.Net Interview Questions

.Net Interview Questions: A Comprehensive Guide for Aspiring Developers

In the rapidly evolving world of software development, .Net has established itself as one of the leading frameworks for building robust applications. Developed by Microsoft, .Net provides a versatile environment for developing web, desktop, and mobile applications. As businesses continue to embrace digital transformation, the demand for skilled .Net developers has surged, making it a competitive field. For many aspiring developers, preparing for a .Net interview can be a daunting task. This article aims to equip job seekers with a comprehensive list of commonly asked .Net interview questions, along with insightful answers to help them navigate the interview process successfully. Whether you're a seasoned developer looking to refresh your knowledge or a newcomer eager to break into the industry, understanding these questions can play a critical role in showcasing your expertise and confidence during interviews.

What is .Net Framework?

.Net Framework is a software development platform developed by Microsoft that provides a controlled environment for developing and running applications. It consists of a large class library known as the Framework Class Library (FCL) and provides language interoperability across several programming languages. This means that code written in different languages can interact with each other seamlessly.

The .Net Framework supports various programming languages including C#, VB.NET, and F#. It provides essential services such as memory management, exception handling, and security, which simplifies the development process for developers. Moreover, .Net Framework has several versions, each offering new features and enhancements to improve performance and usability.

What are the differences between .Net Framework and .Net Core?

The .Net Framework is a Windows-only platform that has been around since the early 2000s, while .Net Core is a cross-platform framework that allows developers to build applications that can run on Windows, macOS, and Linux. This cross-platform capability opens up new opportunities for developers and organizations as it allows for greater flexibility in deploying applications across different environments.

.Net Core is designed for modern app development, making it more lightweight, modular, and performance-optimized compared to the traditional .Net Framework. Moreover, while .Net Framework provides a comprehensive library, .Net Core allows developers to include only the packages they need, resulting in smaller application sizes and improved performance.

What is the Common Language Runtime (CLR)?

The Common Language Runtime (CLR) is the execution engine for .Net applications. It provides a runtime environment that manages the execution of .Net programs, ensuring that they run efficiently and securely. CLR is responsible for crucial tasks such as memory management, type safety, exception handling, and garbage collection.

One of the key features of CLR is its ability to provide language interoperability. This allows developers to build applications using various programming languages and still be able to interact with each other through the CLR. Additionally, CLR performs Just-In-Time (JIT) compilation, which translates Intermediate Language (IL) code into native machine code at runtime for better performance.

What is Entity Framework?

Entity Framework (EF) is an Object-Relational Mapping (ORM) framework for .Net applications that simplifies database interactions. By using EF, developers can work with databases using .Net objects, which allows for more intuitive coding and eliminates the need for extensive SQL queries. EF takes care of tasks such as tracking changes, managing relationships, and executing database commands.

There are different approaches to using Entity Framework, including Database First, Code First, and Model First. The Code First approach allows developers to define the database structure using C# classes, enabling a more flexible and code-centric development process. EF also supports LINQ queries, making database interactions more readable and maintainable.

What are delegates in .Net?

Delegates are type-safe function pointers in .Net that enable methods to be passed as parameters. They can encapsulate both static and instance methods, providing flexibility in defining callback methods and event handling. Delegates are particularly useful in designing extensible and modular applications where methods can be invoked dynamically.

In addition to traditional delegates, .Net also supports multicast delegates, which allow multiple methods to be called in a single delegate invocation. This feature is widely used in event handling scenarios, where multiple event handlers need to be triggered in response to a single event.

.Net Interview Questions Telegram Channel

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