ASP.NET 3.5 Interview Questions & Answers :

1. Explain the life cycle of an ASP .NET page.? 
Following are the events occur during ASP.NET Page Life Cycle:

1)Page_PreInit
2)Page_Init
3)Page_InitComplete
4)Page_PreLoad

Asp Interview Questions and Answers

What is ASP?
ASP stands for Active Server Pages. It is a server side technology which is used to display dynamic content on web pages. For example you could write code that would give your visitors different information, different images or even a totally different page depending on what browser version they are using.

.Net Deployment Interview Questions and Answers

What do you know about .NET assemblies?
Assemblies are the smallest units of versioning and deployment in the .NET application. Assemblies are also the building blocks for programs such as Web services, Windows services, serviced components, and .NET Remoting applications.

.Net Database Interview Questions and Answers

To test a Web Service you must create a windows application or web application to consume this service? It is True/False?
FALSE

How many classes can a single.NET DLL contain? 
Answer1:
As many

Answer2:
One or more

dotnet-interview-questions-answers

What is a Manifest?
An assembly manifest contains all the metadata needed to specify the assembly's version requirements and security identity, and all metadata needed to define the scope of the assembly and resolve references to resources and classes. The assembly manifest can be stored in either a PE (Portable Executable) file (an .exe or .dll) with Microsoft intermediate language (MSIL) code or in a standalone PE (Portable Executable) file that contains only assembly manifest information. The following table shows the information contained in the assembly manifest. The first four items the assembly name, version number, culture, and strong name information make up the assembly's identity.

What is the difference between VB and VB.NET?

Now VB.NET is object-oriented language. The following are some of the differences: 

Data Type Changes 

The .NET platform provides Common Type System to all the supported languages. This means that all the languages must support the same data types as enforced by common language runtime. This eliminates data type incompatibilities between various languages. For example on the 32-bit Windows platform, the integer data type takes 4 bytes in languages like C++ whereas in VB it takes 2 bytes. Following are the main changes related to data types in VB.NET: 

Advantages of migrating to VB.NET ?

Visual Basic .NET has many new and improved language features — such as inheritance, interfaces, and overloading that make it a powerful object-oriented programming language. As a Visual Basic developer, you can now create multithreaded, scalable applications using explicit multithreading. Other new language features in Visual Basic .NET include structured exception handling, custom attributes, and common language specification (CLS) compliance.

Using ActiveX Control in .Net

ActiveX control is a special type of COM component that supports a User Interface. Using ActiveX Control in your .Net Project is even easier than using COM component. They are bundled usually in .ocx files. Again a proxy assembly is made by .Net utility AxImp.exe (which we will see shortly) which your application (or client) uses as if it is a .Net control or assembly. 

What is the difference between ADO and ADO.NET?

ADO uses Recordsets and cursors to access and modify data. Because of its inherent design, Recordset can impact performance on the server side by tying up valuable resources. In addition, COM marshalling - an expensive data conversion process - is needed to transmit a Recordset. ADO.NET addresses three important needs that ADO doesn't address:

.Net Interview Questions and Answers

What is .NET?
.NET is essentially a framework for software development. It is similar in nature to any other software development framework (J2EE etc) in that it provides a set of runtime containers/capabilities, and a rich set of pre-built functionality in the form of class libraries and APIs

C# Interview Questions and Answers

How do you mark a method obsolete?

[Obsolete] public int Foo() {...}
or
[Obsolete(\"This is a message describing why this method is obsolete\")] public int Foo() {...}
Note: The O in Obsolete is always capitalized.

C# interview questions and answers

What's C# ?
C# (pronounced C-sharp) is a new object oriented language from Microsoft and is derived from C and C++. It also borrows a lot of concepts from Java too including garbage collection.

C# interview questions and answers

1. What’s the advantage of using System.Text.StringBuilder over System.String? StringBuilder is more efficient in the cases, where a lot of manipulation is done to the text. Strings are immutable, so each time it’s being operated on, a new instance is created.

What is size of void pointer in C?

Size of any type of pointer in c is independent of data type which is pointer is pointing i.e. size of all type of pointer (near) in c is two byte either it is char pointer, double pointer, function pointer or null pointer.  Void pointer is not

What is difference between pass by value and pass by reference? in C

In c we can pass the parameters in a function in two different ways.

(a)Pass by value: In this approach we pass copy of actual variables in function as a parameter. Hence any modification on parameters inside the function will not reflect in the actual variable. For example:

Swap two variables without using third variable in C

#include<stdio.h>

int main(){

    int a=5,b=10;

//process one

    a=b+a;

    b=a-b;

    a=a-b;

    printf("a= %d  b=  %d",a,b);

//process two

    a=5;

    b=10;

    a=a+b-(b=a);

    printf("\na= %d  b=  %d",a,b);

//process three

    a=5;

    b=10;

    a=a^b;

    b=a^b;

    a=b^a;

    printf("\na= %d  b=  %d",a,b);

   

//process four

    a=5;

    b=10;

    a=b-~a-1;

    b=a+~b+1;

    a=a+~b+1;

    printf("\na= %d  b=  %d",a,b);

   

//process five

    a=5,

    b=10;

    a=b+a,b=a-b,a=a-b;

    printf("\na= %d  b=  %d",a,b);

    return 0;

}

Write a c program to print Hello world without using any semicolon.

Solution: 1

void main(){

    if(printf("Hello world")){

    }

}