Magento 2 Developer Exam Study Guide

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Questions and Answers

What percentage of the Magento 2 Certified Developer exam is focused on customizing the checkout process?

10%

13% (correct)

12%

Which of the following is NOT a topic covered in the Magento 2 Certified Developer exam?

Customer Management

Customizing the Catalog

Frontend Optimization (correct)

Sales Operations

How does Magento utilize the Entity-Attribute-Value (EAV) model?

For managing customer accounts.

For handling product attributes. (correct)

For database changes mainly.

For customizing the catalog structure.

What is a significant aspect of Magento's module-based architecture?

Modules encapsulate specific functionalities. Signup and view all the answers

What is the primary focus of the 18% of the Magento 2 Certified Developer exam?

Magento Architecture & Customization Techniques Signup and view all the answers

What is the purpose of configuration XML files in Magento?

To manage configuration settings for features. Signup and view all the answers

What percentage of the exam focuses on working with databases in Magento?

7% Signup and view all the answers

Which statement best describes dependency injection in Magento?

It is a method to simplify object creation and configuration. Signup and view all the answers

What is necessary to create a custom URL structure in Magento?

Defining rewrite rules in the URL rewrite table Signup and view all the answers

When is it necessary to create a new router in Magento?

For implementing custom URL patterns and logic Signup and view all the answers

How does Magento treat layout XML files with the same names in different modules?

They are merged in a specific order based on module definitions Signup and view all the answers

What role do blocks play in Magento's request flow?

They are responsible for generating and rendering HTML content Signup and view all the answers

Which of the following is a method to handle custom 404 pages in Magento?

Configuring a custom router with a 404 controller Signup and view all the answers

What is a key aspect of the layout compilation process in Magento?

It merges all layout XML files from active modules Signup and view all the answers

How can you customize the default template hierarchy in Magento?

By defining a new theme and setting its parent theme Signup and view all the answers

Which of the following describes action controllers in Magento?

They manage the logic associated with rendering views Signup and view all the answers

What distinguishes Adminhtml from the frontend in Magento?

Adminhtml requires additional authentication tools while the frontend does not. Signup and view all the answers

Which of the following is NOT a component of form structure in Magento?

Form validators Signup and view all the answers

How do you programmatically add a new system configuration option in Magento?

Through the use of configuration XML files. Signup and view all the answers

What is the primary purpose of ACL in relation to menu items in Magento?

To manage user permissions and access levels. Signup and view all the answers

What is true about the product types available in Magento?

Each product type has distinct functionality not applicable to others. Signup and view all the answers

Which aspect is NOT considered when generating a price for a product in Magento?

Checkout processing fee Signup and view all the answers

How can categories be managed in Magento?

Through a web-based user interface in the Admin panel. Signup and view all the answers

What process is involved in displaying a grid or form in Magento?

Defining grid templates and configuring data sources. Signup and view all the answers

What is a common task when troubleshooting payment methods?

Verifying transaction logs for errors Signup and view all the answers

Which of the following payment methods is commonly used in e-commerce?

All of the above Signup and view all the answers

What is a key difference in payment flows between credit card and PayPal transactions?

Credit card transactions provide immediate authorization Signup and view all the answers

What is one way to modify the 'My Account' section for enhanced customer experience?

Add a new menu item for promotions Signup and view all the answers

How can new states and statuses for an order be effectively added in Magento?

Customizing the order processing workflow Signup and view all the answers

What is an essential aspect of customizing invoice management in Magento?

Changing the default invoice template Signup and view all the answers

How can you extend customer entity functionality in Magento effectively?

Employing the extension attributes mechanism Signup and view all the answers

What functionality do customer groups affect in an e-commerce business?

Discount and pricing strategies Signup and view all the answers

What is the best way to maintain functionality while resolving the issue with the quote item collection?

Change the argument type to \Magento\Quote\Model\ResourceModel\Quote\Item\CollectionFactory and instantiate the collection using $collectionFactory->create(); Signup and view all the answers

When implementing the interface \Magento\Framework\App\Config\DataInterface, what version constraint for magento/framework should you add to your module’s composer.json file?

minor Signup and view all the answers

Injecting which component allows you to customize the query while ensuring low-level queries are managed correctly?

Magento\Framework\DB\Select for direct database queries Signup and view all the answers

What potential issue may arise when using ObjectManager directly for instantiation?

It creates tight coupling and defeats the purpose of dependency injection. Signup and view all the answers

What aspect of Magento's coding standards is highlighted in the issue regarding quote item collections?

Importance of dependency injection and service contracts. Signup and view all the answers

What is a recommended approach when dealing with conflicts in quote item collections in Magento modules?

