AD0-E134 Questions and Answers

The correct tool to use for looking up Adobe Identity Management System (IMS) users by email and returning their IMS IDs is the IMS Lookup Tool. This tool is specifically designed to interact with the Adobe Identity Management System (IMS) and provides functionality to search for user details using various criteria such as email addresses.

Steps to use the IMS Lookup Tool:

Access the IMS Lookup Tool: Navigate to the IMS Lookup Tool interface. This tool is typically available through the Adobe Admin Console or as a part of Adobe's suite of administrative tools.

Authenticate: Ensure that you have the necessary permissions to use the tool. Authentication may be required, often through your Adobe ID and associated admin privileges.

Search by Email: Enter the email address of the user you want to look up in the search field.

Retrieve IMS ID: The tool will return the IMS ID associated with the provided email address.

This tool is essential for managing user identities and integrating with various Adobe services that rely on IMS for authentication and authorization.

References:

Adobe IMS Documentation

Adobe Admin Console

Sling Content Distribution is a feature that allows synchronizing user data across publish servers in a publish farm. Sling Content Distribution uses agents to distribute content from one instance to another using a publish-publish topology. Sling Content Distribution can be configured to synchronize user data under /home/users and /home/groups paths, as well as their ACLs. References: https://experienceleague.adobe.com/docs/experience-manager-65/administering/security/sync.html?lang=en https://experienceleague.adobe.com/docs/experience-manager-learn/sites/deploying/sling-content-distribution.html?lang=en

The /enableTTL “1” configuration must be applied to enable re-fetching of cached items based on Cache Headers sent by AEM. This configuration enables the Time To Live (TTL) feature of dispatcher, which allows dispatcher to check the Cache-Control and Expires headers of the cached files and re-fetch them from AEM if they are expired. References:https://experienceleague.adobe.com/docs/experience-manager-dispatcher/using/configuring/page-invalidation.html?lang=en#time-based-cache-invalidation

To resolve the domain name by the dispatcher, you should configure it in the vhosts file. The vhosts file is part of the Apache HTTP server configuration and allows you to define how requests for different domain names are handled. This is crucial for setting up virtual hosts, which is essential for resolving domain names and directing them to the appropriate content served by your AEM instance.

Here are the detailed steps to configure domain name resolution in the vhosts file:

Locate the vhosts file: The file is typically located in the conf directory of your Apache HTTP server installation. Common paths are:

/etc/httpd/conf/httpd.conf (on many Linux systems)

/usr/local/apache2/conf/httpd.conf (if installed from source)

Edit the vhosts file: Open the file with a text editor. You might need superuser permissions to edit this file.

Add a VirtualHost directive: Define a new VirtualHost block for your domain. For example:

ServerName www.example.com

ServerAlias example.com

DocumentRoot "/path/to/your/document/root"

# Dispatcher configuration

SetHandler dispatcher-handler

ModMimeUsePathInfo On

AllowOverride None

Options FollowSymLinks

Require all granted

 ServerName specifies the primary domain name.

ServerAlias allows you to specify additional names that should resolve to the same content.

DocumentRoot specifies the directory from which the content should be served.

The section includes the Dispatcher handler configuration.

 Restart Apache: After saving the changes to the vhosts file, restart the Apache server to apply the changes.

sudo systemctl restart httpd

# or

sudo service apache2 restart

References:

Adobe Experience Manager Dispatcher Configuration

Apache HTTP Server Documentation on VirtualHost

The @Component(service = ConfigurationFactory.class) @Designate(ocd = ConfigurationFactorylmpl.Config.class,factory=true) option is recommended for creating a multi-tenancy configuration and binding multiple configurations to it. This option uses the OSGi R6 annotations to define a component that provides a service of type ConfigurationFactory and designates a class that contains the configuration properties. The factory=true attribute indicates that multiple configurations can be created for this component. References:https://experienceleague.adobe.com/docs/experience-manager-65/deploying/configuring/osgi-configuration-settings.html?lang=en#creating-factory-configurations

Utilizing model props to drill down and access or set the state on desired components is the least complex approach for sharing information between Single Page Application (SPA) components in AEM.

Here’s why using model props is effective:

Simplicity: This approach leverages the existing component hierarchy and properties, making it straightforward to pass data between components.

Direct Access: Model props allow for direct access to the state and properties of parent or sibling components, enabling easy data sharing.

Minimal Setup: Unlike implementing a state library or customizing container components, using model props requires minimal additional setup, reducing complexity and potential overhead.

Steps to utilize model props for state management:

Define the State in the Parent Component: Ensure that the parent component maintains the state that needs to be shared.

Pass Props to Child Components: Pass the necessary state and any setter functions as props to the child components. For example, in a React-based SPA, you can do this using JSX syntax:

function ParentComponent() {

const [sharedState, setSharedState] = useState(initialState);

return (

);

}

Access and Modify State in Child Components: In the child components, access and modify the shared state using the props passed from the parent:

function ChildComponentA({ sharedState, setSharedState }) {

return (

);

}

By using this approach, you ensure a simple and effective way of managing and sharing state across components in your SPA, adhering to best practices for component-based architecture.

