Hi Friends,

Here is lot of microsoft Dot Net 2.0 Interview questions and answers availble....

Learn with my posts and share your knowledge here.....

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S.VinothkumaR
Behind me is infinite power,
Before me is Endless Possibility,
Around me is Boundless Opportunity,
Why should I fear!

What is .NET?

According to Microsoft, .NET is a "revolutionary new platform, built on open Internet protocols and standards, with tools and services that meld computing and communications in new ways".

A more practical definition would be that .NET is a new environment for developing and running software applications, featuring ease of development of web-based services, rich standard run-time services available to components written in a variety of programming languages, and inter-language and inter-machine interoperability.

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S.VinothkumaR
Behind me is infinite power,
Before me is Endless Possibility,
Around me is Boundless Opportunity,
Why should I fear!

What platforms does the .NET Framework run on?

The .Net Framework runs on Windows XP, Windows Server 2003, Windows 2000, NT Server 4.0, Windows 98, or Windows ME, although ASP.NET runs only on the first 3.

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S.VinothkumaR
Behind me is infinite power,
Before me is Endless Possibility,
Around me is Boundless Opportunity,
Why should I fear!

What languages does the .NET Framework support?

As per the specifications of microsoft we can use 44 languages. Commonly used languages are,

1. Visual Basic.NET

2. Visual C#

3. Visual C++

__________________
S.VinothkumaR
Behind me is infinite power,
Before me is Endless Possibility,
Around me is Boundless Opportunity,
Why should I fear!

What is the difference between asp.net & vb.net and tell about its architecture?

ASP.NET is a web-development platform.

VB.NET is a language.

Web-development with ASP.NET platform is HTML, CSS, Client side scripts, ASP.NET tags and code behind with VB.NET or C#.NET or J#/C++ combination.

__________________
S.VinothkumaR
Behind me is infinite power,
Before me is Endless Possibility,
Around me is Boundless Opportunity,
Why should I fear!

What is marshaling?

Marshaling performs the necessary conversions in data formats between managed and unmanaged code. CLR allows managed code to interoperate with unmanaged code using COM Marshaler (Component of CLR).

__________________
S.VinothkumaR
Behind me is infinite power,
Before me is Endless Possibility,
Around me is Boundless Opportunity,
Why should I fear!

How can create multiple inheritance in c#, with example?

A class can implement multiple interfaces

public class A: Ix, Iy, Iz


This way we can achieve multiple inheritance.

__________________
S.VinothkumaR
Behind me is infinite power,
Before me is Endless Possibility,
Around me is Boundless Opportunity,
Why should I fear!

What is the procedure to add assembly to GAC to make it shared one?

Strong name, the assembly using snk and copy the assembly into the windows/assembly folder.

__________________
S.VinothkumaR
Behind me is infinite power,
Before me is Endless Possibility,
Around me is Boundless Opportunity,
Why should I fear!

How different are interface and abstract class in .Net?

When a class is not provided with full functionality then it is declared as abstract. It doesn’t support instance creation as well as it cannot be overridable to child class.

Interface is a collection of methods only without functionality. Interface is 90% same as abstract class.

__________________
S.VinothkumaR
Behind me is infinite power,
Before me is Endless Possibility,
Around me is Boundless Opportunity,
Why should I fear!

What are the Types of JIT and what is econo-JIT

Types of jit: prejit, ecno jit, normal jit

Pre jit: convert source code to native code in single completion of cycle. Normally this can be done at the time of deployment.

Econo jit: coverts the only called methods to native code, however it can be removed when are not required.

Normal jit: compiled the called methods to native code. In the methods can be compiles for the first time. For latter calls it can be displayed using cached items

__________________
S.VinothkumaR
Behind me is infinite power,
Before me is Endless Possibility,
Around me is Boundless Opportunity,
Why should I fear!

What is ISAPI?

ISAPI stands for Internet Server Application Programming Interface, is a specification that allows developers to extend IIS by writing components that process raw HTTP requests.

An ISAPI components ends up as DLL that IIS directs all requests and responses through.

__________________
S.VinothkumaR
Behind me is infinite power,
Before me is Endless Possibility,
Around me is Boundless Opportunity,
Why should I fear!

ISAPI

In ASP.Net ISAPI component has been evolved into http Handler.

