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| Section | Weight | Objectives |
|---|---|---|
| Data Management | 15% | - Commerce data modeling and integration
|
| Reference Implementations | 15% | - Checkout and payment architecture patterns
|
| Advanced Lightning Web Component Development | 30% | - Custom LWC development
|
| Checkout Flow Development | 10% | - Checkout customization
|
| Basic Lightning Web Component Development | 20% | - LWC enhancement
|
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質問 # 72
During checkout flow customizations, a developer receives an error on shipping cost calculation integrations with the error code: INSUFFICIENT_ACCESS_OR_READONLY.
What is causing this error?
正解：D
解説：
The error code INSUFFICIENT_ACCESS_OR_READONLY is caused by the cart being no longer in a valid Checkout State during checkout flow customizations. A cart is an object that represents a collection of products and charges that a customer intends to purchase in the storefront. A cart has a Checkout State field that indicates the current state of the checkout process for the cart. The Checkout State can have values such as Draft, InProgress, Completed, or Cancelled. A cart can only be modified or updated when it is in Draft or InProgress state. A cart cannot be modified or updated when it is in Completed or Cancelled state. If an attempt is made to modify or update a cart that is in Completed or Cancelled state, an error with the code INSUFFICIENT_ACCESS_OR_READONLY will be thrown. This error means that the user does not have permission to edit or delete a record because it is read-only or locked. The storefront user does not have access to the Cart Delivery Method object is not a cause of this error code, as it is not related to the cart checkout state or data modification. The Cart Delivery Method object is an object that stores information about the delivery method selected for a cart in the storefront. An error has occurred during the cart shipping charge integration is not a cause of this error code either, as it is not related to the cart checkout state or data modification. The cart shipping charge integration is an integration that calculates and applies shipping charges to a cart based on various factors such as delivery method, location, weight, volume, etc. The storefront user does not have access to custom fields on the Order Delivery Method object is not a cause of this error code either, as it is not related to the cart checkout state or data modification. The Order Delivery Method object is an object that stores information about the delivery method selected for an order summary in the storefront. Salesforce B2B Commerce Developer Guide: Cart Object, [B2B Commerce Developer Guide: Cart Delivery Method Object], [B2B Commerce Developer Guide: Order Delivery Method Object], [Salesforce Help: Common Error Messages]
質問 # 73
A developer is on a tight timeline and needs to implement a Lightning web component which can read, create and modify single records. What is the recommended path forward?
正解：D
解説：
To implement a Lightning web component which can read, create and modify single records, the recommended path forward is to use Lightning Data Service. Lightning Data Service is a service that provides access to Salesforce data and metadata, cache management, and data synchronization across components. Lightning Data Service allows developers to use standard components or base components to perform CRUD (create, read, update, delete) operations on single records without writing Apex code or SOQL queries. Lightning Data Service also handles data caching, performance optimization, and conflict resolution automatically. Using base components is not a sufficient way to implement a Lightning web component which can read, create and modify single records, as base components are only user interface elements that do not provide data access or manipulation functionality by themselves. Base components need to be used with Lightning Data Service or other services to perform CRUD operations on single records. Writing custom functions against a wire adapter is not a recommended way to implement a Lightning web component which can read, create and modify single records, as it involves writing complex and error-prone JavaScript code that may not be efficient or scalable. Writing custom functions against a wire adapter also requires handling data caching, performance optimization, and conflict resolution manually. Creating an Apex controller is not a recommended way either, as it involves writing Apex code that may not be necessary or optimal for performing CRUD operations on single records. Creating an Apex controller also requires exposing Apex methods using @AuraEnabled or @RemoteAction annotations and invoking them from JavaScript code using imperative calls or promises. Salesforce Lightning Web Components Developer Guide: Access Salesforce Data,Lightning Web Components Developer Guide: Base Components, [Lightning Web Components Developer Guide: Call Apex Methods]
質問 # 74
What are two purposes of the Shadow DOM in a Lightning web component?
正解：A、C
解説：
According to theLightning Web Components Developer Guide, Shadow DOM is a standard that encapsulates the internal document object model (DOM) structure of a web component. Encapsulating the DOM gives developers the ability to share a component and protect the component from being manipulated by arbitrary HTML, CSS, and JavaScript. Shadow DOM also provides style and behavior isolation for a web component, which means that the styles and scripts defined inside a component do not affect the rest of the page, and vice versa. Therefore, the purposes of the Shadow DOM in a Lightning web component are to encapsulate the internal DOM structure of a web component (A) and to allow components to be shared while protecting them from being manipulated by arbitrary code (B). The other options are incorrect because Shadow DOM does not allow direct access to the document object model of the component , nor does it allow older JavaScript libraries to manipulate the tagging structure (D).Lightning Web Components Developer Guide,Understand the Shadow DOM Unit
質問 # 75
In which three ways should useful debugging information in Salesforce B2B Commerce implementation be garnered? (3 answers) A) Enabling the logging token via
正解：B、D、E
解説：
Useful debugging information in Salesforce B2B Commerce implementation can be garnered in three ways:
Enabling the logging token via Admin and subsequently inspecting the logs via the browser console. This will enable logging messages and errors to the browser console, which can be viewed by opening the Developer Tools in the browser. The logging token can be enabled by setting the value of CO.logToken to true in CCAdmin.
Enabling debugging options for the current user and visually inspecting the Salesforce debug logs. This will enable logging messages and errors to the Salesforce debug logs, which can be viewed by opening the Debug Logs page in Salesforce Setup. The debugging options can be enabled by creating a Debug Level and a Trace Flag for the current user in Salesforce Setup.
Logging into the community as a system administrator to identify any potential permissions or Visualforce exceptions. This will allow viewing any errors or warnings that may occur on the community pages due to insufficient permissions or Visualforce issues. The system administrator can also access CCAdmin and other tools from within the community. Salesforce B2B Commerce and D2C Commerce Developer Guide,Logging, Debug Your Code
質問 # 76
Which cart item type is created with the Cart Delivery Group Method after the shipping integration?
正解：B
解説：
A cart item with a type of Charge is created with the Cart Delivery Group Method after the shipping integration. A shipping integration is an integration that calculates and applies shipping costs and options to a cart or an order based on various factors, such as product weight, dimensions, quantity, location, and carrier service level. A shipping integration can use either an external shipping service provider or custom Apex code to perform the shipping calculation. The Cart Delivery Group Method is a method that determines how products are grouped into delivery groups based on their shipping methods and addresses. A delivery group is a logical grouping of products that are shipped together using the same shipping method and address. After performing the shipping calculation for each delivery group, the shipping integration creates a cart item with a type of Charge and a charge type of Shipping for each delivery group. These cart items represent the shipping costs and options that are applied to each delivery group. A cart item with a type of Surcharge, Shipping, or Delivery does not exist or is not related to the shipping integration. Salesforce [B2B Commerce Developer Guide: Shipping Integration], [B2B Commerce Developer Guide: Cart Delivery Group Method]
質問 # 77
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