Adobe AD0-E123 Adobe Experience Manager Sites Developer Professional Exam Practice Test

In Sling Models, annotations are used to map request parameters, attributes, and properties to fields in Java classes. When an HTL script passes parameters to a Sling Model, the Sling Model can use annotations to access these parameters.

• Option B uses the@RequestAttributeannotation which allows the Sling Model to retrieve an attribute that has been set on the Sling HTTP request object. This is a valid approach to read the 'testParam' if it has been set as a request attribute.
• Option C uses the@Injectannotation with thenameattribute specifying the name of the parameter to inject. This is another valid approach to read the 'testParam' from the request.
• Option A is incorrect because@Namedis not the correct annotation for retrieving request attributes or parameters.
• Option D is incorrect because there is no@Propannotation in Sling Models; it's likely confused with the@Propertyannotation which is not the correct one for this context either.

In an AEM Single Page Application (SPA) project, the.model.jsonendpoint is used to expose the properties of a Sling Model as JSON. This is useful for SPAs that need to access component properties dynamically. The front-end developer should check the URL[homepage-path]/model.jsonto see the JSON output of the Sling Model for the new component. This endpoint provides a tree of the page content as JSON, which includes the Sling Model's exported properties for components included on the page.

The correct logger to be created for debugging SAML (Security Assertion Markup Language) within AEM (Adobe Experience Manager) is the one pertaining to the Granite platform, which is part of AEM’s internal framework dealing with authentication. The Granite framework provides services that include user, group, and permission management, and is integral to AEM's SAML authentication process. Thus, the loggercom.adobe.granite.auth.samlis the appropriate logger that should be created and configured to capture and display debug logs related to SAML authentication processes.

To create new content fragments programmatically in AEM, a developer would typically use an API provided by AEM for content fragment operations. Among the options given,FragmentTemplate.createFragment()seems to be the most fitting API method call, as it implies the use of a template to create a fragment. In practice, the Content Fragment Java API provides methods to create and manage content fragments in AEM by interacting with the underlying JCR (Java Content Repository). However, without specific API documentation, I'm relying on provided patterns that align with typical AEM Java API usage.

TheCQ_JVM_OPTSparameter in an AEM start script is used to set options for the Java Virtual Machine (JVM). The setting'-agentlib:jdwp=transport=dt_socket,address=8000,server=y,suspend=n'enables the Java Debug Wire Protocol (JDWP) agent for the JVM, allowing a debugger to attach to it. Thesuspend=nflag means the JVM will not suspend at the start but will wait for a debugger to connect on port8000. This effectively runs the AEM instance in debug mode, which is useful for development and troubleshooting.

• Option B is incorrect because thesuspend=nsetting means the JVM does not suspend on start-up.
• Option C is incorrect because this parameter is for debug mode, not for specifying the run mode of the AEM instance.

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.

When customizing a core component in AEM, setting thesling:resourceSuperTypeproperty in the new component's definition allows it to inherit features from an existing core component. This property points to the resource type of the core component that is being extended or customized. By doing so, the new component inherits the core component's logic and rendering scripts but can be customized further according to project-specific requirements.

• Option A,sling:resourceType, is used to define the primary resource type for a component and does not indicate inheritance.
• Option B,jcr:title, is used to give a human-readable title to a node in the JCR and is unrelated to component inheritance.

Updating the cache in AEM is critical to ensure that users receive the most current content without unnecessary delays. Two common methods used to update the cache include:

A. Content Updates - Content updates can trigger an invalidation or flush of the cache. When content is published or updated on the AEM author instance and replicated to the publish instance, the dispatcher cache can be set to automatically invalidate the affected pages. This ensures that the next request to these pages serves the latest content.

D. Auto-invalidation on the Dispatcher - The dispatcher can be configured to automatically invalidate cached content under certain conditions, such as when a TTL (Time To Live) expires or when specific actions occur, such as a page activation ordeactivation. This is often preferred to manual cache clearing as it can be more efficient and targeted to the specific content that has changed.

Options B and C are incorrect because restarting the AEM Author or Publish instances does not directly relate to cache update methods. These actions are more associated with system maintenance or updates and would not be standard practice for updating cached content.

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.

Within the SAML (Security Assertion Markup Language) Authentication Handler configuration in AEM, the property that must be configured with the URL of a system entity that manages identity information is the Identity Provider URL. The Identity Provider (IdP) is a core component of the SAML specification that is responsible for issuing authentication assertions and managing user identity information. Configuring the Identity Provider URL in the SAML Authentication Handler ensures that the authentication requests are directed correctly to the IdP.

In Adobe Experience Manager (AEM), a transient workflow is designed for short-lived workflows that do not persist their state information in the repository, which means they are faster and do not leave a footprint in the repository. However, if a Process Step in a transient workflow creates a sling job, it defeats the purpose of the transient workflow because sling jobs are persisted in the repository and could generate error messages in the log files if they are not executed immediately or if there are issues with the job queue. Therefore, to maintain the transient nature of the workflow, Process Steps that create sling jobs should be avoided.

• The Container Step (Option A) is used to group other workflow steps and does not inherently create sling jobs.
• The Goto Step (Option B) is used for branching logic and also does not create sling jobs.

In the Apache Felix Web Console, which is the OSGi management console of AEM, components are managed under the "Components" tab. The provided OSGi component, a servlet in this case, can be disabled by navigating to the "Components" tab, where all the active components are listed. Once the specific servlet is located, it can be disabled by clicking on the "Disable" action button associated with that component. This does not remove the servlet from the system; it simply stops it from being active.

• Option A is incorrect because the "Bundle Resource Provider" tab does not deal with enabling or disabling of components.
• Option B is also incorrect because the "Services" tab provides information about services but does not provide a direct way to disable them.

AEM service pack release notes typically include information that helps users understand the changes that the service pack will bring to their AEM instance. These release notes commonly include:

A. Deprecated features - This section informs users about the features that are being deprecated with the current release and guides them on migrating away from deprecated features to the recommended alternatives.

B. Known issues - This section provides information about any issues or bugs that are known at the time of the release, which might not yet be fixed. It often includes workarounds for these issues if they are available.

• Option C, "Next service pack release date," is not typically included because release dates are subject to change and are usually communicated through official channels closer to the actual release.
• Option D, "Download link to AEM jar," is not included in the release notes but is typically available through the Adobe Software Distribution site or Cloud Manager for AEM as a Cloud Service.

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.

In a Maven project, the<version>property is used to specify the version of the project itself. This version can include the version of the AEM project being built if that's the convention used in the project's versioning strategy. It's typically specified in thepom.xmlfile at the root of the project and is inherited by all the modules of the project unless they specify a different version locally in their respectivepom.xmlfiles.