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NEW QUESTION # 50
A developer created an Opportunity trigger that updates the account rating when an associated opportunity is considered high value. Current criteria for an opportunity to be considered high value is an amount greater than or equal to $1,000,000. However, this criteria value can change over time.
There is a new requirement to also display high value opportunities in a Lightning web component.
Which two actions should the developer take to meet these business requirements, and also prevent the business logic that obtains the high value opportunities from being repeated in more than one place?
Choose 2 answers
- A. Use custom metadata to hold the high value amount.
- B. Call the trigger from the Lightning web component.
- C. Create a helper class that fetches the high value opportunities,
- D. Leave the business logic code inside the trigger for efficiency.
Answer: A,C
Explanation:
Creating a helper class allows the logic to be centralized and reused in both the trigger and the Lightning Web Component (LWC), avoiding repetition. Using custom metadata to store the criteria value allows easy updates without code changes and can be referenced from both the helper class and the trigger.
Apex Developer Guide
Custom Metadata Types Guide
NEW QUESTION # 51
Universal Containers is leading a development team that follows the source-driven development approach in Salesforce. As part of their continuous integration and delivery (CL/CD) process, they need to automatically deploy changes to multiple environments, including sandbox and production.
'Which mechanism or tool would best support their CI/CD pipeline in source-driven development?
- A. Salesforce Extensions for Visual Studio Code
- B. Ant Migration Tool
- C. Change Sets
- D. Salesforce CLI with Salesforce DX
Answer: D
Explanation:
Salesforce CLI with Salesforce DX supports source-driven development and is designed for continuous integration and delivery (CI/CD) processes. It enables developers to automate deployments across multiple environments, including sandbox and production.
NEW QUESTION # 52
A developer created an Apex class that updates an Account based on input from a Lightning web component that Is used to register an Account. The update to the Account should only be made if it has not already been registered.
What should the developer do to ensure that users do not overwrite each other's updates to the same Account if they make updates at the same time? A)
B)
C)
D)
- A. Option D
- B. Option B
- C. Option A
- D. Option C
Answer: A
Explanation:
When multiple users are updating the same record at the same time, there is a risk of overwriting each other's changes. Salesforce provides a mechanism called 'record locking' to prevent this from happening.
Option D is correct because including FOR UPDATE in the SOQL query locks the retrieved records for the duration of the transaction. This prevents other transactions from updating the record until the current transaction is complete, which is essential for avoiding race conditions where two users might overwrite each other's updates.
Option A is incorrect because while adding a try/catch block around the update operation is good practice for handling exceptions, it does not prevent overwrites from concurrent updates.
Option B is incorrect because using upsert instead of update does not address the problem of concurrent updates. The upsert operation is used to either insert a new record or update an existing one based on whether a record with a matching ID or external ID already exists.
Option C is incorrect because FOR UPDATE should be used in the SOQL query to lock the records, not in the SELECT statement itself.
Salesforce Developer Documentation on Locking Statements: Locking Statements Salesforce Developer Blog on Handling Concurrency in Apex: Handling Concurrency in Apex
NEW QUESTION # 53
Refer to the test method below:
The test method calls an @future method that increments the Number_of_Times_Viewed__c value. The assertion is failing because the Number of Times Viewed_c equals 0. What is the optimal way to fix this?
- A. Add Test.atartTeat() before and Teat.stopTest() after inser= acct.
- B. Change the assertion to system.asserciquals (0, acctAfter Number _Cf_Timea_Viewed__c).
- C. Add rest.staztTest() before and Test.stopTess() after AuditUcil.incrementViewed.
- D. Change the initialization to acct. Number_Of_Times_Viewed_c = 1.
Answer: C
Explanation:
When a test method calls an @future method that performs DML operations, the changes made by the @future method won't be visible until after the Test.stopTest() is called. This method ensures that all asynchronous processes are completed before the test execution continues. Therefore, Test.startTest() should be before the call to the @future method and Test.stopTest() immediately after.
NEW QUESTION # 54
How should a developer verify that a specific Account record is being tested in a test class for a Visualforce controller?
