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.
Liferay DXP 7.3 has an embedded OSGi container.
False Answer: True
Which of the following files does Service Builder use to generate code?
D. serviceImpl.java Answer: B
Which of the following statements about MVC Commands are true?
(Please select all correct answers.)
A. MVC Commands are Liferay’s way of implementing the Render, Action, and Resource Serving phases of a portlet.
B. MVC Commands are implemented as components.
C. MVC Commands are defined in the Java Portlet Specifications JSR 168 and are the default way of supporting various portlet lifecycle methods.
D. MVC Commands keep the portlet class lean, making the phases of the portlet more manageable.
E. MVC Commands must be implemented through the Gogo Shell. Answer: A, B and D
Each topic will be a percentage of the test below.
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.
多个商店 — 一个账号可以管理多个商店。
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.
产品类型 — 销售实体产品、订购类产品、服务、产品Bundle和数字化商品。
OSGi Components and Services
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.
Working With Liferay Workspace
Liferay Frameworks expand the capabilities of your implementations.
页面生成器 — 使用拖放和自带的应用程序如产品详细信息显示、购物车、搜索栏等创建页面。
Felix Web Console
Extending and customizing Liferay Portal for your own needs.
结账页面 — 显示订单信息如日期、付款方式、合计和客户账户信息。
Liferay MVC Portlet Module
Upgrading from Liferay 6.X involves moving from plugins to Liferay modules.
账户组 — 为每个分组创建用户分组和目标价目表、折扣或促销。
Liferay 7.2: Angular | 04%
Liferay is compliant with many industry-proven standards.
JAX-WS and JAX-RS
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.
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
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:
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 the additional source material. learn.liferay.com 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.