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React is a JavaScript library for building user interfaces.
React is used for creating interactive UI components.
It uses a virtual DOM for efficient rendering.
React lifecycle methods include componentDidMount, componentDidUpdate, and componentWillUnmount.
These methods allow developers to perform actions at specific points in a component's lifecycle.
Virtual DOM is a lightweight copy of the actual DOM used for efficient updates. Reconciliation is the process of updating the actual DOM based on changes in the virtual DOM.
Virtual DOM is a lightweight copy of the actual DOM kept in memory.
When changes are made to the UI, they are first reflected in the virtual DOM.
Reconciliation is the process of comparing the virtual DOM with the actual DOM and updating only the nece...
I applied via LinkedIn and was interviewed before Jul 2023. There were 2 interview rounds.
Data structrre questions only
Gave a case study to solve
Top trending discussions
I appeared for an interview in May 2024.
posted on 5 Feb 2025
Old process take aptitude test
Dispose and finalize are methods used for releasing resources in .NET.
Dispose is used to release unmanaged resources immediately.
Finalize is used to release managed resources when the garbage collector runs.
Dispose can be called manually or through the using statement.
Finalize is called automatically by the garbage collector.
Dispose is implemented by IDisposable interface.
Finalize is implemented by Object class.
OOPs concepts are the principles of Object-Oriented Programming that help in designing and implementing software solutions.
Encapsulation - binding data and functions together
Inheritance - creating new classes from existing ones
Polymorphism - ability of objects to take on multiple forms
Abstraction - hiding implementation details
Objects - instances of classes that encapsulate data and behavior
Inheritance is a mechanism in OOP where a new class is derived from an existing class.
It allows for code reusability and promotes a hierarchical structure.
It can lead to tight coupling and make the code harder to maintain.
It can also result in the creation of unnecessary classes and increase complexity.
Example: A Car class can inherit properties and methods from a Vehicle class.
Example: A Square class can inherit prope
Explicit interface is a way to implement multiple interfaces with same method names.
Explicit interface is used to avoid naming conflicts when implementing multiple interfaces.
It is implemented by prefixing the interface name to the method name.
It is useful when implementing COM interfaces in .NET.
Example: void IInterface1.Method() and void IInterface2.Method()
Interface defines only method signatures while abstract class can have method implementations.
Interfaces can be implemented by multiple classes while abstract classes can only be extended by one class.
Interfaces are used for achieving multiple inheritance in Java while abstract classes are used for single inheritance.
Interfaces cannot have constructors while abstract classes can have constructors.
An example of an inter...
Startup method in .NET Core is used to configure the application's services and middleware.
Startup method is defined in Startup.cs file.
It includes ConfigureServices and Configure methods.
ConfigureServices is used to add services to the dependency injection container.
Configure is used to configure the HTTP request pipeline.
Example: public void ConfigureServices(IServiceCollection services) { services.AddMvc(); }
Example...
HTTP verbs are used to indicate the type of action being performed on a resource.
HTTP verbs include GET, POST, PUT, DELETE, PATCH, HEAD, OPTIONS
GET is used to retrieve data from a server
POST is used to submit data to a server
PUT is used to update an existing resource on a server
DELETE is used to delete a resource from a server
PATCH is used to partially update a resource on a server
HEAD is used to retrieve only the head...
Project architecture refers to the overall design and structure of a software project.
It includes the organization of components and modules
Defines the relationships between them
Specifies the technologies and tools used
Determines the overall performance and scalability
Examples include MVC, microservices, and client-server architecture
Clock questions and nim game
I applied via Naukri.com and was interviewed in Nov 2023. There were 4 interview rounds.
I applied via Walk-in and was interviewed in May 2022. There was 1 interview round.
OOPs concepts are the principles of Object-Oriented Programming. Class is a blueprint for creating objects. Interface is a contract.
OOPs concepts include encapsulation, inheritance, polymorphism, and abstraction.
Class is a template for creating objects that defines its properties and methods.
Interface is a contract that defines a set of methods that a class must implement.
Inheritance allows a class to inherit propertie...
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