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%
  • 5%

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?

<p>Modules encapsulate specific functionalities. (D)</p> Signup and view all the answers

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

<p>Magento Architecture &amp; Customization Techniques (D)</p> Signup and view all the answers

What is the purpose of configuration XML files in Magento?

<p>To manage configuration settings for features. (B)</p> Signup and view all the answers

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

<p>7% (B)</p> Signup and view all the answers

Which statement best describes dependency injection in Magento?

<p>It is a method to simplify object creation and configuration. (C)</p> Signup and view all the answers

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

<p>Defining rewrite rules in the URL rewrite table (A)</p> Signup and view all the answers

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

<p>For implementing custom URL patterns and logic (D)</p> Signup and view all the answers

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

<p>They are merged in a specific order based on module definitions (C)</p> Signup and view all the answers

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

<p>They are responsible for generating and rendering HTML content (B)</p> Signup and view all the answers

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

<p>Configuring a custom router with a 404 controller (D)</p> Signup and view all the answers

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

<p>It merges all layout XML files from active modules (D)</p> Signup and view all the answers

How can you customize the default template hierarchy in Magento?

<p>By defining a new theme and setting its parent theme (D)</p> Signup and view all the answers

Which of the following describes action controllers in Magento?

<p>They manage the logic associated with rendering views (D)</p> Signup and view all the answers

What distinguishes Adminhtml from the frontend in Magento?

<p>Adminhtml requires additional authentication tools while the frontend does not. (C)</p> Signup and view all the answers

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

<p>Form validators (D)</p> Signup and view all the answers

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

<p>Through the use of configuration XML files. (A)</p> Signup and view all the answers

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

<p>To manage user permissions and access levels. (D)</p> Signup and view all the answers

What is true about the product types available in Magento?

<p>Each product type has distinct functionality not applicable to others. (C)</p> Signup and view all the answers

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

<p>Checkout processing fee (D)</p> Signup and view all the answers

How can categories be managed in Magento?

<p>Through a web-based user interface in the Admin panel. (D)</p> Signup and view all the answers

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

<p>Defining grid templates and configuring data sources. (D)</p> Signup and view all the answers

What is a common task when troubleshooting payment methods?

<p>Verifying transaction logs for errors (B)</p> Signup and view all the answers

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

<p>All of the above (D)</p> Signup and view all the answers

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

<p>Credit card transactions provide immediate authorization (D)</p> Signup and view all the answers

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

<p>Add a new menu item for promotions (A)</p> Signup and view all the answers

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

<p>Customizing the order processing workflow (D)</p> Signup and view all the answers

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

<p>Changing the default invoice template (A)</p> Signup and view all the answers

How can you extend customer entity functionality in Magento effectively?

<p>Employing the extension attributes mechanism (C)</p> Signup and view all the answers

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

<p>Discount and pricing strategies (C)</p> Signup and view all the answers

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

<p>Change the argument type to \Magento\Quote\Model\ResourceModel\Quote\Item\CollectionFactory and instantiate the collection using $collectionFactory-&gt;create(); (D)</p> 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?

<p>minor (D)</p> Signup and view all the answers

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

<p>Magento\Framework\DB\Select for direct database queries (D)</p> Signup and view all the answers

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

<p>It creates tight coupling and defeats the purpose of dependency injection. (D)</p> Signup and view all the answers

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

<p>Importance of dependency injection and service contracts. (D)</p> Signup and view all the answers

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

<p>Implement event observers to resolve conflicts. (A)</p> Signup and view all the answers

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

<p>Directly calling constructor methods of the collection class. (D)</p> Signup and view all the answers

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

<p>To handle cart item-specific database operations without relying on direct SQL. (A)</p> 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?

<p>Setup/InstallSchema.php (D)</p> Signup and view all the answers

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

<p>*/di.xml (A), */plugins.xml (B)</p> Signup and view all the answers

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

<p>Create an abstract class AbstractObserver and extend it in the observer classes. (D)</p> 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?

<p>Modify the select object within the fetchData method of your custom class. (A)</p> Signup and view all the answers

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

<p>ReinstallData.php (A)</p> Signup and view all the answers

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

<p>To allow observers to share functionality without duplication. (D)</p> Signup and view all the answers

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

<p>di.xml (B)</p> Signup and view all the answers

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

<p>Creating multiple abstract classes for each observer. (A)</p> Signup and view all the answers

Flashcards

Magento 2 Certified Developer

A certification earned by passing an exam validating skills to customize Magento 2.

Magento 2 UI Modifications

Customizing the user interface of Magento 2.

Magento 2 Database Changes

Modifying the Magento 2 database schema.

Admin Modifications (Magento 2)

Customizing the Magento 2 admin panel.

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Order Management Integrations (Magento 2)

Connecting to external systems for managing orders.

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Checkout Process Customization (Magento 2)

Modifying the Magento 2 checkout process.

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Catalog Structure (Magento 2)

Modifying the organization and display of products.

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Magento Architecture

The structure and design of the Magento system.

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Module-Based Architecture

Magento's system of independently functional components.

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Directory Structure (Magento)

The file organization within Magento.

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Configuration XML

XML configuration files.

