For an individual preparing for a .NET Core interview, it is essential to have the knowledge of foundational ideas and be well–versed with the more intricate applications and concepts of the framework. In recognition of ease of use, here is a compilation of some frequently asked .NET Core interview questions, with comprehensive responses that will assist you to ace the interviewing process!
1. Define what .NET Core is?
Answer: .NET core is a cross-platform, open-source framework designed by Microsoft. The program was developed to be utilized in the design and creation of cutting-edge, high-performing Linux, macOS, and Windows-based applications. The previously used classic.NET foundation has been redesigned to offer a flexible foundation that can be customized to meet unique requirements of your applications.
2. What are the primary advantages of utilizing.NET Core?
Answer: (a) The Compatibility to Cross – platform: .NET Core facilitates developers to create along with functioning of applications on Linux, macOS, and Microsoft Windows.
(b) Effectiveness: In comparison with the classic .NET Framework, .NET Core functions significantly because of its substantial number of optimizations.
(c) Open Source: Because of it being a open source .NET Core promotes contributions made by and participation within a wider community.
(d) Flexibility: Your actions may reduce the overall dimensions of the program by simply including the.NET core elements that are essential.
(e) Container Support: Docker containers are intended to enhance the installation and scalability of .NET Core apps.
3. Explain the difference between .NET Core and traditional .NET Framework version.
Answer: .NET Core: It is a free software and runs on cast-platforms for modern cloud-based applications. It is modular equipping you with only the mandatory components as desired. It is equipped with also optimization feature in performance.
.NET Framework: It’s a traditional distinctive Windows-only foundation, not an open source one. It ages long enough to be useful in many areas of use, i.e. those areas where Windows desktops and servers operate.
4. What is ASP.NET Core?
Answer: ASP.NET Core is a multipurpose, high-speed and cloud-based framework for building different kinds of applications, including the ones accessible from the internet. It’s the newer version of ASP.NET you’ll see closely linked with .NET Core. It supports multi-platform development and has gained popularity because of its increased performance speed compared to ASP.NET.
5. In .NET Core you can use Dependency Injection to replace an any instance with another specific class.
Answer: The dependency injection (DI) is a design pattern used to implement several dynamic aspects by loosening the dependency coupling between components. Dependency Injection (DI) in .NET Core is a part of the framework and helps developers as they implement this software. It is basically a way to tackle the dependencies of class not from the class itself, but by injecting them from outside the class. It is a way that allows you to assess your code’s integrity, ease of fixing bugs, and ability to adapt to future changes.
6. Entity Framework Core is a popular open-source object-relational mapping (ORM) tool that enables developers to efficiently manage data in their applications.
Answer: Entity Framework Core (EF Core), which is based on the principles of Object-Relational Mapping (ORM), is a tool for .NET framework. It makes easier to manipulate databases by giving possibility to work with .NET objects rather than dealing with the database tables and SQL queries directly. EF Core allows you to write your .NET code in a manner that is understood by SQL and automatically translated to SQL queries, making database operations more comfortable and efficient.
7. Middleware come into picture in ASP.NET Core, what exactly are they?
Answer: In ASP.NET Core, middleware refers to software components that are assembled intermediately to handle requests and responses. Each middleware component does operate with a function such as routing, authentication, logging, etc. You can do change any pipeline by moving middleware components – just by customizing your request handling process.
8. Show the Kestrel as main server in ASP.NET Core.
Answer: Kestrel is the most common, cross-platform web server for ASP.NET Core, which operates on Linux, macOS and Windows systems. It is a “lightweight” as well as fast HTTP web server that is intended to be used with other web servers like IIS or Nginx. In a nutshell, Kestrel focuses on ASP.NET Core applications and is implemented to cope with the maximum number of parallel connections at a decent speed.
9. What do I need to understand about .NET Core SDK and .NET Core Runtime?
Answer: .NET Core SDK: It includes all tools and libraries needed to build and develop .NET Core applications, including compilers, library source codes, dot net CLI (a command-line interface).
.NET Core Runtime: It is what is installing that allows .NET Core apps to run. It consists of the .NET Core language assemblies and Common Language Runtime (CLR) – the one, which executes .NET code.
10. What is the .NET Core‘s strategy with respect to memory management?
Answer: .NET Core relies on good Ol’ garbage collector to handle the management of heap memory. Every garbage collector from time to time scans the memory for objects that aren’t needed anymore and deal locate memory they previously occupied. With pileup of junks in corners of memory space, developers can now write code triggering more of their precious brain cells with less focus on memory leaks or manual memory management.
The above questions are illustrative of the ones that might arise in .NET Core interview. Not just memorize the answers, you are requested to also understand the concepts behind them. You have all the luck. Please make sure to refer this article during the interview preparation.
To make it more comprehensive, you may visit the official Microsoft documentation for more information and tutorials. I hope it will be advantageous for you. Happy coding!
