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Refer to the following code snippet:
Java
public class LeadController {
public static List
String safeTerm = '%'+searchTerm.escapeSingleQuotes()+ '%';
return [
SELECT Name, Company, AnnualRevenue
FROM Lead
WHERE AnnualRevenue >= :aRevenue
AND Company LIKE :safeTerm
LIMIT 20
];
}
}
A developer created a JavaScript function as part of a Lightning web component (LWC) that surfaces information about Leads by wire calling getFetchLeadList when certain criteria are met. Which three changes should the developer implement in the Apex class above to ensure the LWC can display data efficiently while preserving security?1
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A, B, C
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Explanation
Compreh17ensive and Detailed 11850 to 250 words of Explanation: To make an Apex method compatible with a Lightning Web Component's @wire service and ensure it follows security best practices, three specific modifications are required: @AuraEnabled(Cacheable=true) (Option C): The @wire service in LWC requires the Apex method to be marked as cacheable. This enables client-side caching via the Lightning Data Service, which significantly improves UI performance by reducing redundant server calls. Note that Cacheable=true is mandatory for @wire but optional for imperative calls. with sharing (Option B): In Apex, classes do not enforce sharing rules by default. To ensure the user only sees Leads they have access to according to the organization-wide defaults and sharing model, the class must explicitly use the with sharing keyword. WITH SECURITY_ENFORCED (Option A): While with sharing handles record-level access, it does not automatically enforce field-level security (FLS) or object-level security (CRUD). Adding the WITH SECURITY_ENFORCED clause to the SOQL query ensures that if a user does not have permission to view the AnnualRevenue field, the query will throw an exception rather than exposing protected data. Options D and E are incorrect because without sharing bypasses security, and a simple @AuraEnabled without cacheable=true is insufficient for the LWC @wire service. |
A developer has a Visualforce page that automatically assigns ownership of an Account to a queue upon save. The page appears to correctly assign ownership, but an assertion validating the correct ownership fails. What can cause this problem?
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B
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|---|
|
Explanation
A frequent mistake in Apex unit testing is failing to recognize that SObject variables in memory do not automatically reflect changes made to the database by triggers, flows, or other logic. When the developer saves the Account record in the test4, the database is updated (e.g., a trigger or the controller changes the OwnerId to the Queue ID). However, the variable used in the test still holds the original data that was present when it was first instantiated or inserted. To successfully assert the change, the developer must perform a "refresh" query. This involves using a SOQL statement to retrieve the record from the database using its ID: Account updatedAcc = [SELECT OwnerId FROM Account WHERE Id = :acc.Id];. The assertion should then be performed against updatedAcc.OwnerId. Option B correctly identifies this as the root cause. Option A is irrelevant as Queueable is an asynchronous execution pattern. Option C (seeAllData=true) is a poor practice and is not required for testing logic that modifies records. Option D is unrelated to assertion logic. Standard test isolation requires that you explicitly re-query the database to verify side effects caused by platform automation or controller logic. ========== |
Business rules require a Contact to always be created when a new Account is created. What can be used when developing a custom screen to ensure an Account is not created if the creation of the Contact fails?
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A
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|---|
|
Explanation
This requirement calls for "Transactional Atomicity," meaning either both database operations (Account creation and Contact creation) succeed, or neither is committed to the database. In Apex, each DML statement normally acts as its own individual transaction unless managed by Savepoints. The correct approach is to use Database.setSavepoint() and Database.rollback() within a try-catch block (Option A). The developer sets a savepoint immediately before the Account is inserted. If the Account is created successfully but the subsequent Contact insertion fails (due to a validation rule, trigger error, or system exception), the code enters the catch block. Within the catch block, the developer executes Database.rollback(sp), which reverts the database to the state it was in before the Account was ever inserted. Option B is technically similar but "A" provides the standard programmatic pattern name. Option C (allOrNone=false) only applies to a single list of records in one DML call and cannot link the success of an Account to a Contact. Option D (manual deletion) is an unreliable "cleanup" strategy that fails if the system crashes or if there are secondary side effects from the initial insertion. Using Savepoints ensures the platform handles the rollback safely and completely. |
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Find answers to the most common questions about the Salesforce PDII exam, including what it is, how to prepare, and how it can boost your career.
The Salesforce PDII certification is a globally-acknowledged credential that is awarded to candidates who pass this certification exam by obtaining the required passing score. This credential attests and validates the candidates' knowledge and hands-on skills in domains covered in the Salesforce PDII certification syllabus. The Salesforce PDII certified professionals with their verified proficiency and expertise are trusted and welcomed by hiring managers all over the world to perform leading roles in organizations. The success in Salesforce PDII certification exam can be ensured only with a combination of clear knowledge on all exam domains and securing the required practical training. Like any other credential, Salesforce PDII certification may require periodic renewal to stay current with new innovations in the concerned domains.