- A. Insert the Account into Salesforce, instantiate the page reference in the test class, then use system. setFarentRecordId() .get() to set the Account ID.{of Instantiate the page reference in the test class, insert the Account inthe test class, then use =seeAllData=trus to view the Account.
- B. Instantiate the page reference in the test class, insert the Account inthe test class, then use system.setFarentRecordrd() .get() to set the Account ID,
- C. Insert the Account in the test class, instantiate the page reference in the test class, then use System.currentFageReference() .getFarameters() .put{) to set the Account ID.
Answer: C
Explanation:
To test a Visualforce controller that works with specific records, you should insert the necessary test data in the test class. Then instantiate a PageReference for the Visualforce page, set the record id in the page parameters, and use System.currentPageReference().getParameters().put('id', recordId) to simulate navigating to the page with that record.
NEW QUESTION # 55
A developer is building a Lightning web component that retrieves data from Salesforce and assigns it to the record property.
What must be done in the component to get the data from Salesforce? A)
B) C)
- A. Option B
- B. Option A
- C. Option C
Answer: B
Explanation:
Option A is the correct answer. The @wire decorator is used in conjunction with getRecord from lightning/uiRecordApi to retrieve a record from Salesforce. The syntax @wire(getRecord, { recordId: '$recordId', fields: '$fields' }) sets up a reactive property, which means it will automatically rerun whenever the recordId or fields property changes.
Get Record Data
NEW QUESTION # 56
An org has a requirement that an Account must always have one and only one Contact listed as Primary. So selecting one Contact will de-select any others. The client wants a checkbox on the Contact called 'Is Primary' to control this feature.
The client also wants to ensure that the last name of every Contact is stored entirely in uppercase characters.
What is the optimal way to implement these requirements?
- A. Write a single trigger on Contact for both after update and before update and callout to helper classes to handle each set of logic.
- B. Write an after update trigger on Contact for the Is Primary logic and a separate before update trigger on Contact for the last name logic.
- C. Write a Validation Rule on the Contact for the Is Primary logic and a before update trigger on Contact for the last name logic.
- D. Write an after update trigger on Account for the Is Primary logic and a before update trigger on Contact for the last name logic.
Answer: A
Explanation:
A single trigger on Contact that handles both after update and before update events, utilizing helper classes for each logic set, is the most optimal implementation. It centralizes the logic for maintaining primary contacts and normalizing last names while allowing for clear separation of concerns through helper classes.
NEW QUESTION # 57
Which technique can run custom logic when a Lightning web component is loaded?
- A. Use an <aura:handler> init event to call a function.
- B. Call 52. engqueusiction and pass in the method to call.
- C. Use the connectedCallback { } method.
- D. Use the randersd loack { } method.
Answer: C
Explanation:
The connectedCallback() lifecycle hook in Lightning Web Components (LWC) is used to perform logic after a component is inserted into the DOM, making it the ideal place to execute custom logic when the component is loaded.
NEW QUESTION # 58
Instead of waiting to send emails to support personnel directly from the finish method of a batch Apex process, Universal Containers wants to notify an external system in the event that an unhandled exception occurs.
What is the appropriate publish/subscribe logic to meet this requirement?
- A. No publishing is necessary. Have the external system subscribe to the BatchapexErrorEvent.
- B. Publish the error event using the Eventbus. publish () method.
- C. Publish the error event using the addError method.
- D. Publish the error event with a Flow.
Answer: A
Explanation:
Use BatchApexErrorEvent for notifications. It's automatically triggered for unhandled exceptions in batch Apex. No need for manual publishing. External systems can subscribe to this event to receive notifications.
NEW QUESTION # 59
Universal Containers is using a custom Salesforce application to manage customer support cases. The support team needs to collaborate with external partners to resolve certain cases. However, they want to control the visibility and access to the cases shared with the external partners. Which Salesforce feature can help achieve this requirement?
- A. Sharing sets
- B. Criteria-based sharing rules
- C. Role hierarchy
- D. Apex managed sharing
Answer: D
Explanation:
Apex managed sharing is the correct feature to control the visibility and access to cases shared with external partners. It allows developers to programmatically create sharing records that grant access to users based on specific criteria, providing granular control over record sharing.