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Dependency Injection (Magento)

Approach to object creation in Magento.

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EAV Model

Entity-Attribute-Value data model in Magento.

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Adminhtml vs. Frontend

Adminhtml is the Magento admin area used for managing the site, while Frontend is the customer-facing website.

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Form Widget

A component in Magento Adminhtml for creating forms to input data.

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Grid Widget

A component displaying data in tables (grids).

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System Configuration XML

XML file that defines system settings.

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Scope in Config

Limits configuration options to specific parts of a site or store.

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ACL Permissions

Access Control Lists that restrict who can do what in the Admin.

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Front Controller in Magento

Magento's central component that handles incoming requests, maps them to specific controllers, and executes them.

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Product Types

Different ways products can be categorized (simple, configurable, etc).

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Magento URL Processing

Magento's process for converting user-friendly URLs into internal, module-specific handles to locate associated controller.

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Price Calculation

Determining the final price of a product.

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URL Rewrites

Magento's mechanism to create user-friendly URLs and map them to specific controllers and actions.

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Categories (Magento)

Organizing products into groups.

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Action Controllers

Components in Magento that respond to actions requested through a URL (e.g., product list, checkout).

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Custom Request Routing

Adjusting how Magento handles the URL requests and matches them with components and actions.

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Layout Compilation

Magento's process of assembling the layout of web pages from various components.

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Layout Fallback

Magento's process for using layout definitions from one module when another doesn't provide a suitable one.

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Block Templates

Components that define the structure, content and display of parts of a webpage within Magento applications.

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Theme Customization

The method of altering the appearance of the storefront.

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Custom 404 Pages

Pages displayed when a requested resource is not found in Magento.

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Magento Quote Item Collection Issue

A scenario where a custom module's query for quote items doesn't return expected results due to another module loading the collection before the custom one.

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Resolve Quote Item Collection Issue

Using \Magento\Quote\Model\ResourceModel\Quote\Item\CollectionFactory for a custom module and utilizing $collectionFactory->create() method that prevents conflicts.

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Alternative Quote Collection Creation

An alternative method for creating a quote item collection using ObjectManager for instantiation to prevent module ordering issues.

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Independent Query for Quote Items

Handling the query independently of the quote item collection by injecting \Magento\Framework\DB\Select to access the database directly.

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Quote Item API

Using the Magento API interface \Magento\Quote\Api\CartItemRepositoryInterface to avoid low level queries and ensure compatibility with Magento framework.

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Magento Configuration Value

Retrieving or setting a configuration value within Magento using a specific path.

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Composer Version Constraint

Specifying the version constraint for the 'magento/framework' dependency in composer.json to ensure compatibility with the required Magento version.

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Payment Method Troubleshooting

Identifying and resolving issues with different payment methods used on an e-commerce platform, like Magento.

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Payment Methods

Different ways customers can pay for goods or services online, such as credit cards, debit cards, PayPal, and more.

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Payment Flows

The steps involved in processing customer payments, from selecting a method to final confirmation.

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Sales Operations Customization

Adapting the sales processes within a system to meet specific business needs.

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Order Processing Modification

Changing how orders are handled, including steps, status updates, and workflows.

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Magento Order States and Statuses

The different stages an order goes through during processing, from pending to complete.

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Invoice Customization

Personalizing the look, functionality, and workflow of invoice generation, capturing, and management in Magento.

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Refund Functionality (Magento)

The features and options for handling refunds on transactions within the Magento e-commerce platform

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My Account Customization

Personalizing the "My Account" section to improve the customer experience in Magento.

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Customer Attributes

Specific details about customers, like addresses, preferences, and other crucial info.

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Customer Entity Extensions

Expanding customer data beyond standard attributes.

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Magento Request Processing

The different stages in how Magento handles an incoming request.

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Magento EAV Attribute Creation

Adding a custom attribute to a product in Magento using the Entity-Attribute-Value (EAV) model.

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Setup/InstallSchema.php

Magento setup script responsible for creating the database tables for an attribute.

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Setup/UpgradeSchema.php

Magento setup script used for schema upgrades, updating attribute tables in data migration.

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Setup/InstallEntity.php

Magento setup script used to add or remove entities.

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Setup/UpgradeData.php

Magento setup script used for data upgrades.

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ProductRepositoryInterface::save() customization

Modifying the save() method of the ProductRepositoryInterface. Used when handling product updates or creations.

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di.xml

Magento configuration file used for dependency injection.

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config.xml

Magento configuration file for legacy configuration.

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events.xml

Configuration file for Magento events, including events triggered during product saves.

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plugins.xml

Magento configuration file to inject plugins around specific methods.

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Common Functionality in Event Observers

Reusable code for event observers, improving maintainability and testability.

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Trait

Code reuse mechanism in PHP, to implement common functionality across multiple classes.

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Abstract Class

Partial and/or incomplete implementation of functionality, meant for classes to inherit from it.

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Public static methods

Methods that are accessible publicly and share data between classes in a module.

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Constructor Injection

Passing dependencies to an object via its constructor.

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Optimized Custom Query for Quote Items

Improving the efficiency of queries related to quote items in Magento.

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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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Magento 2 Certified Professional Developer Exam Study Guide PDF

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.

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