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

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Total 50 questions
Question 1

Which plugin cleans the container project's target folder before Maven build?



Answer : C

In Maven, the maven-clean-plugin is used to clean the project by removing files generated at build-time in the target directory. Before a new build, cleaning the project is a common practice to ensure that no stale artifacts affect the new build. The plugin's goal clean is bound to the clean phase of the build lifecycle and can be executed with the command mvn clean.

Option A, mvn-clean-plugin, is incorrectly named; the correct name is maven-clean-plugin.

Option B, maven-scr-plugin, is related to Service Component Runtime and not to cleaning build artifacts.


Question 2

Review the following HTL code snippet:

use.testComponent='${com.adobe.core.models.TestComponent'@

testParam='testValue'}'>

Which two approaches correctly read the value of testParam in Sling model? (Choose two.)



Answer : B, C

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 @RequestAttribute annotation 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 @Inject annotation with the name attribute 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 @Named is not the correct annotation for retrieving request attributes or parameters.

Option D is incorrect because there is no @Prop annotation in Sling Models; it's likely confused with the @Property annotation which is not the correct one for this context either.


Question 3

A developer wants to replace the element name of the host element with titleLevel property of the model in HTL.

Which action would be taken to complete this task?




Answer : C

In HTL (HTML Template Language), data-sly-element is used to dynamically set the name of a DOM element. The provided option C correctly demonstrates the use of data-sly-element to replace the element name with the value of the titleLevel property of the model. The context 'unsafe' is specified because changing the element name can be a security risk if the value is not properly sanitized since it could lead to script injection vulnerabilities if used with user-provided data.

Options A and B are incorrect because they don't use the data-sly-element attribute, which is necessary to dynamically change the tag name of the element in HTL.


Question 4

What is the out-of-the-box response of the dispatcher when requesting a URL which is defined as deny in /filter setting of the dispatcher?



Answer : C

When the dispatcher encounters a URL that is defined as 'deny' in the /filter settings, the out-of-the-box response is typically a 403 Forbidden error. This HTTP status code indicates that the server understands the request but refuses to authorize it. This means the dispatcher configuration has rules set up to explicitly prevent access to certain patterns of URLs, and when such a pattern is matched, it will deny the request, resulting in a 403 response.


Question 5

A developer wants to write a Java service that will serve some data to the custom component.

Which one of the Maven modules is the place to create this service?



Answer : C

A Java service, which is a backend Java class that encapsulates some business logic or functionality, should be placed in the core Maven module of an AEM project. This module is intended for the Java code that contains OSGi services, servlets, and other Java backend code. By creating the service in the core module, it can be properly compiled, packaged, and deployed as an OSGi bundle within AEM.


Question 6

An AEM sites developer is working on the development of a 'Hello World' component and wants to facilitate the mapping of data from the JCR to Java variables.

Which feature should the developer use to provide this facilitation?



Answer : C

Sling Models is an AEM feature that allows developers to map JCR data to Java objects. It is a part of the Sling framework, which AEM is built on top of. Sling Models facilitate the decoupling of content from the rendering layer, making it easier to work with data in AEM components. By defining simple POJOs (Plain Old Java Objects) with annotations, developers can map properties from the JCR (Java Content Repository) to fields in a Java class, enabling a straightforward and type-safe way to handle the content. This is especially useful when creating components such as 'Hello World', where dynamic data needs to be fetched from the JCR and rendered on the page.

HTL and Dialogs (Option A) are used for rendering components and creating editable fields in the component dialogs, respectively, but do not facilitate data mapping to Java variables.

Client-Side Libraries (Option B) are used to manage client-side resources like JavaScript and CSS but are not involved in JCR to Java variable mapping.


Question 7

A developer wants to send a SAML Authentication Request to a specific URL of a system entity that creates, maintains, and manages identity information.

Which property of SAML Authentication Handler configuration must be configured with this URL?



Answer : A

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.


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