NEW QUESTION # 60
A developer is asked to modify a Lightning web component so that it displays in one column on phones and in two columns on tablets, desktops, and larger devices.
Given to the code below:
Which should the developer add to the code to meet the requirements? A)
B)
C)
D)
- A. Option D
- B. Option B
- C. Option A
- D. Option C
Answer: B
Explanation:
The requirement is for the Lightning web component to display in one column on phones and in two columns on larger devices. To achieve this, we should specify the size attributes for different devices using the design tokens provided by the Lightning Design System.
Option B is correct because size="6" will set each lightning-layout-item to take up half the available space (since the grid system is based on a 12-column structure), creating two columns on tablets, desktops, and larger devices. small-device-size="12" will ensure that on small devices like phones, each item will take up the full width, resulting in a single column.
Options A, C, and D do not meet the requirement correctly, as they either do not set the size correctly for small devices or do not specify the sizes for both small and larger devices appropriately.
Lightning Design System Grid Documentation: Lightning Grid
NEW QUESTION # 61
A developer is asked to look into an issue where a scheduled Apex is running into DML limits. Upon investigation, the developer finds that the number of records processed by the scheduled Apex has recently increased to more than 10,000.
What should the developer do to eliminate the limit exception error?
- A. Implement the Qususabls interface.
- B. Use platform events.
- C. Use the @future annotation.
- D. Implement the Batchable interface.
Answer: D
Explanation:
When scheduled Apex runs into DML limits due to a high number of records, implementing the Batchable interface is recommended. This allows the job to be broken down into smaller batches that are processed separately, thus avoiding hitting governor limits. Reference:
Using Batch Apex
NEW QUESTION # 62
For compliance purposes, a company is required to track long-term product usage in their org. The information that they need to log will be collected from more than one object and, over time, they predict they will have hundreds of millions of records.
What should a developer use to implement this?
- A. Field history tracking
- B. Setup audit trail
- C. Field audit trail
- D. Big objects
Answer: D
Explanation:
Big objects provide a solution for storing and managing large amounts of data within Salesforce. They are ideal for compliance purposes when tracking long-term usage data that will accumulate over time into very large record counts.
NEW QUESTION # 63
A developer is working on an integration between Salestorce and an external system. The integration requires sending a large amount of data to the external systern, which can cause long response times and timeouts.
To optimize the performance and avoid timeouts, which technique should be used?
- A. Use a chained batch Apex to split the data into smaller batches.
- B. Use the @future annotation to make the callout asynchronous.
- C. Implement an asynchronous callout using the Continuation class,
- D. Increase the timeout limit in the callout options,
Answer: C
Explanation:
Implementing an asynchronous callout using the Continuation class is the optimal solution to handle long response times and avoid timeouts in Salesforce. It allows the Apex code to make a long-running request to an external service and free up the thread to serve other requests.
NEW QUESTION # 64
A developer wrote a test class that successfully asserts a trigger on Account, It fires and updates data correctly In a sandbox environment.
A Salesforce admin with a custom profile attempts to deploy this trigger via a change set into the production environment, but the test class falls with an Insufficient privileges error.
What should a developer do to fix the problem?
- A. Add System.runAs() to the test class to execute the trigger as a user with the correct objectpermissions.
- B. Verify that Test. startTest() Is not Inside a For loop in the test class,
- C. Configure the production environment to enable"Run All Tests as Admin User."
- D. Add seeallData=true to the test class to work within the sharing model for the productionenvironment.
Answer: A
Explanation:
When a test class fails with an "Insufficient privileges" error during deployment, it indicates that the user profile under which the tests are being executed doesn't have the necessary permissions to perform the actions required by the test. In a sandbox, the test might have been running with a different set of permissions compared to the production environment.
By using System.runAs(), you can specify a user context in which the test should run, which allows you to simulate the appropriate permissions. For this to work, you need to create a User instance in your test class with the profile that has the necessary permissions and then enclose the logic of your test within a System.runAs() block with this user.
This is a preferred solution over seeAllData=true, which would give the test access to all data in the production environment, potentially leading to tests that are not isolated and thus less reliable. It's also preferred over changing organization-wide settings or relying on specific setup in test classes, such as making sure Test.startTest() is not inside a loop.
