CSC .Net Interview Questions

1. Tell me abt ur project .. ? Roles and Responsibilities
2. What is meant  by 3-tier architecture ?
3. What is use of 3-tier architecture ? Difference between 3-tier architecture and 3 layered architecture



What does business logic layer and databases  layer contains ?
Take simple form in ur project , explain how data is access ( what r the methods u called for inserting the  values, passing the parameters from one tier to another)?
Difference  between Abstract classes and interface ?
Can we create the object for abstract classes ? is it necessary  to implement all the methods of abstract   classes  in  derived  class ?
Can I implement multiple number of interfaces in a single class ?
What is meant  by Partial Class ?
Difference between 2.0 and 3.5 ?
What are the new base  class methods in   .net 3.5  ?
What is meant by Object Instance Initialization in .net 3.5 ?
How can u handle the trouble shooting in ur project ? what is the use of  N-unit ? Did u use linq in ur project .. ? 
“var” data type ? and  tell me the extension methods ?
Can we write the code for I have List and I have the table employee with employ id, employee  name  ,I   fill the table in datasetset  ,by using “ForEach” loop collect result row collection for list ?Did u use Ajax in ur project ..
What is meant by  Ajax  ?  use of Ajax ?
Can I have a Multiple Update panel in a webpage ?
In which  Scenario we use  in conditional mode in Update panel ?
What is the use of Script Manger and Proxy Script Manger ? What are Ajax tools u used in ur project ?
Is it possible to invoke the modal popup from code behind ?
What happens when page is refresh On Modal popup ?
Page life cycle events ?
When the page is post-back by an event handlers (like  dropdownselectedindex, tnclickevent) When this event is executed before page load  or after page load ?
What is the “Auto Event Fired”  What happened  when  it is true,false ?
What is the use of View State, if it is turned off  what happened ?
In process and out process Session memory ?
In Which Scenario we can use Out process session ?
Difference between Application variables and session variables , where we maintain application state ?
In forms Authentication , cookie, true or false represents ?
Difference between the cookies and sessions ?
Types of cache ? vary by param ? time slide expiration ?
How can we set the time out of for  data caching ?
My stored procedure returns 3 results set , does the data reader can handle ?
Difference between data set and data reader ? which is light weighted ?
Where does  the caching the data located ?
What is meant by Nullable type ?
Did use Jquey,Json ?