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Adobe AD0-E134 Exam Syllabus Topics:
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NEW QUESTION # 26
A customer who is running an AEM application on premise reports that the application is slowing down over time and even crashes The issues seem to start occurring after a new production deployment. The AEM developer knows that the described symptoms could be caused by a memory leak.
Which two steps should be taken after confirming the problem is related to a memory issue? (Choose two.)
- A. Create a thread dump for analysis
- B. Create a heap dump for analysis
- C. Open the error log and look for messages with 'OutOfMemoryError'
- D. Analyze the request log and make sure the number of requests are below the expected threshold
- E. Increase the cache ratio of the application
Answer: A,B
Explanation:
Explanation
Creating a heap dump and a thread dump are two steps that should be taken after confirming the problem is related to a memory issue. A heap dump is a snapshot of the memory usage of the Java Virtual Machine (JVM) at a given point in time. A heap dump can be used to identify memory leaks, memory consumption patterns, and objects that occupy large amounts of memory. A thread dump is a snapshot of the state of all threads that are part of the JVM process. A thread dump can be used to identify deadlocks, blocked threads, and CPU-intensive threads. References:
https://experienceleague.adobe.com/docs/experience-manager-65/deploying/configuring/memory-analysis.html?
NEW QUESTION # 27
Which type of Cloud Manager tests are enabled for all Cloud Manager production pipelines and cannot be skipped?
- A. Ul Testing
- B. Code Quality Testing
- C. Experience Audit Testing
- D. Functional Testing
Answer: B
Explanation:
Explanation
Code Quality Testing is a type of Cloud Manager tests that are enabled for all Cloud Manager production pipelines and cannot be skipped. Code Quality Testing checks the code quality of the project using SonarQube and reports any issues or vulnerabilities. Code Quality Testing can fail the pipeline if the code quality does not meet the minimum standards defined by Adobe. References:
https://experienceleague.adobe.com/docs/experience-manager-cloud-service/implementing/testing/testing-overvi
NEW QUESTION # 28
An AEM application development team is assigned a task to create an Event-Driven Data Layer implementation for an Analytics solution.
Which Adobe recommended best practice should the developer choose?
- A. Use Adobe Experience Platform's data layer to integrate with AEM.
- B. Create a custom data layer and add each component template, and its properties to the data layer
- C. Use Adobe Client Data Layer and integrate with Core components.
- D. Create an Adobe Cloud Service configuration to use third-party tool's data layer.
Answer: C
Explanation:
Explanation
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.htm
NEW QUESTION # 29
A customer adds third-party client libraries to add some features in an existing AEM application, which will significantly reduce performance.
How should the developer optimize the site?
- A. Debug third-party client lib and fix the code.
- B. Embed client libraries to consolidate them into fewer files.
- C. Rebuild Client libraries.
Answer: B
Explanation:
Explanation
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/fu
NEW QUESTION # 30
Which configuration/section should be used to resolve the domain name by dispatcher?
- A. Configuration in vhosts file
- B. Configuration in DNS
- C. Configuration in httpd.conf
- D. Configuration in filters.any
Answer: B
Explanation:
Explanation
The configuration in DNS (Domain Name System) should be used to resolve the domain name by dispatcher.
The DNS resolves the domain names to the IP address of the web server that hosts the dispatcher. The dispatcher then matches the incoming request URL with the cached files or the AEM publish instances.
References:https://experienceleague.adobe.com/docs/experience-manager-dispatcher/using/configuring/dispatche
NEW QUESTION # 31
What two types of testing are available OOB in AEM Cloud Manager Pipeline? (Select Two.)
- A. Ul testing
- B. Code Quality testing
- C. Penetration testing
- D. Integration testing
- E. Performance testing
Answer: A,B
Explanation:
Explanation
Code Quality testing and UI testing are two types of testing that are available OOB in AEM Cloud Manager Pipeline. Code Quality testing checks the code quality of the project using SonarQubeand reports any issues or vulnerabilities. UI testing checks the functionality and usability of the project using Selenium WebDriver and reports any errors or failures. References:
https://experienceleague.adobe.com/docs/experience-manager-cloud-service/implementing/testing/testing-overvi
https://experienceleague.adobe.com/docs/experience-manager-cloud-service/implementing/testing/code-quality-t
NEW QUESTION # 32
A developer needs to create a workflow custom process step in AEM. In a custom process step, an OSGi component needs to implement the WorkflowProcess interface.
Which method should the developer implement?
- A. execute
- B. call
- C. apply
- D. submit
Answer: A
Explanation:
Explanation
The WorkflowProcess interface is the interface to be used for automatic workflow steps implemented in Java.
Classes implementing this interface define Java based processes that can be attached to a WorkflowNode and executed by the workflow engine. The method execute takes a WorkItem, a WorkflowSession and a MetaDataMap as parameters and performs the logic of the custom process step. References:
https://developer.adobe.com/experience-manager/reference-materials/6-5/javadoc/com/adobe/granite/workflow/e
NEW QUESTION # 33
A snippet throws an exception at runtime:
@Model(adaptables = {Resource.class}) public class MyCustomModel {
(SSIingObject
private Resource resource;
What should the developer add to fix it?
