Which two guidelines should a developer consider when migrating aura components to LWC?
Correct Answer: A,D
Explanation When migrating aura components to LWC, a developer should consider two guidelines: migrate one component and then determine whether additional effort would make sense and start with simple components that only render UI. Migrating one component and then determining whether additional effort would make sense allows the developer to evaluate the benefits and costs of migration and decide whether to continue or stop. Migrating simple components that only render UI allows the developer to leverage the performance and modern features of LWC without much complexity or dependency on other components or services. Starting with migrating trees of components (components within components) is not a good guideline, as it can introduce more challenges and dependencies that can complicate the migration process. Forcing all developers to write any new components using Lightning web components is not a good guideline either, as it can create inconsistency and confusion among developers and users. Salesforce References: [Lightning Web Components Developer Guide: Migrate Aura Components to Lightning Web Components], [Lightning Web Components Developer Guide: Migration Considerations]
Question 52
A developer has the task to bring some historical data into an org. The data must reside in the org, but cannot be populated in standard or custom objects. The customer is fine with developers building Ul components to surface this data on a case-by-case basis. Which option allows a developer to meet all of these requirements?
Correct Answer: A
To bring some historical data into an org, the data must reside in the org, but cannot be populated in standard or custom objects, and the customer is fine with developers building UI components to surface this data on a case-by-case basis, the option that allows a developer to meet all of these requirements is big objects. Big objects are a type of object that can store and manage massive amounts of data on the Salesforce platform. Big objects can store up to billions of records and are accessible through a subset of SOQL or custom user interfaces. Big objects are not subject to the same storage limits or performance issues as standard or custom objects and are suitable for storing historical or archived data that does not need to be updated frequently. Big objects can be defined using Metadata API or declaratively in Setup. Lightning Canvas is not an option that allows a developer to meet all of these requirements, as it is a framework that allows developers to integrate third-party applications into Salesforce. Lightning Canvas does not store data in the org, but rather displays data from external sources using an iframe. External objects are not an option either, as they are a type of object that map to data stored outside Salesforce. External objects do not store data in the org, but rather access data from external systems using OData services. Lightning Out is not an option either, as it is a feature that allows developers to use Lightning components outside Salesforce. Lightning Out does not store data in the org, but rather renders components on external web pages or applications. Salesforce Reference: Salesforce Help: Define Big Objects, Salesforce Help: Lightning Canvas Developer's Guide, Salesforce Help: External Objects, Salesforce Developer Blog: Lightning Out
Question 53
What is the fastest route to setting up a B2B Commerce Store as a developer?
Correct Answer: C
The fastest route to setting up a B2B Commerce store as a developer is to use sfdx setup scripts. Sfdx setup scripts are scripts that use Salesforce CLI commands to automate the creation and configuration of a B2B Commerce store. The scripts can perform tasks such as creating scratch orgs, installing packages, importing data, assigning permissions, and deploying code. The scripts can save time and effort for developers who need to set up a B2B Commerce store quickly and easily. Setting up B2B Commerce on Lightning Experience manually is not the fastest route to setting up a B2B Commerce store, as it involvesmany steps and actions that can be tedious and error-prone. Creating a new store in the Commerce app is not the fastest route either, as it also requires manual configuration and customization of various settings and features. Importing a previously exported store archive is not the fastest route either, as it depends on the availability and quality of the store archive and may not reflect the latest changes or updates. Salesforce References: [B2B Commerce Developer Guide: Set Up Your Development Environment], [B2B Commerce Developer Guide: Create Your Store]
Question 54
Which three decorators can be used in Lightning Web Components?
Correct Answer: A,B,C
In Lightning Web Components, the decorators@api,@track, and@wireplay crucial roles. The@apidecorator 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 @wiredecorator 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.
Question 55
Universal Containers (UC) is ready to build a tax provider class using the interfaces available in the Buyer Experience SDK. When creating a tax provider, what are three things that a developer should consider first?
Correct Answer: A,B,D
When creating a tax provider, three things that a developer should consider first are: steps to complete in the tax service, how to handle results, and what to implement. Steps to complete in the tax service are the actions that the developer needs to perform to connect to and use the third-party tax service provider's API or service. These steps may include authentication, authorization, request formatting, response parsing, error handling, and logging. How to handle results are the actions that the developer needs to perform to process and apply the tax calculation results from the tax service to the cart or order. These actions may include creating or updating cart items with type of Charge and charge type of Tax, applying tax adjustments or exemptions, and displaying tax amounts and details on the storefront. What to implement are the methods that the developer needs to define in their custom Apex class that implements the sfdc_checkout.TaxCalculations interface. The interface provides methods for customizing the tax calculation logic for a cart or an order, such as getTaxRatesAndRules, applyTaxAmountsAndAdjustments, and handleTaxErrorsAndExceptions. Whether to use JSON or XML is not something that the developer should consider first, as it is not a critical or relevant factor for creating a tax provider. It may depend on the format that the tax service provider supports or prefers, but it does not affect the overall functionality or performance of the tax integration. What events to fire in the Lightning web component is not something that the developer should consider first either, as it is not related to creating a tax provider. It may be an optional feature that the developer can add to enhance the user interface or user experience of their storefront, but it does not affect the core logic or functionality of the tax integration. Salesforce Reference: B2B Commerce Developer Guide: Tax Integration, [B2B Commerce Developer Guide: Tax Calculations Interface]
