Certification

Back-End Developer 7.2
Certification

Put your developer skills to the test with Liferay DXP 7.2 questions on topics including setting up the development environment, the OSGi Framework, real-world applications, and portal search.

90 Min | 50 Questions | 200 USD

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Décideurs Commerce

Exam Blueprint

90 Minutes

50 Questions

70% Passing Score

Example Test Questions

All questions are based on Liferay best practices when developing for Liferay DXP.
Unless otherwise indicated in the question, assume a new Liferay installation with no additional plugins installed and no modifications to portal properties.

Blade CLI lets you create projects that can be used only with Liferay Developer Studio.
True
False
Answer: False
Which of the following statements about OSGi are true?
(Please select all correct answers.)
A. An OSGi component is any Java class inside a bundle that is declared to be a component.
B. An OSGi component doesn’t have a lifecycle.
C.A service is an OSGi component registered to the OSGi container's service registry.
D. Declarative services (DS) is a service that handles OSGi dependency injection and allows you to publish, find, and bind services based on XML metadata and annotations.
E. An OSGi component cannot be stopped.
Answer: A, C, and D
Which command do you need to execute to close the connection to the Gogo Shell without shutting the OSGi container down?
A. shutdown
B. Exit
C. Quit
D. Disconnect
Answer: D

Topics:

Each topic will be a percentage of the test below.

Tout étendre Tout réduire

Gestion de site et de contenu

Creating personalized digital experiences across web, mobile and connected device isthe goal of Liferay DXP's framework, but to accomplish that Liferay leverages the OSGi framework to provide a development environment for modular applications.

Multi-Store — Gérez plusieurs sites de boutiques à partir d'une seule instance.

Liferay Workspace

Gestion du contenu des produits

Web apps in Liferay Portal are called portlets. Like many web apps, portlets processrequests and generate responses. In the response, the portlet returns content (e.g.HTML, XHTML) for display in browsers. In Liferay, portlets runs in a portion of the webpage. With Portlet, you can create new functionalities.

Types de produits — Vendez des produits matériels, des abonnements, des services, des packs de produits et des biens digitaux.

OSGi Bundles

OSGi Components and Services

Sharing Features

Cliquer pour agrandir Cliquer pour réduire

Liferay 7.2: Liferay OSGi Container

The Liferay platform is built on OSGi technology: Liferay applications are OSGi applications, and the platform has an embedded OSGi container.

Liferay Modules

Working With Liferay Workspace

Manage Module Dependencies

Navigation dans les catalogues et produits

Liferay Frameworks expand the capabilities of your implementations.

Construction des pages — Créez des pages en faisant glisser-déposer des applications prêtes à l'emploi, telles que l'affichage détaillé des produits, le panier d'achat, la barre de recherche, etc.

Felix Web Console

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Validation de commande

Extending and customizing Liferay Portal for your own needs.

Page de paiements — Afficher les informations de commande telles que la date, le mode de paiement, le prix total et les informations du compte client.

Liferay MVC Portlet Module

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Prix et remises

Upgrading from Liferay 6.X involves moving from plugins to Liferay modules.

Segments d'utilisateur — Créez des segments d'utilisateurs ainsi que des listes de prix, des remises ou des promotions pour chaque segment.

Access Control

Liferay Frameworks

Liferay 7.2: Angular | 04%

Liferay is compliant with many industry-proven standards.

.

JAX-WS and JAX-RS

OSGi r6

General Data Protection Regulation (GDPR)

Liferay 7.2: React | 04%

As a developer, you may sometimes want to add a persistable and manageable attribute to an existing Liferay data model.

.

Expando API

Liferay 7.2: Overriding Controller Actions | 08%

All Liferay core services have been designed and generated with the Liferay Service Builder pattern, which automatically generates service wrapper APIs for both remote and local service variants.

.

Override OSGi Service References

Liferay 7.2: Catch Portal Events | 06%

All Liferay platform applications are portlets. MVC Commands are portlet lifecycle handlers that implement the MVCCommand interface and are used to break up the controller layer into smaller and more manageable code entities. Although the Apache Struts MVC framework is being replaced with the MVC Commands in Liferay, the platform is still using the framework for some of the native functionalities like portal login and logout.

.

Override Struts Actions

Liferay 7.2: Message Bus | 04%

Lifecycle event listeners are OSGi components that implement the LifecycleAction interface.

.

Intercept Events with Model Listeners

Liferay 7.2: Portal Search | 10%

Liferay Message Bus (LMB) is a service-level API for exchanging messages inside Liferay.

.

Liferay 7.2: Customizing Portal Search

Liferay has an extensive search framework. Customization can be done on all layers, from the user interface to the indexing process and index settings.

Basic Search Concepts

Indexing and Searching

Preparing for the Exam

Achieving recognition as a Liferay Certified Professional Back-End Developer demonstrates that you understand core concepts for developing Liferay modules and know how to follow Liferay best practices to develop robust, elegant, and maintainable solutions based on the Liferay Platform. The exam is designed to be challenging, yet fair for Liferay developers. Here’s how you can succeed:

This exam is based off of the Liferay Training course Back-End Developer.
Attend the Back-End Developer training course. Attending training is not required before you sit for the exam, but much of the exam material is based on concepts covered in training.
Review additional source material. Liferay Developer Network is an amazing complementary source of information for the exam.
Get hands-on development experience. Some of the topics covered on the exam require the kind of knowledge that comes from real experience developing for the Liferay Platform. If you have attended a developer training, be sure you've completed and reviewed all of the exercises presented during class, even the bonus exercises. If you haven't attended training, spend some time developing applications and customizations. It would also be helpful to review Liferay’s source code to ensure you're familiar with Liferay's best practices.
Register.
Show up to the testing center with the required identification and take the 90-minute exam.