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5 .NET Developer Interview Questions for 2022

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.NET is one of the most popular frameworks in 2022, and it will continue to be in high demand due to its numerous applications in web, mobile, and machine learning development. 

In the following article, we will examine the reasons why companies choose it, as well as the questions that should be asked to candidates who work with this technology. 

Why choose the .NET framework for your projects? 

Microsoft’s .NET is a framework designed to build a wide range of applications and is used by many Fortune 500 companies. It is very popular because it provides robust and secure solutions for large-scale applications, both for developers and customers. 

The .NET framework was created by Microsoft for its ecosystem of numerous products and services, and facilitates the development of a variety of applications such as desktop, mobile, and web applications, as well as video games, big data, IoT, and IA. 

Here are some of the benefits of using.NET for businesses and developers: 

  • Security: It has a robust infrastructure provided by Microsoft and is considered one of the safest platforms. 
  • Stability and scalability: An advantage over other platforms is the stability and ease of scaling a project that .NET provides. 
  • Microsoft application integration: It integrates easily with Microsoft’s entire product ecosystem, making it an excellent choice for businesses looking to automate a wide range of tasks. 
  • Performance: Two of its main characteristics are flexibility and speed. The .NET framework enables rapid and simple application deployment and helps with one-time setup creation to deploy applications faster. Furthermore, .NET simplifies developers’ work by offering library classes that provide resources for app development. 
  • Language Support: It supports more than 50 languages and gives a lot of freedom to developers. Some of them are C#, VB, Python, C++, and others. 

How do you kickstart a project’s success? 

It is well noticed that having the right professionals on board is critical to the success of a project, but this is not always an easy task. There is a high demand for experienced .NET developers, making it difficult to find an appropriate profile. And choosing the right questions in job interviews is critical for finding the right talent. We have over 15 years of market experience and our focus is to find the best professionals for each technology.  

To accomplish this, it is necessary to evaluate not only technical knowledge, but also soft skills such as communication, teamwork, problem-solving, and creativity. Once it is determined that a candidate is compatible with a company’s culture and values, the developer’s technical skills are tested. 

5 .NET framework developer interview questions. 

Next, we share 5 questions that are essential for an interview with a developer of the .NET framework: 

1) Explain Model, View, and Controller. 

This question allows the interviewer to learn about the programmer’s web development experience. MVC is a software architectural pattern that divides related program logic into three interconnected elements and is commonly used for developing user interfaces: 

  • Model: Is  the data that will be used by the program. Model objects store and retrieve data from the database for an application. 
  • View: Is a way of displaying objects (UI) within an application. This is the particular vertical through which end users will communicate. 
  • Controller: It is the controller which is responsible for responding to user actions.  
.NET interview questions

2) How an IL works in the .NET environment? 

Clearly explaining IL helps checking if developers understand what happens when they compile their.NET code. 

An IL is an Intermediate Language, also known as MSIL (Microsoft Intermediate Language) or CIL (Common Intermediate Language). It is a stack-based assembly language that must be translated into bytecode for a virtual machine to run. Common Language Infrastructure (CLI) specification serves as its definition. All.NET source code is first translated into IL by compilation. A Just-In-Time (JIT) compiler will then translate IL into machine code either during software installation or at runtime. 

3) What is the difference between managed and unmanaged code? 

The interviewer may ask this question to identify the ability to differentiate between managed and unmanaged code, as the type of code that a programmer uses may limit the features in an application. 

Managed code is executed by the CLR (Common Language Runtime) of the .NET framework while unmanaged or unsafe code is executed by the operating system. Programmers can create unmanaged code from a language independent of the .NET Framework. This ability can allow managed code to be separated from the execution and compile environment.  

Because managed code runs in a secure CLR engine, it increases system security. Compilers are programs that convert unmanaged code to machine code. Machine code runs directly on the operating system, which means it can perform potentially dangerous tasks on the computer, such as leaking system memory. 

4) What is role-based security in .NET? 

In an interview, this question allows to analyze the developer’s experience using role-based authentication in .NET programs. 

Depending on a user’s position within the system, developers can restrict access using roles in the system. By giving the active thread details about the current user, .NET supports role-based authorization. The user can be recognized by the operating system using their Windows account or a unique company account. 

5) Explain the difference between Stack and Heap.  

This is an important question because it allows the interviewer to determine if the programmer understands the benefits and drawbacks of using stack or heap for application development and obtaining a strategic advantage in creating scalable programs.  

There are two types of memories in .NET: Stack and Heap. Heap memory is used for dynamic memory allocation. When a program is created, heap memory space is used to store it. Stack memory is used for static memory storage and is more sequential. As a result, it is simple to quickly access this part of memory. The stack contains a reference to the codes stored in heap memory, which is used during execution. 

(Bonus): Other non-technical aspects to consider:  

As previously stated, in addition to technical aspects, an interview validates other types of skills of the developer to know more about their previous experiences and the candidate’s ability to adapt to the company: 

  • Soft skills: The ability of developers to communicate is essential for working with teams and even non-technical departments. 
  • Portfolio: This is useful for keeping track of previous projects completed by the developer and the results of those projects. 
  • Software development methodologies: determines the developer’s familiarity with different agile methodologies. 

Finding the best talent is not an easy task, but it can be a game changer in creating a competitive advantage in highly competitive markets. 

 Contact us if you are looking to hire IT professionals. We evaluate candidates using the highest standards, including technical skills, communication abilities, personality, problem-solving abilities, creativity, and in-person interactions. No one beats our selection process. 

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