Salesforce Certified Platform Developer I Practice Questions

Batch Apex is specifically designed for processing large numbers of records asynchronously. It breaks the job into manageable chunks (batches), and each chunk is processed in a separate transaction with its own set of governor limits. This allows the job to process millions of records without exceeding limits. The start, execute, and finish methods provide a clear structure for querying records, processing them in batches, and performing final actions.

The Test.startTest() and Test.stopTest() block serves two primary purposes. First, it creates a new, separate context for governor limits, allowing you to isolate the code you are specifically testing from test setup code. Second, any asynchronous processes (like @future or Queueable Apex) called after Test.startTest() are guaranteed to finish execution before the code after Test.stopTest() runs, allowing you to assert their results.

Lightning Web Components (LWC) is Salesforce's modern UI framework built on current web standards like Web Components, ES6+ JavaScript, and custom elements. It is designed for high performance, responsiveness, and mobile-first development. For any new custom UI development on the Salesforce platform, LWC is the recommended and superior choice over the older Visualforce and Aura frameworks.

This is the optimal declarative solution. The Master-Detail relationship between Account and Shipment__c allows for the use of Roll-Up Summary fields. The first Roll-Up Summary field can directly calculate the SUM of Weight_kg__c while filtering out 'Cancelled' shipments. The second Roll-Up Summary field can COUNT the number of 'Pending' shipments. A simple formula field can then reference this count to display a checkbox (IF(Pending_Shipment_Count__c > 0, true, false)), satisfying both requirements without any Apex code, which is more efficient and maintainable.

Queueable Apex is the best choice here. It supports callouts, can handle complex sObjects as parameters (unlike future methods), and provides a job ID that can be used for monitoring and auditability. Crucially, a Queueable job can enqueue another job, which is a common pattern for implementing retry logic on failure. Batch Apex is for processing large data volumes, and future methods are simpler but lack the job ID and chaining capabilities needed for this requirement.

A custom controller with a wrapper class is the most robust solution. The wrapper class can encapsulate the OpportunityLineItem sObject and any additional properties needed for the page, such as a boolean for row selection or temporary edit values. This approach provides maximum flexibility for handling complex page logic, especially for inline editing of multiple records, without being constrained by the features of standard controllers. The save method can then iterate through the list of wrappers, collect the modified records, and perform a single DML update, which is efficient.

An Apex trigger is the best choice because the requirement includes making a web service callout. While Flow can make callouts, performing a callout directly from a record-triggered path (like a trigger) must be done asynchronously to avoid holding up the database transaction. An Apex trigger can invoke an asynchronous Apex method (using the @future(callout=true) annotation) to perform the web service call. This cleanly separates the synchronous record update from the asynchronous external communication, which is a best practice and necessary to avoid a CalloutException.

Using the Schema methods like getRecordTypeInfosByName() is the best practice for obtaining RecordType IDs within a test context. This approach is dynamic and does not rely on hard-coded IDs, which can change between environments (e.g., sandboxes, production). It also avoids making a SOQL query, which consumes a governor limit. Furthermore, it does not require SeeAllData=true, ensuring the test remains isolated and reliable.

A Master-Detail relationship is the correct choice. This relationship type creates a tight coupling where the detail (child) record's existence depends on the master (parent) record. Key features that meet the requirements are: 1) The detail record inherits the sharing and security settings of the master record. 2) Deleting the master record automatically deletes all related detail records (cascade delete). 3) The relationship field on the detail record is required by default, ensuring every client is assigned to an advisor.

Change Sets are a native Salesforce UI-based tool used to move metadata between connected orgs (like from a sandbox to another sandbox or production). They can package Apex classes, Lightning Web Components, and Profiles, meeting all the requirements of the scenario.

The Salesforce CLI (SFDX) is a powerful command-line tool for Salesforce development and deployment. A developer can retrieve the specified metadata components from the source org and deploy them to the target org. This method offers more control, is scriptable, and is a core part of modern DevOps processes.