Salesforce Documentation on Using the runAs Method: Testing with the runAs Method Salesforce Help Article on System Permissions: Profiles and Permissions
NEW QUESTION # 65
An Apex trigger and Apex class increment a counter, Edit __C, any time the Case is changed.
A)
B)
C)
D)
- A. Option B
- B. Option D
- C. Option C
- D. Option A
Answer: C
NEW QUESTION # 66
As part of a custom interface, a developer team creates various new Lightning web components. Each of the components handles errors using toast messages. When the development is complete, all the components are added to the same Lightning page.
During acceptance testing, users complain about the long chain of toast messages that display when errors occur loading the components.
Which two techniques should the developer implement to improve the user experience?
Choose 2 answers
- A. Use a Lightning web component to aggregate and display all errors
- B. Use public, properties on each component to display the error messages.
- C. Use a <tamplate> tag to display in-place error messages.
- D. Use the window.alert() method to display the error messages
Answer: A,B
Explanation:
The scenario describes a common issue when multiple components are used on the same Lightning page and each component manages its error handling independently, leading to a "long chain of toast messages" which can be overwhelming for users.
To improve user experience, the developers can implement the following techniques:
A . Use a Lightning web component to aggregate and display all errors: This method involves creating a centralized component responsible for handling all error messages. This component would receive error notifications from other components and then display them in a user-friendly manner. The benefit of this approach is that it provides a single, consistent interface for error messages, reducing the clutter and confusion that can be caused by multiple toasts.
D . Use public properties on each component to display the error messages: By using public properties, components can expose their error states to a parent or orchestrating component, which can then display these errors in a single, consolidated way. This avoids the issue of multiple toast notifications and allows for a more integrated error handling experience.
The other options presented are less ideal:
B . Using the window.alert() method is not recommended in a professional Salesforce environment as it is considered a disruptive way to show errors and does not align with the Salesforce Lightning design system.
C . Using a <template> tag to display in-place error messages could be a viable option for displaying error messages within the component itself, but it does not address the issue of multiple errors stacking up from different components as described in the scenario.
For building a centralized error handling component: Lightning Web Components Developer Guide - Error Handling For implementing public properties: Lightning Web Components Developer Guide - Public Properties
NEW QUESTION # 67
An org has an existing process, built using Process Builder, on Opportunity that sets a custom field, CommissionBaseAmount__c, when an Opportunity is edited and the Opportunity's Amount changes.
A developer recently deployed an Opportunity before update trigger that uses the CommissionBaseAmount__c and complex logic to calculate a value for a custom field, CommissionAmount__c, when an Opportunity stage changes to Closed/Won.
Users report that when they change the Opportunity to Closed/Won and also change the Amount during the same save, the CommissionAmount__c is incorrect.
Which action should the developer take to correct this problem?
- A. Call the trigger from the process.
- B. A Replace the process with a Fast Field Update record-trigger flow.
- C. Call the process from the trigger.
Answer: B
Explanation:
The issue described is likely due to the order of execution in Salesforce, where processes in Process Builder run after all before triggers. If the Opportunity's Amount is changed and the CommissionBaseAmount__c is set by Process Builder, the trigger that calculates CommissionAmount__c may not see the updated value if it operates before the process.
Replacing the process with a before-save record-triggered flow (formerly known as Fast Field Update) would ensure that CommissionBaseAmount__c is updated before the trigger runs. In a before-save flow, field updates occur before any Apex before update triggers fire, which means the trigger would have the updated value of CommissionBaseAmount__c to use in its calculation.
eferences:
Order of Execution in Salesforce
Before-Save Record-Triggered Flows
NEW QUESTION # 68
Refer to the Aura component below:
A developer receives complaints that the component loads slowly. Which change can the developer implement to make the component perform faster?
- A. Move the contents of <c: contactInfo into the componant.
- B. Change the type of contactInfo to "Map".
- C. Change the default for showContactInfo to "False.
- D. Add a change event handler for showContactInfo.
Answer: C
Explanation:
To improve the performance of an Aura component that is loading slowly, the developer can make the following change:
Lightning Components Performance Best Practices: Improve Performance
D). Change the default for showContactInfo to "False": By setting the default value of showContactInfo to False, the component does not fetch or render the contact information by default, which can reduce the initial load time. The information can be fetched and displayed later based on user action or other triggers.
