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| Section | Objectives |
|---|---|
| Application Development | - Advanced Apex programming
|
| Testing and Deployment | - Testing strategies
|
| Integration and APIs | - Platform events and messaging
|
| Data Modeling and Management | - Advanced data modeling
|
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NEW QUESTION # 82
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?
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 # 83
A developer is developing a reusable Aura component that will reside on an sObject Lightning page with the following HTML snippet:
How can the component"5 controller get the context of the Lightning page that the sObject is on without requiring additional test coverage?
Answer: C
Explanation:
By implementing force:hasSobjectName, the Aura component can retrieve the sObject context of the record page it is placed on without needing additional information. This interface provides the component with the API name of the sObject being displayed.
Aura Components Developer Guide
NEW QUESTION # 84
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
Answer: B,C
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 # 85
Refer to the code snippet below:
A custom object called Credit_Memo__c exists in a Salesforce environment. As part of a new feature development that retrieves and manipulates this type of record, the developer needs to ensure race conditions are prevented when a set of records are modified within an Apex transaction. In the preceding Apex code, how can the developer alter the query statement to use SOQL features to prevent race conditions within a transaction? A)
B)
C)
D)
Answer: D
Explanation:
To prevent race conditions during an Apex transaction, the SOQL query can be modified to include the "FOR UPDATE" keyword. This keyword locks the records that are returned by the query, preventing other transactions from modifying them until the current transaction is complete. This ensures that the retrieved records cannot be changed by another process before the current transaction is completed, thus preventing race conditions. The correct option to use in the code snippet provided is:
[SELECT Id, Name, Amount__c FROM Credit_Memo__c WHERE Customer_Id__c = :customerId LIMIT 50 FOR UPDATE] This will lock up to 50 records of Credit_Memo__c with the specified Customer_Id__c for the duration of the transaction.
FOR UPDATE
Preventing Record Update Conflicts
NEW QUESTION # 86
Refer to the component code and requirements below:
A)
B)
C)
D)
Answer: B
NEW QUESTION # 87
......
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