.Net Interview Questions
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- What is .NET?
- .NET is a software framework developed by Microsoft. It provides a runtime environment for executing applications and supports multiple programming languages like C#, F#, and Visual Basic.
- What are the components of .NET?
.NET consists of the following components:
Common Language Runtime (CLR): Manages memory, security, and execution of code.
Class Library (BCL): Provides a collection of reusable classes and functions.
ASP.NET: Used for building web applications.
ADO.NET: Handles data access.
Windows Forms: Used for creating desktop applications.
- What is the Common Language Runtime (CLR)?
- CLR is the execution environment for .NET applications. It manages memory, handles exceptions, and ensures type safety.
- What is the difference between value types and reference types in .NET?
- Value types store their actual value (e.g., int, float), while reference types store references to objects (e.g., classes, interfaces).
- Explain the concept of Just-In-Time (JIT) compilation in .NET.
- JIT compiles MSIL code to native code at runtime, optimizing performance. It enforces type safety and converts non-native methods to native code when called.
- What is MVC (Model-View-Controller)?
- MVC is an architectural pattern used to build .NET applications. It separates an application into three components: Model (data), View (UI), and Controller (logic).
- What does MIME stand for?
- MIME stands for Multipurpose Internet Mail Extensions. It allows exchanging files over emails by specifying data types.
- What is Ngen.exe in .NET?
- Ngen.exe is a tool that precompiles .NET assemblies into native code, improving application startup performance.
- What is Econo-JIT compilation?
- Econo-JIT compiles only methods called at runtime, freeing memory after execution.
- What does BCL (Base Class Library) provide?
- BCL offers a foundation for .NET applications, including common functions, threading, I/O, security, and more.
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