Implement event observers to resolve conflicts. Signup and view all the answers

Which approach would NOT maintain best practices when creating a collection in Magento?

Directly calling constructor methods of the collection class. Signup and view all the answers

What is the purpose of the \Magento\Quote\Api\CartItemRepositoryInterface?

To handle cart item-specific database operations without relying on direct SQL. Signup and view all the answers

In what type of setup script should the EAV attribute pim_entity_id be created when integrating a merchant’s product information management system with Magento?

Setup/InstallSchema.php Signup and view all the answers

Which two files would you search to find customization declarations for \Magento\Catalog\Api\ProductRepositoryInterface::save()?

*/di.xml Signup and view all the answers

What is the best approach to implement common functionality in multiple event observers while ensuring maintainability?

Create an abstract class AbstractObserver and extend it in the observer classes. Signup and view all the answers

When modifying the select object of a quote item collection, what is the correct way to apply custom query optimizations?

Modify the select object within the fetchData method of your custom class. Signup and view all the answers

Which of the following is NOT a valid type of setup script in Magento?

ReinstallData.php Signup and view all the answers

What is the purpose of using dependency injection in event observers?

To allow observers to share functionality without duplication. Signup and view all the answers

Which XML file is primarily used to declare plugin definitions for method customization?

di.xml Signup and view all the answers

What should you avoid when implementing common functions in event observers?

Creating multiple abstract classes for each observer. Signup and view all the answers

Study Notes

Magento 2 Certified Professional Developer Exam Study Guide

Exam Focus: Validating skills and knowledge for customizing Magento 2
Target Audience: Experienced Magento 2 developers (1.5 years' experience recommended)
Exam Format: Primarily scenario-based multiple-choice questions
Exam Version: Magento Open Source version 2.2.x
Key Topics (and Percentage):
- Magento Architecture & Customization Techniques (18%)
- Request Flow Processing (12%)
- Customizing the Magento UI (10%)
- Working with Databases in Magento (7%)
- Using the Entity-Attribute-Value (EAV) Model (8%)
- Developing with Adminhtml (10%)
- Customizing the Catalog (12%)
- Customizing the Checkout Process (13%)
- Sales Operations (5%)
- Customer Management (5%)

Topics and Objectives

Magento Architecture & Customization Techniques:
- Module-based architecture and its limitations
- Directory structure (location of different file types)
- Configuration XML and scope
- Dependency injection approach and architecture
- Using plugins (lifecycle, strengths/weaknesses)
- Configuration of event observers and scheduled jobs (frontend/backend)
Request Flow Processing:
- Application initialization and Magento modes
- URL routing and customization
- Layout initialization (debugging, fallback, admin/frontend)
- Request processing, including URL handling and 404 pages
Customizing the Magento UI:
- Themes and template structure, theme hierarchy
- Layout XML, Blocks
- JavaScript modules, using JavaScript in Magento
Working with Databases in Magento:
- Data-related classes (repositories, Data/API classes)
- Entity load/save process
- Database abstraction layer (exceptions, Zend)
- Install/upgrade scripts
Using the Entity-Attribute-Value (EAV) Model:
- EAV hierarchy structure (attributes, sets, groups)
- Load/save process and differences from flat tables
- Attribute management
Developing with Adminhtml:
- Adminhtml vs. frontend architecture
- Form/grid widget structure and customizations
- ACL (Access Control List) for menu items and permissions
Customizing the Catalog:
- Product types (simple, configurable, bundled)
- Price functionality and customization
- Category structure and customization
- Catalog price rules and impact on performance
Customizing the Checkout Process:
- Quote, quote items, address, shopping cart rules
- Custom totals models
- Shopping cart customization (configurable/bundle)
- Payment method customization
Sales Operations:
- Order processing, customization
- Refund functionality and types
Customer Management:
- My Account customization
- Customer attributes and functionality
- Customer groups, address customization
- Magento VAT functionality

Magento 2 Certified Professional Developer Exam Example Questions

Question 1: Which layer in the Magento request processing flow is suited for custom URL processing?
Question 2: In which type of setup script is an EAV attribute created?
Question 3: Which files are used for customization declarations regarding a specific method?
Question 4: How is common functionality implemented in multiple event observers?
Question 5: How to optimize queries for quote items in Magento?
Question 6: What version constraint is needed for the framework in the composer.json file?

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Description

Prepare for the Magento 2 Certified Professional Developer Exam with this comprehensive study guide. Covering critical topics such as Magento architecture, customization techniques, and database management, this quiz will help experienced developers validate their skills in Magento 2. Ideal for those with at least 1.5 years of experience.