Dear Readers given below .Net interview questions and answers.
Q #1) What is .Net framework?
Ans: It is a platform for building various applications on windows. It has a list of inbuilt functionalities in the form of class, library, and APIs which are used to build, deploy and run web services and different applications. It supports different languages such as C#, VB .Net, Cobol, Perl, etc.
This framework supports object-oriented programming model.
Q #2) What are the important components of .Net?
Ans: The components of .Net are Common language run-time, .Net Class library, Application domain, Common Type System, .Net framework, Profiling, etc. However, the two important components are Class library and Common Language Runtime.
CLR provides building blocks for a wide variety of applications. The class library consists of a set of classes that are used to access the common functionality. The functionality can be shared among different applications.
Q #3) What is CTS?
Ans: CTS stands for Common Type System. It has a set of rules which state how a data type should be declared, defined and used in the program. It describes the data types that are to be used in the application.
We can design our own classes and values by following the rules that are present in the CTS. The rules are made so that the data type declared using a programming language is callable by an application that is developed using a different language.
Q #4) What is CLR?
Ans: CLR stands for Common Language Runtime. It is one of the most important components of .Net framework. It provides building blocks for many applications.
An application built using C# gets compiled by its own compiler and is converted into an Intermediate language. This is then targeted to CLR. CLR does various operations like memory management, Security checks, assemblies to be loaded and thread management. It provides a secure execution environment for applications.
Q #5) What is CLS?
Ans: CLS stands for Common Language Specification. With the rules mentioned under CLS, the developers are made to use the components that are inter-language compatible. They are reusable across all the .Net Compliant languages.
Q #6) What is JIT?
Ans: JIT stands for Just In Time. JIT is a compiler that converts Intermediate Language to a Native code.
The code is converted into Native language during execution. Native code is nothing but hardware specifications that can be read by the CPU. The native code can be stored so that it is accessible for subsequent calls.
Q #7) What is MSIL?
Ans: MSIL stands for Microsoft Intermediate Language.
MSIL provides instructions for calling methods, initializing and storing values, operations such as memory handling, exception handling and so on. All .Net codes are first compiled to IL.
Q #8) What is meant by Managed and Unmanaged code?
Ans: The code that is managed by the CLR is called Managed code. This code runs inside the CLR. Hence, it is necessary to install the .Net framework in order to execute the managed code. CLR manages the memory through garbage collection and also uses the other features like CAS and CTS for efficient management of the code.
Unmanaged code is any code that does not depend on CLR for execution. It means it is developed by any other language independent of .Net framework. It uses its own runtime environment for compiling and execution.
Though it is not running inside the CLR, the unmanaged code will work properly if all the other parameters are correctly followed.
Q #9) How is a Managed code executed?
Ans: Following steps are followed while executing a Managed code:
- Choosing a language compiler depending on the language in which the code is written.
- Converting the above code into Intermediate Language by its own compiler.
- The IL is then targeted to CLR which converts the code into native code with the help of JIT.
- Execution of Native code.
Q #10) What is ASP.Net?
Ans: ASP .Net is a part of .Net technology and it comprises of CLR too. It is an open source server-side technology that enables the programmers to build powerful web services, websites and web applications.
ASP stands for Active Server Pages.