True/False - Exam candidate will select if the statement presented is true or false.
Multiple Choice Single Answer - Exam candidate will select the one response that most correctly completes the statement presented.
Multiple Choice Multiple Answer - Exam candidate will select all of the responses that correctly complete the statement presented.
Example Test Questions
All questions are based on Liferay best practices when developing for Liferay DXP.
Unless other otherwise indicated in the question, assume a new Liferay installation with no additional plugins installed and no modifications to portal properties.
The Liferay Platform only supports configuration through the portal-ext.properties file. True False Answer: False
Using Declarative Services, the following properties are defined in the property attribute of the @Component: (Please select all correct answers.) A. If the portlet is instanceable B. If the portlet appears in the "Sample" Display Category C. If the portlet can be displayed in Liferay Portal 6.2 D. If the portlet has a Language.properties file Answer: A, B and D
The standard methods of the portlet lifecycle in the JSR-286 portlet specification include: (Please select all correct answers.) A. init B. service C. render D. destroy E. notify Answer: A, C and D
A fragment module works in the following phase of the Module Lifecycle: A. Resolved B. Active C. Installed D. Starting Answer: A
The recommended location to declare an entity to be used by Liferay Service Builder is: A. EntityImpl.java B. entity.xml C. portal_entity.ftl D. service.xml Answer: D
Topics: Each topic will be a percentage of the test below.
Liferay Digital Experience Platform: Basic Concepts - 25%
Creating personalized digital experiences across web, mobile and connected devices is the goal of Liferay DXP's framework. You’ll need to know how to add new features using Liferay modules.
Understand basic development concepts:
Liferay Modules (Bundles)
Liferay Digital Experience Platform: Portlet Modules - 20%
In Liferay, you can deploy new features using Liferay modules. With Portlet Modules, you can create new functionalities.
You can develop the following to extend DXP out-of-the-box:
Liferay Digital Experience Platform: Liferay Services - 25%
Liferay allows you to use Local or Remote services, for example:
Web Content Articles
Message Board Posts
Liferay Digital Experience Platform: Liferay Frameworks - 25%
Liferay Frameworks customize the user experience. Be familiar with the following frameworks:
Search and Indexing
Liferay Digital Experience Platform: Upgrade Process - 5%
Upgrading from Liferay 6.X involves moving from plugins to Liferay modules.
Know how to make upgrades from Liferay 6.X to Liferay DXP
Note: This examination overview includes weighting, test objectives, and example content. Example topics and concepts are included to clarify test objectives; they should not be construed as a comprehensive listing of all of the content of this examination.
This exam is based off of the Liferay Training courses Application Developer and Platform Developer as well as the Liferay DXP Developer Guide, containing official documentation and best practices.
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 Application Developer and Platform Developer courses. 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. 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.