Visualforce PDF with getContentAsPDF

Explanation: In unit tests, you can generate a PDF from a Visualforce page using the getContentAsPDF() method. This is allowed within test methods and is a valid operation for unit testing.

To allow moving existing OrderItem records to a new Order record in a master-detail relationship:

Option B: Select the Allow reparenting option on the master-detail relationship.

Explanation: Enabling "Allow reparenting" on the master-detail field allows child records (OrderItem) to be reparented to a different master record (Order).

Steps:

Go to the master-detail field on OrderItem.

Edit the field and select "Allow reparenting".

To prevent duplicate Order records from being created when updates come from the OMS:

Option B: Use the order number from the OMS as an external ID.

Explanation: Setting the Order Number as an External ID allows Salesforce to recognize records based on this unique identifier during upsert operations.

Option D: Ensure that the order number in the OMS is unique.

Explanation: Having a unique Order Number in the OMS ensures that each order can be accurately identified and matched in Salesforce.

Why These Actions Prevent Duplicates:

By using upsert with the External ID, the integration can update existing orders instead of creating new ones.

// Example of upsert operation using External ID

upsert orderRecord Order_Number__c;



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.

When overriding standard buttons in Salesforce Classic and Lightning Experience, different technologies are used.

Salesforce Classic:

Visualforce pages are used to override standard buttons like Edit.

Lightning Experience:

Lightning Components (Aura Components or Lightning Web Components) are used.

Option C: A Visualforce page in Salesforce Classic and a Lightning component in Lightning Experience

Correct Answer.

Explanation:

In Salesforce Classic, override the Edit button with a Visualforce page.

In Lightning Experience, use a Lightning Component to override the Edit action.

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.

When deciding between SOQL (Salesforce Object Query Language) and SOSL (Salesforce Object Search Language), developers must consider the use case and limitations of each.

Option A: SOSL is faster for text searches.

Correct Statement.

Explanation:

SOSL is optimized for searching text, especially across multiple objects and fields.

It uses full-text search indexes and can quickly find records that match search terms.

Ideal for scenarios where you need to search for a string across many fields.

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.

Option C: Update the PrimaryId__c field definition to mark it as an External Id.

Correct Answer.

Explanation:

Marking PrimaryId__c as an External ID allows data loading tools to match records based on this field.

This facilitates upserting data and ensures that the CSV data correctly maps to existing records.

To enable a custom event in a Lightning Web Component (LWC) to bubble up the containment hierarchy and cross the Shadow DOM boundary, the event must be dispatched with the properties:

bubbles: true

composed: true

bubbles Property:

When set to true, the event bubbles up through the DOM hierarchy, allowing parent components to listen for the event.

"The bubbles option indicates whether the event bubbles up through the DOM or not."— Lightning Web Components Developer Guide: Event Propagation

composed Property:

When set to true, the event can pass through the Shadow DOM boundary, allowing components outside the Shadow DOM to receive the event.

"The composed option controls whether the event can propagate across the boundary between the shadow DOM and the regular DOM."— Lightning Web Components Developer Guide: Event Composition

Example:

// ChildComponent.js

const event = new CustomEvent('myevent', {

bubbles: true,

composed: true,

detail: { /* event data */ }

});

this.dispatchEvent(event);

Why Other Options Are Incorrect:

Option B: bubbles: true, composed: false

The event will bubble up within the Shadow DOM but will not cross the Shadow DOM boundary.

Option C: bubbles: false, composed: false

The event will neither bubble nor cross the Shadow DOM boundary, limiting its propagation.

Option D: bubbles: false, composed: true

The event will not bubble up the containment hierarchy but can cross the Shadow DOM boundary, which is insufficient for the requirement.

Conclusion:

Setting both bubbles and composed to true ensures the event bubbles up through the component hierarchy and crosses the Shadow DOM boundary.

Option A: <apex:pageMessages />

Correct Answer.

Explanation:

The component displays all messages that were added to the ApexPages message list, including those added via ApexPages.addMessage().