References:

React Documentation on Props

AEM SPA Editor Documentation

The recommended path to override /libs standard functionality is /apps. The /apps folder contains application-specific code and configuration that can extend or override the default functionality provided by /libs. The /apps folder has precedence over the /libs folder, meaning that if there are two resources with the same path under both folders, the one under /apps will be used. References: https://experienceleague.adobe.com/docs/experience-manager-cloud-service/implementing/developing/aem-project-content-package-structure.html?lang=en#repository-restrictions https://experienceleague.adobe.com/docs/experience-manager-learn/foundation/development/set-up-a-local-aem-development-environment.html?lang=en#the-aem-repository

In AEM as a Cloud Service environment, the repository areas /apps and /libs are considered as immutable, meaning that they cannot be modified at runtime by any means. These areas contain application code and configuration that are deployed via Cloud Manager and are read-only for security and performance reasons. Any changes to these areas require a new deployment via Cloud Manager. References: https://experienceleague.adobe.com/docs/experience-manager-cloud-service/implementing/deploying/overview.html?lang=en#repository-restrictions https://experienceleague.adobe.com/docs/experience-manager-cloud-service/implementing/developing/aem-project-content-package-structure.html?lang=en#repository-restrictions

The /cacheroot property under /cache in the dispatcher.any file identifies the directory where cached files are stored. It is a relative or absolute path to the cache root directory. The dispatcher creates a subdirectory for each virtual host under this directory and stores thecached files there. References:https://experienceleague.adobe.com/docs/experience-manager-dispatcher/using/configuring/dispatcher-configuration.html?lang=en#cache

The Apache Jackrabbit Oak External Login Module and Apache Jackrabbit Oak Default Sync Handler are the two OSGi configurations that are required for LDAP integration in AEM. The External Login Module defines how AEM connects to the LDAP server and authenticates users against it. The Default Sync Handler defines how AEM synchronizes users and groups from the LDAP server to the repository. References:https://experienceleague.adobe.com/docs/experience-manager-65/administering/security/ldap-config.html?lang=en#ldap-integration

A mock framework is a tool that allows creating mock objects that simulate the behavior of real objects in a controlled way. A mock framework can be used in a unit test to inject the EmployeeService dependency into the CalculationService and verify its interactions. This way, the unit test can focus on testing the logic of the CalculationService without relying on the actual implementation of the EmployeeService.References: https://sling.apache.org/documentation/development/sling-testing-tools.html https://wcm.io/testing/aem-mock/usage.html

The /glob attribute is mandatory for all filter rules in the dispatcher configuration. It specifies a pattern that is matched against the incoming request URL. If the pattern matches, the rule is applied. The /glob attribute can use wildcards (*) and placeholders ($1, $2, etc.) to match parts of the URL. References:https://experienceleague.adobe.com/docs/experience-manager-dispatcher/using/configuring/dispatcher-configuration.html?lang=en#filter-rules

The warning WARN* Traversed 1000 nodes with filter Filter (query=select…) indicates that the query is performing a traversal instead of using an index. This results in poor performance, especially when the client has a large number of nodes (e.g., more than 100,000).

To resolve this issue, you should create a custom Oak index for the custom page property. This ensures that the queries can leverage the index for efficient data retrieval.

Steps to create a custom Oak index:

Define the Oak Index:

Navigate to the /oak:index node in CRXDE Lite (http://localhost:4502/crx/de).

Create a new node of type oak:QueryIndexDefinition.

Configure the Index:

Set the properties of the new index node to define the indexing rules for the custom page property.

{

"jcr:primaryType": "oak:QueryIndexDefinition",

"type": "property",

"propertyNames": ["customPageProperty"],

"reindex": true,

"async": "async"

}

Deploy and Reindex:

Save the changes and initiate a reindexing process.

Ensure that the reindex flag is set to true for the newly created index.

Validate the Index:

Use the Index Manager or the AEM Web Console to validate that the new index is enabled and functioning correctly.

By creating a custom Oak index for the custom page property, the queries will be optimized to use the index, significantly improving the search performance and resolving the client's issue.

References:

Adobe Experience Manager - Oak Indexing

Apache Jackrabbit Oak - Indexing

The recommended way to make the secret key available in the AEM application is to use an environment variable which is then consumed by an OSGi configuration. This way, the secret key is not stored in the code base or in the repository, but rather in a secure and encrypted way in the Cloud Manager environment variables. The OSGi configuration can use a placeholder to reference the environment variable and inject its value at runtime. References: https://experienceleague.adobe.com/docs/experience-manager-cloud-service/implementing/deploying/configuring-osgi.html?lang=en#environment-variables https://experienceleague.adobe.com/docs/experience-manager-cloud-service/implementing/deploying/environment-variables.html?lang=en

Adobe Client Data Layer is a JavaScript library that provides a standardized way to collect, structure, and manage data on a web page. It can be used to implement an event-driven data layer for analytics solutions. It integrates with Core components and allows authors to configure data layer properties for each component. It also supports custom events and data sources. References: https://experienceleague.adobe.com/docs/experience-manager-core-components/using/developing/data-layer.html?lang=en https://github.com/adobe/adobe-client-data-layer

Embedding client libraries is a technique that allows combining code from multiple client libraries into a single file. This reduces the number of network requests and improves performance. Embedding client libraries can be done by using the embed property of the cq:ClientLibraryFolder node and specifying the categories of the client libraries to be embedded. References: https://experienceleague.adobe.com/docs/experience-manager-cloud-service/content/implementing/developing/full-stack/clientlibs.html?lang=en#embed https://experienceleague.adobe.com/docs/experience-manager-65/developing/introduction/clientlibs.html?lang=en#embedded-files