dot net and Sql interview questions for experienced

After clearing telephonic interview, I was went "India Bulls"  for face to face technical round, here I write some questions which is asked there

Telephonic interview question of India Bulls

Question 1 What is means of abstraction and encapsulation ? (Answer this question as real time scenario).

Question 2 What is difference between  readonly and constant in c#, give an example in real time scenario or say where we need to use these in our project?

Question 3 What is Abstract class?

Question 4 does abstract class have constructor?

Question 5 can we create object of abstract class if yes or no then why?

Question 6 if no then why we define constructor in abstract class?

Question 7 it is necessary to declare abstract class all methods will be abstract ?

Question 8 it is necessary to declare abstract class all methods will be abstract ?

Question 8  Can we declare abstract methods in normal classes ?

Question 9  If yes then why we need of abstract class ?

Question 10  If yes then why we need of abstract class ?

Question 11  The given below snippet is correct or not ?

class  Test     {         public abstract void meth1();         public virtual void meth2();     }

Question 12  What is difference between abstract class and Interface and give the real time example to using both of them ?

Question 13  What is output of given below snippet and why?

using System; namespace ConsoleApplication2 {     class Program     {         static void Main(string[] args)         {             Test2 obj = new Test2();             Console.ReadKey();         }     }     class  Test1     {         static Test1()         {             Console.WriteLine("Test1");         }     }     class  Test2:Test1     {         static Test2()         {             Console.WriteLine("Test2");         }     } }

Question 14  What is output of given below snippet and why?

using System; namespace ConsoleApplication2 {     class Program     {         static void Main(string[] args)         {             Test2 obj = new Test2();             Console.ReadKey();         }     }     class  Test1     {         public Test1()         {             Console.WriteLine("Test1");         }     }     class  Test2:Test1     {         public Test2()         {             Console.WriteLine("Test2");         }     } }

Question 15  What is static class and real time use of static class ?

Question 16  What is delegate and real time working of delegate ?

Question 17  What id Dispose() and when we use it?

Question 18  What is difference between ViewState and hiddenfield ?

Question 19  What is Session and and what is InProc and OutProc and when we use it and difference between them ?

Question 20  When we use cookie , given an example  when you need to use cookie?

Question 21  When we use cookie , given an example  when you need to use cookie?

Question 22  What is WCF and WebService?

Question 23  Can we return a table from SQL function?

Question 24  What is view in sql?

Question 25  Can we perform insert , update and delete operation using View in SQL?

Question 26  What is trigger , define step by step how trigger executed and when we need to use of triggers in sql?

Question 27  What is magic table in sql?

Question 28  What is temporary table in sql , use of temporary table  and difference between local and global temporary tables?

Question 29  can we call stored procedure inside function in sql?

Question 30  can we call function inside stored procedure in sql?

Question 31  how many no of out parameter declare in stored procedure?

Question 32  Write a query to output look like?

Table is:

Column1	Column2
A	100
B	200
C	300
A	200
B	300

Output is:

 

Column1	Column2	Count
A	300	2
B	500	3
C	300	1

Question 33  Write a query of uncolored area suppose two circle is two tables in sql?

Question 34  Write a query of uncolored area suppose two circle is two tables in sql?

Table is:

Column1

2

3

4

1

5

Output is:

Column 2	Cumulative Sum
2	2
3	5
4	9
1	10
5	15

Question 35  What is difference between DataSet and SqlDataReader and real time use of it and why dataset come after SqlDataReader ?

Question 36  What is difference between var and dynamic keyword in c# ?

Question 37  What is value type and reference type in c# if int is value type then please explain given below snippet 

int a = new int();

where its value is stored (heap or stack and why)?

Question 38 What is enum in c#, when we use it?

Question 39 What is struct in c#?

Question 40 Explain given below snippet?

private void Test()     {         try         {             //execption occur         }         catch {         //here also execption ,    then what will be happen the exception is handled or not   ?    //because we want to insert some value in sql table how can you handle it         }         finally         {                 }     }

dot net interview questions for experienced professionals

Last Friday I got call from "India Bulls" for telephonic interview as technical round, so in this article I am sharing question of that interview. Firstly interviewer introduce him self and then asked some question related to c#, ASP. net and SQL. The questions are:

Question 1 What is Managed and Unmanaged code?

Question 2 What is Encapsulation and abstraction and difference between them ?

Question 3 What is Interface and abstract class and difference between them ?

Question 4  What is difference between array and array list ?

Question 5  What is Generic and collection ?

Question 6  How to implement interface when both interface have same method name
For Example

Interface I1{ void show();}
Interface I2{ void show();}
Class Test, I1,I2{}    ?

Question 7  What is http handler?

Question 8  What is difference between Response.Write() and Response.OutPut.Write()?

Question 9  What is difference between ViewState and Session?

Question 10  What is Transaction Management?

Question 11  Type of Temporary Table in SQL?

Question 12 Difference between truncate and delete?

Question 13 Difference between Stuff() and Replace() function in SQL?

Question 14 Which one query executed fast and Why?

Query 1 select count(*)  from table name

Query 2 select Count(Id) from table name

Query 3 select Count(1) from table name


Question 15  How to insert into table though xml?

Question 16  What is static class in c#?

Question 17  Explain constraints in SQL?