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| Section | Objectives |
|---|---|
| Application Development | - Asynchronous processing
|
| Testing and Deployment | - Deployment lifecycle
|
| Integration and APIs | - External system integration
|
| Data Modeling and Management | - Advanced data modeling
|
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NEW QUESTION # 118
Consider the following code snippet:
How should the <e-orders> component communicate to the <c-selected-orders component that an order has been selected by the user?
Answer: C
Explanation:
Create and dispatch a custom event. This approach allows LWC components to communicate effectively, maintaining component encapsulation and reusability.
NEW QUESTION # 119
Universal Containers needs to integrate with their own, existing, internal custom web application. The web application accepts JSON payloads, resizes product images, and sends the resized images back to Salesforce.
What should the developer use to implement this integration?
Answer: B
Explanation:
In a scenario where an integration requires making a callout to an external web application, Apex is often used to perform callouts. The callout must be asynchronous when being made from a trigger because a callout cannot be made from a synchronous operation like a trigger due to the possibility of long-running transactions.
Option A (An Apex trigger that calls an @future method that allows callouts) is correct because it enables the trigger to perform an asynchronous callout to the external web application, which is necessary for sending JSON payloads and receiving the resized images.
Options B, C, and D do not fit the requirement as well as option A because platform events and flows are typically not used for making direct callouts to external systems in the context described.
Apex Developer Guide: Apex Web Services and Callouts
NEW QUESTION # 120
Universal Containers (UC) has an ERP system that stores customer Information, When an Account is created in Salesforce, the ERP system's REST endpoint for creating new customers must automatically be called with the Account information. If the call to the ERP system falls, the Account should still be created. Accounts in the UC org are only created, one at a time, by users in the UC customer on-boarding department.
What should a developer implement to make the call to the ERP
system's REST endpoint?
Answer: B
Explanation:
Since the requirement is to make a callout to an external ERP system when an Account is created and still allow for the Account creation even if the call fails, a Queueable class called from a trigger is the best solution. Queueable Apex allows you to submit jobs for asynchronous processing similar to future methods but with additional benefits such as chaining jobs and monitoring the job status.
By using a Queueable, the callout can be made after the Account is created, which respects the Salesforce order of execution and avoids the limitation of callouts not being allowed after DML operations in the same transaction. This approach also does not block the user interface or the creation of the Account record if the callout to the ERP system takes a long time or fails.
Salesforce Documentation on Queueable Apex: Using Queueable Apex to Perform Jobs Salesforce Developer Guide on Asynchronous Apex: Queueable Apex
NEW QUESTION # 121
Which code snippet processes records in the most memory efficient manner, avoiding governor limits such as "Apex heap size too large"?
A)
B) C)
D)
Answer: A
Explanation:
Option D, which uses the Database.query() method in combination with a for loop, is the most memory-efficient way to process records. This is known as the Query Locator pattern, which allows you to work with a large number of records by querying them in batches. This approach helps to avoid hitting the governor limit for "Apex heap size too large" as it processes one record at a time from the database without storing the entire result set in memory.
Working with Very Large SOQL Queries
Apex Governor Limits
NEW QUESTION # 122
A company accepts orders for customers in their enterprise resource planning (ERP) system that must be integrated into Salesforce as order_ c records with a lookup field to Account. The Account object has an external ID field, ENF_Customer_ID_c.
What should the Integration use to create new Oder_c records that will automatically be related to the correct Account?
A)
B)
C)
D)
Answer: C
Explanation:
When integrating external systems with Salesforce and creating records that need to be associated with existing Salesforce records based on an external ID, Salesforce provides the ability to reference an external ID field in a related object directly within a create or update call.
Option A is correct because the upsert operation can be used to either insert new records or update existing ones. By specifying the external ID field (ENF_Customer_ID__c) for the Account relationship, the system will automatically link the Order__c record to the correct Account based on the external ID provided by the ERP system.
Options B, C, and D are incorrect because they do not specifically utilize the capability of referencing an external ID to associate records during an integration process.
Salesforce Developer Documentation on Inserting or Updating Records Using an External ID: Inserting or Updating Records Using an External ID
NEW QUESTION # 123
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