ISAPI can be written only in C++, wherein http Handler can be written using any .Net compatible language.

__________________
S.VinothkumaR
Behind me is infinite power,
Before me is Endless Possibility,
Around me is Boundless Opportunity,
Why should I fear!

What is the Difference between web application and enterprise application?

Web applications are stored on a server and delivered to users over the Internet. A Web application is usually a three-tier structure, comprising a User Service tier (allowing user access to the application), a Business Service tier (allowing the user to carry out complex activities) and a Data Service tier (which allows data storage and retrieval).

An application that conforms to the Java 2 Platform Enterprise Edition.

__________________
S.VinothkumaR
Behind me is infinite power,
Before me is Endless Possibility,
Around me is Boundless Opportunity,
Why should I fear!

Hi,
What is soap and xml

SOAP, Simple Object Access Protocol is the standard format for requesting web services.

XML, Extensible Markup Language is the format for exchanging data between Internet Application.

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Krishnakumar.S
Beware of Everything -that is un true; stick to the Truth shall succeed slowly but steadily

Hi,
How do you handle data concurrency in .NET ?

One of the key features of the ADO.NET DataSet is that it can be a self-contained and disconnected data store. It can contain the schema and data from several rowsets in DataTable objects as well as information about how to relate the DataTable objects-all in memory. The DataSet neither knows nor cares where the data came from, nor does it need a link to an underlying data source. Because it is data source agnostic you can pass the DataSet around networks or even serialize it to XML and pass it across the Internet without losing any of its features. However, in a disconnected model, concurrency obviously becomes a much bigger problem than it is in a connected model.
In this column, I’ll explore how ADO.NET is equipped to detect and handle concurrency violations. I’ll begin by discussing scenarios in which concurrency violations can occur using the ADO.NET disconnected model. Then I will walk through an ASP.NET application that handles concurrency violations by giving the user the choice to overwrite the changes or to refresh the out-of-sync data and begin editing again. Because part of managing an optimistic concurrency model can involve keeping a timestamp (rowversion) or another type of flag that indicates when a row was last updated, I will show how to implement this type of flag and how to maintain its value after each database update.

__________________
Krishnakumar.S
Beware of Everything -that is un true; stick to the Truth shall succeed slowly but steadily

What are CLR, CTS and CLS?


Common Language Runtime(CLR)

The engine at the core of managed code execution. The runtime supplies managed code with services such as cross-language integration, code access security, object lifetime management, and debugging and profiling support.

Common Type System(CTS)

The specification that determines how the common language runtime defines, uses, and manages types.


Common Language Specification (CLS)

A subset of language features that is supported by a broad set of compliant tools. CLS-compliant components and tools are guaranteed to interoperate with other CLS-compliant components and tools.

What is reflection in Microsoft .NET Context?

Net Reflection :

The REFLECTION is used to read the metadata information like (type, reference and methods) which is derived from system.assembly.reflection class object.

The simple meaning is to read assembly information by using this system.assembly.reflection class.

__________________
S.VinothkumaR
Behind me is infinite power,
Before me is Endless Possibility,
Around me is Boundless Opportunity,
Why should I fear!

What does 'managed' mean in the .NET context?

The executed by the CLR environment it is called Managed Code, which can provide security, Exception Handling and Memory Management (Garbage Collection). Provide Type Safe.

It becomes light weighted code.

__________________
S.VinothkumaR
Behind me is infinite power,
Before me is Endless Possibility,
Around me is Boundless Opportunity,
Why should I fear!

What are IL and C#?

IL is an intermediate language, which is created when you compile the .net program. This is also a object oriented language. This makes cross language inheritance

C# is a new OOPs language which is developed by Microsoft. This language gives flexibility, mordern, easy to use.

__________________
S.VinothkumaR
Behind me is infinite power,
Before me is Endless Possibility,
Around me is Boundless Opportunity,
Why should I fear!

What are delegates?

A delegate is a class that can hold a reference to a method. Unlike other classes, a delegate class has a signature, and it can hold references only to methods that match its signature. A delegate is thus equivalent to a type-safe function pointer or a callback.

__________________
S.VinothkumaR
Behind me is infinite power,
Before me is Endless Possibility,
Around me is Boundless Opportunity,
Why should I fear!