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[Hardware] Plat-Dev-301 Preparation Store - Exam Plat-Dev-301 Assessment

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【Hardware】 Plat-Dev-301 Preparation Store - Exam Plat-Dev-301 Assessment

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Salesforce Certified Platform Developer II - Multiple Choice Sample Questions (Q121-Q126):NEW QUESTION # 121
Business rules require a Contact ta 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?
  • A. Disable validation rules on Contacts and set default values with a trigger.
  • B. Use the Database. Delete method if the Contact insertion fails.
  • C. Use setSaverpoint (1) and rollback() with a try-catch block.
  • D. Use the Database. Insect method with a11orNone SEL LO alee,
Answer: C
Explanation:
When developing a custom screen that requires both an Account and Contact to be created together, using setSavepoint() and rollback() within a try-catch block is a reliable way to ensure that if the Contact creation fails, the Account creation is also rolled back, maintaining data integrity.

NEW QUESTION # 122
When the code is executed, the callout is unsuccessful and the following error appears within the Developer Console:
System.CalloutException: Unauthorized endpoint
Which recommended approach should the developer implement
to resolve the callout exception?
  • A. Create a remote site setting configuration that includes the endpoint.
  • B. Annotate the getkRFCatalogContents method with @Future (Callout-true),
  • C. Change the access modifier for ERPCatalog from public to global.
  • D. Use the SetHeader() method to specify Basic Authentication,
Answer: A
Explanation:
The System.CalloutException with the message "Unauthorized endpoint" typically indicates that the endpoint to which the callout is being made has not been authorized in the Salesforce org's security settings. To resolve this, the developer must navigate to the Remote Site Settings in the Salesforce Setup and add the endpoint URL as a new remote site. This step is necessary to authorize the Salesforce org to send outbound callouts to that specific endpoint. Annotating with @Future(Callout=true) is necessary for making callouts from methods that perform DML operations, but it does not resolve endpoint authorization issues. Similarly, changing the access modifier or using SetHeader() for authentication would not address the unauthorized endpoint error.
Remote Site Settings
Apex Developer Guide: Making Callouts Using Apex

NEW QUESTION # 123
Refer to the Lightning component below:

The Lightning Component allows users to click a button to save their changes and then redirects them to a different page. Currently when the user hits the Save button, the records are getting saved, but they are not redirected. Which three techniques can a developer use to debug the JavaScript? Choose 3 answers
  • A. Use console.log () messages in the JavaScript.
  • B. Use the browser's dev tools to debug the JavaScript.
  • C. Use Developer Console to view checkpoints.
  • D. Use Developer Console to view the debug log.
  • E. Enable Debug Mode for Lightning components for the user.
Answer: A,B,E
Explanation:
When debugging JavaScript in a Lightning Component, developers can utilize the following techniques:
A . Use console.log() messages in the JavaScript: This is a standard debugging technique to log information to the browser console, which can help trace the execution flow or output variable values.
B . Use the browser's dev tools to debug the JavaScript: Modern browsers come equipped with developer tools that can be used to set breakpoints, step through code, and inspect variables at runtime.
C . Enable Debug Mode for Lightning components for the user: Enabling Debug Mode for users provides more detailed error messages and unminified versions of client-side libraries, making it easier to debug issues.
Using the Developer Console to view checkpoints (Option D) and debug logs (Option E) is more relevant for Apex debugging rather than JavaScript.
Salesforce Documentation on Debugging Lightning Components: Debugging

NEW QUESTION # 124
The Account object has a field, Audit_Code_c, that is used to specify what type of auditing the Account needs and a Lookup to User, zudizar_c, that is the assigned auditor. When an Account is initially created, the user specifies the Audit_Code c. Each User in the org has a unique text field, Audit_Code _e, that is used to automatically assign the correct user to the Account's Auditor_c field.

What should be changed to most optimize the code's efficiency? Choose 2 answers
  • A. Add a WHERE clause to the SOQL query to filter on audit codes.
  • B. Build a Map<Id, List<string>>of Account Id to audit codes.
  • C. Add an initial SOQL query to get all distinct audit codes.
  • D. Build a Map<string, List<Account>> of audit code to accounts.
Answer: A,D
Explanation:
To optimize the code's efficiency when assigning users to the Account's Auditor field based on the audit code, the following changes should be considered:
B . Building a map of audit code to accounts (Map<string, List<Account>>) would allow for efficient grouping of accounts by their audit code. This would make it easier to process accounts with the same audit code in a single operation, reducing the number of SOQL queries and DML operations needed.
D . Adding a WHERE clause to the SOQL query to filter on audit codes would limit the number of records returned by the query. This means the code only processes relevant User records with matching audit codes, thereby reducing the processing time and memory consumption.
Option A is not recommended because querying for all distinct audit codes without any context of the accounts being processed could be inefficient. Option C is less effective because it would involve creating a mapping of Account Ids to audit codes, which doesn't aid in the efficient assignment of auditor to accounts.
Salesforce Developer Guide on Maps: Apex Maps
Salesforce Developer Guide on SOQL Queries: SOQL SELECT Syntax

NEW QUESTION # 125
A developer wrote a trigger on Opportunity that will update a custom Last Sold Date field on the Opportunity's Account whenever an Opportunity is closed. In the test class for the trigger, the assertion to validate the Last Sold Date field fails.
What might be causing the failed assertion?
  • A. The test class has not re-queried the Account record after updating the Opportunity.
  • B. The test class is not using System. runs () to run tests as a Salesforce administrator.
  • C. The test class has not implemented seealldata=true in the test method.
  • D. The test class has not defined an Account owner when inserting the test data.
Answer: A
Explanation:
The test class may not be re-querying the Account record after updating the Opportunity, which is necessary to verify the updated field values. If the test does not query the database to get the most recent data after the trigger runs, it will not see the changes made by the trigger.

NEW QUESTION # 126
......
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