AD0-E128 Practice Online

Question 1

A developer is debugging an issue where a Sling Model is not properly adapting to the resource.

Upon

investigation, the developer notices the following Sling Model code:

@Model(adaptables = Resource.class)

public class MyCustomModel {

}

What is causing the issue?

A : The adaptable type in the @Model annotation is incorrect.

B : The title field is not properly annotated with @Inject.

C : The resource path in the init() method is hard-coded and may not be adaptable.

D : The @PostConstruct method is not properly annotated.

Answer: C

Question 2

A banking AEM application contains functionality to calculate a mortgage rate based on user input. A servlet in place calculates the result in the backend. A call to an internal third-party REST service is required to retrieve the average object value based on a given zip code. The following three service interfaces are used: MortgageCalculationServlet, MortgageCalculationService and ObjectValueLookupRestService, where MortgageCalculationServlet has a dependency to MortgageCalculationService and MortgageCalculationService has a dependency to ObjectValueLookupRestService. The calculation has many combinations of input parameters and edge cases, so the JUnit coverage must be as high as possible. Which two strategies should the developer use to ensure testability of the application code? (Choose two)

A : Use a mock framework to be able to create and inject mocks in the test code

B : Use BundleContext.getServiceReference(...) and BundleContext.getService(...) in application code to look up for the required services just before usage

C : Use static methods to avoid boilerplate in application code

D : Use the standard OSGi @Reference annotation to wire the dependencies in application code

E : Deploy a third party dependency injection container to wire dependencies more efficiently in application code

Answer: A,D

Question 3

An app needs a workflow to trigger another workflow. Which type of workflow step, when run, starts another workflow model?

A : Split

B : Join

C : Process

D : Container

Answer: D

Question 4

A developer needs to customize the handling of assets in a complex workflow model where different paths process assets based on their metadata and trigger specific external services. Which approach is a best practice for implementing this solution?

A :

Use out-of-the-box Adobe Experience Manager Workflow steps and configure them through the Workflow console to handle all metadata for asset processing, using conditions in the Workflow.

B :

Write custom workflow process steps in Java to handle specific metadata conditions and integrate external services, using the Workflow API to manage dynamic branching logic.

C :

Implement a content fragment model to pre-define asset metadata, using Workflows only for publishing the fragments after external service calls are completed.

Answer: B

Question 5

A developer needs to manage content variations across different languages and regions in a multi-site setup. Which AEM feature should be used to meet this goal?

A : Experience Fragments

B : Content Fragments

C : Live Copies

D : Language Copies

Answer: D

Name:	Adobe Experience Manager Sites Developer Professional
Exam Code:	AD0-E128
Certification:	Adobe Experience Manager
Vendor:	Adobe
Total Questions:	175
Last Updated:	Oct 22, 2026

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