Pass the Salesforce Developers PDII Questions and answers with ValidTests

The correct way to fix this is to add Test.startTest() before and add Test.stopTest() after Line 18 of the code. This will reset the governor limits for the code that executes between these two methods, and allow the test to run without hitting the SOQL query limit. The Test.startTest() and Test.stopTest() methods are used to test code that makes a lot of queries or calls asynchronous methods12. By using these methods, the developer can isolate the code that needs more resources and verify that it does not exceed the governor limits.

References:

Using Limits, startTest, and stopTest | Apex Developer Guide | Salesforce Developers

Test.StartTest & Test.StopTest - Salesforce Developer Community

Why would a developer use test startTest and test stopTest in Salesforce? | ForceTalks

The requirement is for the Lightning web component to display in one column on phones and in two columns on larger devices. To achieve this, we should specify the size attributes for different devices using the design tokens provided by the Lightning Design System.

Option B is correct because size="6" will set each lightning-layout-item to take up half the available space (since the grid system is based on a 12-column structure), creating two columns on tablets, desktops, and larger devices. small-device-size="12" will ensure that on small devices like phones, each item will take up the full width, resulting in a single column.

Options A, C, and D do not meet the requirement correctly, as they either do not set the size correctly for small devices or do not specify the sizes for both small and larger devices appropriately.

References:

Lightning Design System Grid Documentation: Lightning Grid

The transient keyword in Visualforce page controllers marks variables that should not be part of the view state, which can significantly reduce the size of the view state. This can help avoid view state limit errors and improve page performance because a smaller view state requires less time to send to the client.References: Visualforce Developer Guide - Reducing View State Size

Event Monitoring Log provides the ability to track different types of events in Salesforce, including user logins. These logs can be used to determine the last login time of a user without the need for real-time notification.References: Salesforce Help - Event Monitoring

For retrieving specific records using a known ID, the REST API is optimal due to its stateless, cacheable communications and lightweight structure. It's ideal for web applications that use JavaScript to make requests directly from the user’s browser. Using the REST API, the web page can make a simple HTTP GET request to the Salesforce REST service endpoint and retrieve the account information in a format that's easily handled by JavaScript (typically JSON).

References:

REST API Developer Guide

To improve performance, the developer should specify only the fields needed by using the fields attribute in the lightning-record-form instead of loading all fields with layout-type="Full". This reduces the amount of data being retrieved and processed, thus improving the component's performance.References: Lightning Web Components Developer Guide - lightning-record-form

To make a Lightning web component available in the Lightning App Builder, the developer must specify the target where the component can be placed (e.g., record pages) in the .xml file and set the isExposed attribute to true. References: Expose Lightning Web Components for Flow Screens, Quick Actions, App Builder, and Experience Builder

When working with Apex tests that involve callouts, it's important to avoid the 'uncommitted work pending' error. This error typically occurs because DML operations (like inserts) are pending when a callout is attempted. Salesforce requires that all callouts are made before any DML operations in a transaction. To avoid this, the pattern is to insert the records before calling Test.startTest(), and then make the callout after this call. Test.startTest() marks the point where your actual test begins, and it resets the governor limits. By making the callout after this point, it ensures that the DML operations are committed and you are within a new execution context regarding governor limits.

References:

Testing HTTP Callouts by Implementing the HttpCalloutMock Interface

Understanding Execution Contexts

A sharing rule can be used to automatically give Read access to a user specified in a lookup field. Sharing rules are declarative and can be based on criteria such as the value of a lookup field. This can be done without writing code and is maintainable through the Salesforce UI.References: Salesforce Help - Sharing Rules