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

Answer : C

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.

Answer : C

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.

Answer : A

The CQ_JVM_OPTS parameter 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. The suspend=n flag means the JVM will not suspend at the start but will wait for a debugger to connect on port 8000. This effectively runs the AEM instance in debug mode, which is useful for development and troubleshooting.

Option B is incorrect because the suspend=n setting 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.

Answer : C

When using a Network File System (NFS) for AEM, CachingFileDataStore is recommended because it caches binary data on the file system and stores only references to the binaries in the repository. This can be beneficial for performance, as it reduces the latency associated with reading binaries over the network, especially when NFS is being used. The caching layer helps in optimizing read operations by keeping a local cache of frequently accessed data.

S3DataStore is used when integrating with Amazon S3 for storage.

FileDataStore does not provide caching capabilities and would not be as efficient as CachingFileDataStore when using NFS.

Answer : A, D

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 or deactivation. 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.

Answer : C

When customizing a core component in AEM, setting the sling:resourceSuperType property 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.

Answer : C

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 logger com.adobe.granite.auth.saml is the appropriate logger that should be created and configured to capture and display debug logs related to SAML authentication processes.