Here we have prepared top 10 Magento 2 Interview Question and answer for those who are looking for the job as a Magento Developer.
In the Magento 2 Interview Question interviewer always used to ask about what is Magento.
List of Top 10 Magento 2 Interview Question and Answer
Magento is an open-source e-commerce platform written in PHP. It uses multiple other PHP frameworks such as Laminas and Symfony. Magento source code is distributed under Open Software License (OSL) v3. 0. Magento was acquired by Adobe Inc in May 2018 for $1.68 Billion USD.
What is object manager in Magento 2?
The ObjectManager is class which handles `automatic` Dependency Injection in Magento 2. When any class is constructed, ObjectManager automatically injects class's dependencies which is provided directly (Constructor Injection) and defined in all di. xml files of modules.
Magento 2 Interview Question: What is Magento 2 Proxy Class?
Proxy is another new feature in Magento. It is a set of classes, automatically generated by Magento on compile-time. Proxies are used to lazy load a class they extend. The resulting code contains a Proxy class that extends a class we need this Proxy for.
Most Common Magento 2 Interview Question is:
What is Factories Classes in Magento?
Factories are service classes that instantiate non-injectable classes, that is, models that represent a database entity. They create a layer of abstraction between the ObjectManager and business code.
What is Factory Method in Magento 2?
The Magento 2 Factory Object will be used to instantiate an object. The Factory class name is the name of Model class and append with the Factory word. It also dependent with ObjectManager Class. This design pattern used to create objects for all the classes instead of using new keyword.
What is Service Contract in Magento 2 Interview Question
A service contract is a set of PHP interfaces that are defined for a module. If developers define data and service interfaces according to a set of design patterns, the result is a well-defined, durable API that other modules and third-party extensions can implement through Magento models and resource models.
What is Design Pattern in Magento 2?
The Magento 2 Dependency Injection(DI) is a system of object management based on Object Manager or Factory to create Objects with available configuration. DI is a design pattern allowing class A to declare dependencies so that class B can use those dependencies.
What is Dependency Injection in Magento 2 Interview Question
Magento 2 uses Dependency Injection to replace functionality provided by the Mage class in Magento 1 Dependency Injection is a design pattern that allows an object A to declare its dependencies to an external object B that supplies those dependencies.
What is EAV model in Magento 2?
In Magento, EAV stands for Entity, Attribute and Value.
Entity: The entity represents Magento data items such as products, categories, customers and orders. Each entity (product, category, etc.) will have its own entity record in the database.
Attribute: The attributes represent data items that belong to an entity. For example, the product entity has attributes such as name, price, status and many more.
Value: The value is the simplest to understand as it is simply a value linked to an attribute. For better understanding, let’s consider the product entity. Each product entity will have a series of attributes, one of them is the name attribute. Each product will then have a value for the name attribute (and all other attributes).
What are Magento 2 plugins?
A plugin, or interceptor, is a class that modifies the behaviour of public class functions by intercepting a function call and running code before, after, or around that function call. This allows you to substitute or extend the behaviour of original, public methods for any class or interface.
What is event and observer in Magento 2?
Events Events are dispatched by modules when certain actions are triggered. In addition to its own events, Magento allows you to create your own events that can be dispatched in your code. When an event is dispatched, it can pass data to any observers configured to watch that event.
Observers: Observers are a certain type of Magento class that can influence general behaviour, performance, or change business logic. Observers are executed whenever the event they are configured to watch is dispatched by the event manager.
What is repository in magento2?
Repositories give service requestors the ability to perform create, read, update, and delete (CRUD) operations on entities or a list of entities. A repository is an example of a service contract, and its implementation is part of the domain layer.