NEW QUESTION # 69
A developer is tasked with creating a Lightning web component that allows users to create a Case for a selected product, directly from a custom Lightning page. The input fields in the component are displayed in a non-linear fashion on top of an image of the product to help the user better understand the meaning of the fields.
Which two components should a developer use to implement the creation of the Case from the Lightning web component?
Choose 2 answers
- A. lightning-record-form
- B. Lightning-input
- C. lightning-input-fimld
- D. Lightning-record-edit-forth
Answer: A,B
Explanation:
To implement a Lightning web component that allows users to create a Case, you would need components that allow for input fields and the creation of records.
Option C (Lightning-input) is correct because it allows developers to create custom form input elements that can be positioned in a non-linear fashion as required.
Option D (lightning-record-form) is correct because it provides a simple way to create forms for viewing and editing Salesforce records and would be suitable for creating a new Case record.
Option A (Lightning-record-edit-form) is not a valid component; it seems to be a misprint of lightning-record-edit-form, which is indeed a component used for creating and editing records but was not listed as an option.
Option B (lightning-input-field) is used within the lightning-record-edit-form or lightning-record-view-form components to create editable or displayable fields respectively, but is not as versatile as lightning-input for custom layout purposes.
Lightning Web Components Documentation: Lightning-input
NEW QUESTION # 70
A developer created a Lightning web component for the Account record page that displays the five most recently contacted Contacts for an Account. The Apex method, Contacts, returns a list of Contacts and will be wired to a property in the component.
Which two lines must change in the above code to make the Apex method able to be wired? Choose 2 answers
- A. Add public to line 04.
- B. Add @AuraEnabled {cacheable=true) to line 03.
- C. Remove private from line 09.
- D. Add @AuraEnabled {cacheable=trues) to line 08.
Answer: C,D
Explanation:
To make an Apex method callable from a Lightning Web Component, you need to annotate the method with @AuraEnabled and mark it as cacheable if it's only retrieving data without modifying it. Additionally, the method must be public to be accessible from the component.
Line 04: Needs @AuraEnabled(cacheable=true) to allow the method to be called from the Lightning Web Component and indicate that the method doesn't modify any data, making it suitable for caching.
Line 09: The method getFiveMostRecent should not be private because private methods cannot be called from a Lightning Web Component. Changing it to public (or default, which is equivalent to public within the same namespace) is required.
Lightning Web Components and Salesforce Data: Developer Documentation
@AuraEnabled Annotation: Apex Developer Guide
NEW QUESTION # 71
A developer creates an application event that has triggered an infinite loop.
What may have caused this problem?
- A. The event is fired from a custom renderer.
- B. An event is fired 'ontouchend'' and is unhandled.
- C. The event has multiple handlers registered in the project.
- D. The event handler calls a trigger.
Answer: C
Explanation:
The infinite loop in the application event could be caused by multiple handlers registered in the project. If the event is fired and then handled in such a way that the handling leads to the event being fired again, this can create a loop. Care must be taken to ensure that the handling of the event does not re-trigger the same event unintentionally.
NEW QUESTION # 72
When the sales team views an individual customer record, they need to see recent interactions for the customer. These interactions can be sales orders, phone calls, or Cases. The date range for recent interactions will be different for every customer record type.
How can this be accomplished?
- A. Use a Lightning component to query and display interactions based on record type that is passed in using a design:attribute from the Lightning page.
- B. Use batch Apex to query for the most recent interactions when the customer view screen is loaded.
- C. Use a dynamic form on the customer record page to display recent interactions.
- D. Use Lightning Flow to read the customer's record type, and then do a dynamic query for recent interactions and display on the View page.
Answer: A
Explanation:
A Lightning component can dynamically query and display interactions based on the customer's record type. The component can receive the record type as a parameter and adjust the query accordingly, providing the required functionality without batch processing or additional configurations.
NEW QUESTION # 73
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Detailed New Plat-Dev-301 Exam Questions for Concept Clearance: https://prep4sure.real4prep.com/Plat-Dev-301-exam.html