Adobe AD0-E123 - Adobe Experience Manager Sites Developer Professional

When defining a blueprint configuration in AEM, the content author must adhere to certain structure rules to ensure the proper functioning of the live copy mechanism. The rules include:

B. The immediate child pages of the root are language branches of the website - This structure is commonly used in AEM to organize content according to language and regional variations, allowing for more manageable and scalable content management across different locales.

D. The website should have a single page as the root - Having a single root page for a website is a standard practice in AEM as it simplifies the content hierarchy and providesa clear entry point for the site structure. This root page then serves as the source for live copies.

Options A and C are not strict requirements for a blueprint configuration. AEM does not mandate that the root of each language branch has at least two child pages or that each language page must have a country child page. These decisions are usually based on the specific content structure and organizational needs of the website.

When the dispatcher encounters a URL that is defined as 'deny' in the /filter settings, the out-of-the-box response is typically a 403 Forbidden error. This HTTP status code indicates that the server understands the request but refuses to authorize it. This means the dispatcher configuration has rules set up to explicitly prevent access to certain patterns of URLs, and when such a pattern is matched, it will deny the request, resulting in a 403 response.

In AEM, OSGi configurations are typically managed within theui.appsMaven module. This module is responsible for the application code that comprises the components, templates, and OSGi configurations among other things. By placing OSGi configurations within theui.appsmodule, a developer can ensure that these configurations are deployed to the JCR repository and become part of the application package.

In HTL (HTML Template Language), the syntax to manipulate the URI path does not provide direct methods for removing selectors. However, within Sling and HTL, the Link Handler can be extended to support such operations. For out-of-the-box HTL, the proper approach to manipulate the link would be done in the Java layer (e.g., a Sling Model or a Use-Class in HTL), and then passed to the template for rendering. Nevertheless, if such a functionality were to be implemented within HTL, it would require custom code and not use the indicated syntax options. It is important to note that options A and B with 'removeSelectors' are not standard HTL syntax.

In Maven, themaven-clean-pluginis used to clean the project by removing files generated at build-time in thetargetdirectory. Before a new build, cleaning the project is a common practice to ensure that no stale artifacts affect the new build. The plugin's goalcleanis bound to the clean phase of the build lifecycle and can be executed with the commandmvn clean.

Option A,mvn-clean-plugin, is incorrectly named; the correct name ismaven-clean-plugin.

Option B,maven-scr-plugin, is related to Service Component Runtime and not to cleaning build artifacts.

Experience Fragments in AEM can be exported to Adobe Target, and the default format for this export is HTML. When Experience Fragments are exported to Adobe Target, they are typically used for personalization and A/B testing. HTML is the format that is readily usable within Adobe Target to create variations of a page or a component for these testing purposes.

XML (Option B) and JSON (Option C) are not the default formats for exporting Experience Fragments to Adobe Target. While they can represent structured data, for the purposes of visual personalization in Adobe Target, the HTML format is used because it can directly represent the markup required for the content to be rendered in a browser.

The recommended approach to use AEM Core Components is by creating proxy components. Proxy components are essentially wrapper components within your own project that reference the core components. This practice allows developers to inherit functionality from the core components while being able to override and extend it as necessary. By using proxy components, developers can ensure that any custom styles and configurations are preserved even when the core components are updated in the future.

In an AEM as a Cloud Service environment, the preferred approach to clear dispatcher cache of required resources is to use the Replication API along with a replication flush agent. This method allows for programmatic clearing of the cache and is the standard way of invalidating cached content so that the dispatcher can retrieve fresh content from the publish instance.

Option A, "Enable the explicit cache invalidation feature in cloud manager," is not a standard feature available in Cloud Manager.

Option C, "Create a servlet, which will make an HTTP request to the dispatcher," is not advisable as it bypasses the recommended AEM replication and flushing mechanisms and could lead to inconsistencies.

A Java service, which is a backend Java class that encapsulates some business logic or functionality, should be placed in thecoreMaven module of an AEM project. This module is intended for the Java code that contains OSGi services, servlets, and other Java backend code. By creating the service in thecoremodule, it can be properly compiled, packaged, and deployed as an OSGi bundle within AEM.