Master Salesforce B2B Commerce Developer Exam with Reliable Practice Questions

Correct : B, D

For maintainable and scalable Lightning Web Component development, it's recommended to style components by targeting the :host pseudo-element in the component's CSS file and by applying Salesforce Lightning Design System (SLDS) classes to internal elements. These practices ensure consistent styling that aligns with Salesforce's design standards and provides a clear separation of concerns between component structure and styling.

Correct : D

To retrieve metadata about a specific object in a Lightning Web Component, a developer can use the getObjectInfo wire adapter. This adapter provides access to the metadata of a specified Salesforce object, including fields, record types, and layouts, which is essential for dynamic component rendering based on the object's schema.

Correct : A, B

To bring picklist values into a Lightning Web Component (LWC), a developer needs to import specific modules from the lwc and lightning/uiObjectInfoApi namespaces. The getPicklistValues function from the lightning/uiObjectInfoApi module is used to fetch the picklist values based on record type and field metadata. Additionally, importing { LightningElement, wire } from lwc is essential for defining the LWC class and using the @wire decorator to wire the getPicklistValues to a property or function. Salesforce documentation on LWC and utilizing the uiObjectInfoApi provides clear guidelines on how to implement this functionality.

Correct : A, B, D

Salesforce documentation clarifies the interoperability between Aura and Lightning Web Components (LWCs). An Aura component can indeed contain another Aura component, as well as a LWC, allowing for a mix of component technologies in a single application. However, due to the architectural and design principles of LWCs, a LWC cannot contain an Aura component. This is because LWCs are designed to be lightweight and leverage web standards, which makes them not fully compatible with the older Aura component framework in terms of containment.

Correct : A, B, C

In Lightning Web Components, the decorators @api, @track, and @wire play crucial roles. The @api decorator is used to expose public properties and methods, making them accessible to other components. The @track decorator is used to mark private properties as reactive, so the UI updates when their values change. The @wire decorator is used to wire Apex methods or Salesforce data to the component. Salesforce documentation on LWC development extensively covers these decorators, explaining their usage and best practices.