Free Practice Questions for Salesforce PDII Exam

Implementing pagination using the standard Account List controller in Visualforce is a proven method to improve performance when displaying large sets of data. Pagination allows only a subset of records to be fetched and displayed at a time, thereby reducing the load time of the page.

The format method of the Date class is used to convert a Date to a String formatted in the current user's locale. This respects the locale settings of the user context under which the code is running, ensuring the date is represented in a way that is familiar to the user.

Lightning-layout and lightning-layout-item are components used in Lightning Web Components to create responsive grid layouts that adapt to the screen size of various devices.

When writing a test class for a Queueable class in Salesforce, the goal is to ensure that the asynchronous code is executed within the test context and that it does not affect the state of the production org or depend on its data.

Option C is correct because using Test.startTest() and Test.stopTest() ensures that the asynchronous code is executed immediately within the test's context. This is essential for testing Queueable classes because it allows the test to wait for the asynchronous process to complete before assertions are made. Without this, the asynchronous job would not necessarily run during the test execution.

Option D is correct because Test.isRunningTest() can be used within the Queueable class to prevent the chaining of jobs during test execution. Chaining queueable jobs can lead to governor limits being hit and is generally not allowed in test methods. This conditional check allows the developer to bypass sections of the code not suitable for a testing context.

Option A is incorrect because the seeAllData=True annotation is not required for testing Queueable classes, and it is not a best practice to depend on live data for tests. It's preferable to create test data within the test class itself.

Option B is incorrect because having the 'View All' permission on the Order object is not related to the successful execution of the Queueable class in tests. Permissions are typically not enforced in test contexts unless using System.runAs() to test with a specific user context.

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.

JavaScript remoting in Visualforce allows for the execution of complex server-side application logic without the need to refresh the entire page, providing a more dynamic user experience. It supports more complex operations than Visualforce Remote Objects, which are intended for basic CRUD operations.

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.

Replacing custom settings with custom metadata types is a good solution to ensure that test data is consistent across environments. Custom metadata types are deployable, and their records are available in test methods by default, unlike List Custom Settings which need to be manually recreated in each environment after a refresh.

Platform events in Salesforce can be published using a variety of mechanisms, including from external applications through the Salesforce APIs.

Option A is correct because external applications can use Salesforce APIs such as the REST API or the SOAP API to publish events to a platform event in Salesforce.

Options B, C, and D describe mechanisms that are not used for publishing platform events. Entitlement processes are for setting up and tracking service contracts, the standard Streaming API is for subscribing to events not publishing them, and outbound messages are a workflow action used to send information to external services, not for publishing platform events.

Overriding the standard Case New Action with a Lightning Flow allows the developer to create a custom wizard-style interface for creating cases. Lightning Flows can be embedded in Lightning Experience and provide a guided visual experience.