Salesforce Updated B2B-Commerce-Developer Exam Questions and Answers by rares

To create custom Lightning web components (LWCs), a developer must take two steps: authorize an org for an SFDX project and deploy a custom component. Authorizing an org for an SFDX project allows the developer to connect to a Salesforce org, such as a scratch org, a sandbox, or a production org, and use it as a development environment. Deploying a custom component allows the developer to push the LWC code from the local project to the org and make it available for use. Creating an Apex class is not a required step for creating custom LWCs, as not all LWCs need to use Apex. Cloning an LWC is not a required stepeither, as it is an optional way to create a new LWC based on an existing one. Salesforce References: Lightning Web Components Developer Guide: Authorize an Org for Development, Lightning Web Components Developer Guide: Deploy Your Component

To retrieve metadata about a specific object, a developer should use the getObjectInfo wire adapter. The getObjectInfo wire adapter imports data from the @salesforce/schema module and returns an object that contains information such as the object’s label, key prefix, fields, child relationships, record type infos, and theme. The getObjectMetadata wire adapter does not exist. The getObject wire adapter does not retrieve metadata, but rather returns a record object based on the record ID. The getObjectDescribe wire adapter does not exist either. Salesforce References: [Lightning Web Components Developer Guide: getObjectInfo], [Lightning Web Components Developer Guide: Import Salesforce Schema]

 A developer needs to make a call to a long running web service which is critical to finalizing their checkout process. The developer should consider the following items in their implementation:

• A new CORS entry may need to be created in Setup. CORS stands for Cross-Origin Resource Sharing, which is a mechanism that allows web browsers to make requests to servers on different domains. If the web service is hosted on a different domain than the B2B Commerce site, the developer may need to add a CORS entry in Setup to allow the browser to access the web service. This entry specifies the origin, path, and method of the request, as well as any headers or cookies that are allowed1.
• A new Named Credential may need to be created in Setup. A Named Credential is a type of metadata that stores the URL and authentication settings of a web service. By using a Named Credential, the developer can avoid hardcoding the web service URL and credentials in their code, and instead reference the Named Credential by name. This makes the code more secure and easier to maintain2.
• An Apex method returning a Continuation will need to be created. A Continuation is a special type of Apex object that allows the developer to make asynchronous calls to long running web services. By using a Continuation, the developer can avoid blocking the main thread and improve the user experience. A Continuation method must return a Continuation object, specify the web service URL and parameters, and register a callback method that handles the response3.

Option D and Option E are incorrect because they are not relevant to the scenario. Option D suggests that the developer should broker the requests to the web service, which means to use an intermediary service that manages the requests and responses. This may be useful for some scenarios, but it is not required for making a call to a long running web service. Option E suggests that the developer shouldcreate a new Remote Site in Setup, which is a way to whitelist the domains that can be accessed from Apex code. However, this is not necessary if the developer uses a Named Credential, which automatically handles the Remote Site setting2. References:

• Set Up CORS
• Named Credentials
• Continuation Class

The REST APIs in Salesforce B2B Commerce support pass-through parameter handling by passing parameters through the service handlers. This means that any parameters that are not recognized by the REST API framework will be passed to the service handler class that implements the API logic. The service handler class can then use these parameters for custom logic or validation.