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| Section | Weight | Objectives |
|---|---|---|
| Integration & APIs | 20% | - Integration with external systems (ERP, PIM) - Apex integrations, callouts and platform events - REST, GraphQL and SOAP APIs usage |
| Business Logic & Order Management | 20% | - Checkout flow customization - Pricing rules, promotions and entitlements - Order processing, workflows and business rules |
| Security, Performance & Deployment | 10% | - Performance optimization and governor limits - Security model and access control - Deployment and change management |
| Storefront Customization & UI Development | 25% | - Storefront component extension and customization - Experience Builder and page design - Lightning Web Components (LWC) development |
| B2B Commerce Architecture & Data Model | 25% | - Object relationships and data structure - Core data model: products, catalogs, accounts, orders, pricing - Platform architecture and reference implementation |
>> Salesforce AP-202 Exam Syllabus <<
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NEW QUESTION # 33
How can a developer establish communication between components that are not in the same DOM (Document Object Model) tree?
Answer: A
Explanation:
To establish communication between components that are not in the same DOM (Document Object Model) tree, a developer can use the publish-subscribe pattern. The publish-subscribe pattern is a messaging pattern that allows components to communicate with each other without being directly connected or aware of each other. The components can publish events to a common channel and subscribe to events from that channel. The channel acts as a mediator that delivers the events to the subscribers. The developer can use a custom library or a Salesforce platform service, such as Lightning Message Service or Platform Events, to implement the publish-subscribe pattern. Configuring the targets property is not a way to communicate between components that are not in the same DOM tree, as it only defines where a component can be used in an app. Using dispatch events is not a way either, as it only works for components that are in the same DOM tree or have a parent-child relationship. Using @api decorators is not a way either, as it only exposes public properties or methods of a component to other components that use it. Salesforce Lightning Web Components Developer Guide: Communicate Across Salesforce UI Technologies,Lightning Web Components Developer Guide: Communicate with Events, [Lightning Web Components Developer Guide: Communicate with Properties]
NEW QUESTION # 34
A developer needs to loop through a series of child components which are tiles. What is the correct syntax for this if the child component is called appTile?
Answer: D
Explanation:
The correct syntax for looping through a series of child components which are tiles is option A. Option A uses the for:each directive to iterate over a collection of items and render a template block for each item. The for:each directive requires an expression that evaluates to an array or an iterable object and an item alias that represents the current item in the iteration. The item alias can be used to access the item's properties or pass them to child components. In option A, the expression is appTiles, which is an array of objects that represent app tiles, and the item alias is appTile, which represents the current app tile object in the iteration. The appTile object's properties, such as name, description, and icon, are passed to the app-tile child component using attributes. Option B is incorrect because it uses an invalid syntax for the for:each directive. The for:each directive requires a colon (:) after the for keyword, not an equal sign (=). Option C is incorrect because it uses an invalid syntax for the for:each directive. The for:each directive requires an item alias that represents the current item in the iteration, not a key alias that represents the current index in the iteration. Option D is incorrect because it uses an invalid syntax for the template tag. The template tag requires a closing tag (</template>), not a self-closing tag (<template/>). Salesforce Lightning Web Components Developer Guide: Iterate Over a Collection, Lightning Web Components Developer Guide: Template Syntax
NEW QUESTION # 35
A developer is working in Visual Studio Code on a previously deployed project which is rather large and deployments are time consuming. The developer wants to know if a CSS file containing small changes was actually deployed to the org. What is one way this can be accomplished?
