TCS
Dot net interview questions for experienced Candidates
One of my friend attended TCS dotnet interview in Bangalore.
Below is his Interview experience.
First Round of technical Interview:
Interviewer started with, asking about the personal details,
work experience and skill rating on asp.net mvc , c#,Oops and sqlserver.
1.
How
does ‘page lifecycle’ of ASP.Net MVC works?
2.
How
route table has been created in ASP.NET ASP.Net MVC?
Ans
: In short, Method : "RegisterRoutes()" is used for registering the
routes which will be added in "Application_Start()" method of
global.asax file, which is fired when the application is loaded or started.
3.
Why
to use "{resource}.axd/{*pathInfo}" in routing in ASP.Net MVC?
4.
How
can we call a JavaScript function on the change of a Dropdown List in ASP.Net
MVC? Asked to write the sample code.
5.
How stage-management concept works in asp.net MVC?
Ans :
Interviewer asked about the uses of
Tempdata, Viewbag, ViewData,Sessions.
6.
Does
Tempdata hold the data for other request in ASP.Net MVC?
7.
Explain
Peek method in Tempdata in ASP.Net MVC?
Ans : Similar to Keep method we have one more
method called "Peek" which is used for the same purpose. This method
used to read data in Tempdata and it maintains the data for subsequent request.
string A4str =
TempData.Peek("TT").ToString();
8. How you can send the result
back in JSON format in MVC?
Ans : return Json( objCustomer,JsonRequestBehavior.AllowGet);
a9. What are the action filters
available in asp.net mvc?
Ans :
An action filter is an attribute that you can apply to a controller action --
or an entire controller -- that modifies the way in which the action is
executed. The ASP.NET MVC framework includes several action filters.
· OutputCache – This action filter caches the output of a
controller action for a specified amount of time.
· Handle Error – This action filter handles errors raised
when a controller action executes.
·
Authorize – This action filter enables you to restrict access to a particular
user or role
10. What methods do we need to overrider
to implement custom action filter?
Ans :
1. OnActionExecuting()
2. OnActionExecuted()
3. OnResultExecuting()
4. OnResultExecuted
11. Can we use multiple models for a
single view? How do you achieve this?
No, we can't use multiple models for a single view at a time. But we can handle this scenario, by creating a view model.
12. What are the design patterns
followed in your project?
Ans : I said
we followed Repository patter, factory pattern
13. What is the single ton pattern? In
which scenario we can use singleton pattern?
14. Difference between abstract class
and interface?
Sr.No
|
Abstract
Classes
|
Interface
|
1
|
Abstract class can extend only one class or one abstract class at
a time.
|
Interface can extend any number of interfaces at a time.
|
2
|
Abstract class can extend from a class or from an abstract
class.
|
Interface can have only abstract methods.
|
3
|
Abstract class can have both abstract and concrete
methods.
|
Interface can have only abstract methods.
|
4
|
A class can extend only one abstract class.
|
A class can implement any number of interfaces.
|
5
|
Abstract class can have protected public and public
abstract methods.
|
Interface can have only public abstract methods i.e. by default.
|
6
|
Abstract class can have static, final or static final variable
with any access specifier.
|
Interface can have only static final (constant) variable i.e. by
default.
|
15. Does the abstract class should contain at
least one abstract method?
Ans : No, not required
16. Why we have interface as we can do everything
with abstract class?
17. How do you maintain security for your application?
Ans:
Since, our applications is an intranet,
we used windows authentication
18. How to implement windows
authentication? How do you specify roles and permissions to the users?
19. I have 10 text boxes and a button.
The button should be enabled only after I have filled the values in all the
textboxes. How do you do that?
20. I have a transaction in the
database. Inside that, I have a nested transaction. I have written an insert
statement and committed. Now in the outer transaction, if I write rollback,
will the committed thing inside the nested transaction will be roll-backed?
Please share your interview experiences to my Mail id : nsubhash007@gmail.com