- A. (Optional annotation to page field
- B. throws Exception at the end of the init method declaration
- C. SlingHttpServletRequest.class to adaptables property of Model Class annotation
- D. defaultlnjectionStrategy = DefaultlnjectionStrategy property to @Model Class annotation
Answer: D
Explanation:
Explanation
The developer should add the defaultInjectionStrategy = DefaultInjectionStrategy property to the @Model Class annotation to fix the snippet. The defaultInjectionStrategy property defines how the Sling Model handles missing or null values for the injected fields. By default, the Sling Model uses the REQUIRED injection strategy, which means that all fields must have a non-null value or else an exception is thrown. By setting the defaultInjectionStrategy property to OPTIONAL, the Sling Model allows null values for the injected fields and does not throw an exception. This way, if the page field is null because the resource is not a page, the Sling Model can still work without errors. References:
https://sling.apache.org/documentation/bundles/models.htmlhttps://sling.apache.org/documentation/bundles/mod
NEW QUESTION # 34
Which option should be used to synchronize user data across publish servers in a publish farm?
- A. Vault plugin
- B. Sling Content Distribution
- C. CURL
- D. Replication Agents
Answer: B
Explanation:
Explanation
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=enhttps
NEW QUESTION # 35
AEM SPA integration provides various design models. In an application the developer chooses to use AEM as a headless CMS without using the SPA Editor SDK framework.
What would be an advantage for this design model?
- A. The content author can edit the app using AEM's content authoring experience.
- B. The developer keeps control over the app by only enabling authoring in restricted areas of the app
- C. The developer has full control over the app.
- D. The SPA is compatible with the template editor
Answer: C
Explanation:
Explanation
AEM SPA integration provides various design models for different levels of authoring capabilities and developer control. In the design model where AEM is used as a headless CMS without using the SPA Editor SDK framework, the developer has full control over the app and can use any SPA framework or library.
However, this also means that the content author cannot edit the app using AEM's content authoring experience, the SPA is not compatible with the template editor, and the developer cannot enable authoring in restricted areas of the app.
References:https://experienceleague.adobe.com/docs/experience-manager-learn/spa-editor-overview/spa-overvie
NEW QUESTION # 36
An AEM development team is working on a new multi-country application using AEM as a Cloud Service. A developer has been assigned the task for building the integration with a third-party web service. A secret key is needed to connect with this web service. The website creators will provide this key. The key is different for each type of environment (dev, stage and production) What is the recommended way to make the secret key available in the AEM application?
- A. Use a context aware configuration
- B. Use an environment variable which is then consumed by an OSGi configuration
- C. Read the key value from OSGi configuration stored in run nNdes
- D. Read the key value from a property file stored in the code base
Answer: B
Explanation:
Explanation
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/configurin
NEW QUESTION # 37
The OSGi configuration is added to a runmode specific configuration "config.author.staging" in AEM as a Cloud Service. The application fails to read the configuration.
What is a possible cause of this issue?
- A. The custom OSGi configuration runmode used (i.e., "config.author.staging") is not supported in AEM as a Cloud service.
- B. Only <service> specific OSGi configuration runmodes like "config.author" or "config.publish" are supported in AEM as a Cloud service.
- C. AEM as a Cloud service does not support OSGi configuration runmodes.
- D. OSGi configuration runmodes cannot be installed automatically on AEM as a Cloud Service. We need to install them as a package using the Package manager.
Answer: B
Explanation:
Explanation
AEM as a Cloud Service does not support custom OSGi configuration runmodes, such as
"config.author.staging". Only <service> specific OSGi configuration runmodes, such as "config.author" or
"config.publish", are supported. These runmodes are used to apply configurations to specific services, such as author or publish. The <service> specific runmodes can be combined with environment variables to achieve different configurations for different environments. References:
https://experienceleague.adobe.com/docs/experience-manager-cloud-service/implementing/deploying/configurin
NEW QUESTION # 38
On package install content that is already present in the repos must not be overwritten and if not present in the repos it must not be removed.
Which import mode should the developer use?
- A. merge
- B. replace
- C. update
Answer: C
Explanation:
Explanation
The merge import mode is used to import content that is already present in the repository without overwriting it and without removing content that is not present in the package. This mode preserves existing content properties and nodes while adding new ones from the package. This mode is useful for incremental updates or initial content seeding. References:
https://jackrabbit.apache.org/filevault/vaultfs.html#Import_Modeshttps://experienceleague.adobe.com/docs/expe
NEW QUESTION # 39
What is Out of Scope for the Pattern Detector tool, while doing an AEM upgrade?
- A. Backward Compatibility with the previous AEM Version
- B. rep:User nodes compatibility (in context of OAuth configuration)
- C. Definitions of Oak indices for compatibility
- D. OSGi bundles exports and imports mismatch
Answer: A
Explanation:
Explanation
Backward Compatibility with the previous AEM Version is out of scope for the Pattern Detector tool, while doing an AEM upgrade. The Pattern Detector tool is a tool that scans an existing AEM code base and identifies patterns that are incompatible with AEM as a Cloud Service or newer versions of AEM on-premise.