Answer: C
Explanation:
To know if a CSS file containing small changes was actually deployed to the org, one way that a developer can accomplish this is by right-clicking the CSS file and choosing Diff File Against Org. Diff File Against Org is an option that allows the developer to compare a local file with its remote version in the org using Salesforce CLI commands. The developer can use Visual Studio Code to execute these commands by right-clicking on files or folders in the project and choosing from various diff options. Right-clicking the CSS file and choosing Diff File Against Org allows the developer to see the differences between the local CSS file and the remote CSS file in the org side by side in Visual Studio Code. This way, the developer can verify if their changes were deployed successfully or not. Clicking the Tools menu and selecting Diff Styles Against Org... is not a valid way to know if a CSS file was deployed to the org, as there is no such option in Visual Studio Code or Salesforce CLI. Right-clicking the folder for the component and choosing Diff Styles Against Org is not a valid way either, as there is no such option in Visual Studio Code or Salesforce CLI. Right-clicking the folder for the component and choosing Diff Files Against Org is not a valid way either, as it will compare all the files in the folder, not just the CSS file, which may not be efficient or necessary. Salesforce [Salesforce CLI Command force:source:diff], [Salesforce Developer Tools for Visual Studio Code]
NEW QUESTION # 36
A developer is building a custom component in Lightning web components (LWC) that has a grandchild component that needs to pass information to the grandparent component. What is the correct way to demonstrate the passing of a message from the grandchild component to the grandparent component?
Answer: C
Explanation:
The correct way to demonstrate the passing of a message from the grandchild component to the grandparent component in LWC is to use the PubSub library. The PubSub library is a utility that enables Lightning web components to communicate across the DOM tree without using intermediaries. The grandchild component can publish a message to a channel, and the grandparent component can subscribe to that channel and receive the message. This way, the communication is decoupled and does not depend on the component hierarchy. Option B shows the correct syntax for using the PubSub library to pass a message from the grandchild component to the grandparent component. Option A is incorrect because it uses th@apidecorator to expose a property on the grandchild component, which is not a valid way to communicate with the grandparent component. Option C is incorrect because it uses the@wiredecorator to wire a property on the grandchild component to a function on the grandparent component, which is also not a valid way to communicate with the grandparent component. Option D is incorrect because it uses the@trackdecorator to track a property on the grandchild component, which is not a valid way to communicate with the grandparent component.Communicate Across the DOM | Lightning Web Components Developer Guide,Child to grandparent communication in LWC,PubSub Library for Lightning Web Components
NEW QUESTION # 37
A developer is working on a storefront and is seeing unexpected Ul behavior in one of the custom Lightning web components (LWCs) their team has built.
How should the developer investigate the issue?
Answer: A
Explanation:
To investigate the issue of seeing unexpected UI behavior in one of the custom Lightning web components (LWCs) their team has built, the developer should enable Debug Mode for a storefront user, log in to the storefront, and use Browser Inspection tools and debugger points. Debug Mode is a feature that allows developers to debug and troubleshoot custom LWCs in the storefront by disabling performance optimizations and enabling source maps. Source maps are files that map the minified or obfuscated code to the original source code, making it easier to read and debug. To enable Debug Mode for a storefront user, the developer can go to Setup, enter Users in the Quick Find box, select Users, click Edit next to the user name, and select Debug Mode. After enabling Debug Mode, the developer can log in to the storefront as the user and use Browser Inspection tools and debugger points to inspect and debug the custom LWC. Browser Inspection tools are tools that are built into web browsers that allow developers to examine and modify the HTML, CSS, JavaScript, and other aspects of a web page. Debugger points are statements that are added to the JavaScript code of a LWC that pause the execution of the code at a certain point and allow the developer to inspect the values of variables, expressions, and other elements. Enable Debug Mode for a storefront user, load the LWC in Visual Studio (VS) Code, attach to session, and view debug logs in VS Code is not a valid way to investigate the issue of seeing unexpected UI behavior in one of the custom LWCs their team has built, as it is not possible to attach to a session or view debug logs for LWCs in VS Code. Enable debug logs for a storefront user, log in to storefront and perform action, and view debug logs in Setup is not a valid way either, as debug logs do not capture information about LWCs or UI behavior. Debug logs are records of database operations, system processes, and errors that occur when executing a transaction or running unit tests. Identify the user, inputs, and failure, then ask Salesforce support to investigate the issue with the custom LWC is not a valid way either, as it is not a recommended or efficient way of debugging or troubleshooting custom LWCs. Salesforce support may not be able to provide assistance or guidance for custom LWCs that are developed by third-party developers. Salesforce B2B Commerce Developer Guide: Debug Lightning Web Components,Lightning Web Components Developer Guide: Debug Your Code,Salesforce Help: Debug Logs
NEW QUESTION # 38
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