The tool does not check for backward compatibility with older versions of AEM, as this is not a requirement for upgrading. References:
https://experienceleague.adobe.com/docs/experience-manager-cloud-service/moving/cloud-migration/pattern-det
NEW QUESTION # 40
An AEM application is expected to export a content fragment in JSON format without any customization for a headless implementation.
What is the recommended approach?
- A. Use Core components to export JSON
- B. Use Sling Exporter framework
- C. Use AEM Assets HTTP API
Answer: C
Explanation:
Explanation
AEM Assets HTTP API is a RESTful API that allows access to content fragments in JSON format without any customization. The API supports CRUD operations on content fragments and their variations, as well as querying and searching for content fragments based on metadata or full-text search.
References:https://experienceleague.adobe.com/docs/experience-manager-65/assets/extending/assets-api-content
NEW QUESTION # 41
An AEM application requires LDAP Service integration to synchronize users/groups. Which two OSGi configuration are required for LDAP integration in AEM? (Select Two.)
- A. Apache Jackrabbit Oak External Login Module
- B. Apache Jackrabbit Oak CUG Configuration
- C. Apache Jackrabbit Oak Default Sync Handler
- D. Apache Jackrabbit Oak AuthorizableActionProvider
- E. Apache Jackrabbit Oak Solr server provider
Answer: A,C
Explanation:
Explanation
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.
NEW QUESTION # 42
Which configuration must be applied to enable re-fetching of cached items based on Cache Headers sent by AEM?
- A. /autolnvalidate "1"
- B. /autolnvalidate true
- C. /enableTTLtrue
- D. /enableTTL "1"
Answer: D
Explanation:
Explanation
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-inv
NEW QUESTION # 43
An AEM application has a Header and Footer authored on every page.
The customer asks for the following:
1. A centralized Header and Footer
2. The ability to create a variation for both the Header and Footer
3. Change the Header and Footer for specific time periods
4. The ability to restore a previous version for both the Header and Footer What should the developer use to meet the requirements?
- A. Custom component
- B. Experience fragment
- C. Content fragment
- D. Static template
Answer: B
Explanation:
Explanation
An experience fragment is a group of one or more components including content and layout that can be referenced within pages. Experience fragments allow authors to create variations for different channels and modify them for specific time periods. Experience fragments also support versioning and restoring previous versions.
References:https://experienceleague.adobe.com/docs/experience-manager-65/authoring/authoring/experience-fra
NEW QUESTION # 44
A development team is starting a new AEM project that is going to integrate with the Adobe Commerce platform. The developer needs to create a new AEM project using the Maven command line interface.
How can the 'mvn -B archetype:generate' command help the developer with the integration between AEM and Adobe Commerce?
- A. Using the property 'includeCommerce=y'1 the command will generate specific Commerce Core Components.
- B. Using the property 'commerceModule=AdobeCommerce' can provide a path to an external jar that integrates between the platforms.
- C. Using the property ,aemVersion=cloudl automatically provides a report with integration guidelines.
Answer: A
Explanation:
Explanation
The includeCommerce property is a boolean flag that indicates whether to include Commerce Core Components in the project or not. If set to y, the command will generate a commerce module that contains specific Commerce Core Components and their dependencies. These components can be used to integrate AEM with Adobe Commerce platform or other commerce solutions. References:
https://experienceleague.adobe.com/docs/experience-manager-core-components/using/developing/archetype/usin
NEW QUESTION # 45
If multiple configurations for the same PID are applicable, which configuration is applied?
- A. The last modified configuration is applied.
- B. A configuration factory is created and all configurations are applied.
- C. The configuration with the highest number of matching run modes is applied.
- D. The one that occurs first in the repository is applied.
Answer: C
Explanation:
Explanation
When multiple configurations for the same PID are applicable, the configuration with the highest number of matching runmodes is applied. This is because the runmodes act as a filter to select the most specific configuration for a given environment. If there is a tie between two or more configurations with the same number of matching runmodes, the one that occurs first in the repository is applied.
References:https://experienceleague.adobe.com/docs/experience-manager-65/deploying/configuring/configure-ru
NEW QUESTION # 46
An AEM application wants to set up multi-tenancy using Adobe-recommended best practices and bind multiple configurations to it. Which of the following options is recommended?
- A. import org.osgi.service.metatype.annotations.AttributeDefinition;
import org.osgi.service.metatype.annotations.ObjectClassDefinition;
@ObjectClassDefinition(name = "My configuration") - B. import org.apache.felix.scr.annotations.Component; @Component(label = "My configuration", metatype = true, factory= true)
- C. @Component(service = ConfigurationFactory.class)
@Designate(ocd = ConfigurationFactorylmpl.Config.class, factory=true) - D. import org.osgi.service.component.annotations.Component; @Component(service = ConfigurationFactory.class)
Answer: C
Explanation:
Explanation
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-configu
NEW QUESTION # 47
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