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 ASP.Net interview questions & Answers, Dot Net interview questions & Answers, ASP.Net interview questions & Answers : 

1. What is difference between static class and singleton pattern
1. http://www.dotnetperls.com/singleton-static
2. What is difference between interface and abstract class in which situation you will use interface and abstract class
1. http://www.codeproject.com/Articles/258173/Interfaces-Vs-Abstract-Classes
2. http://kirillosenkov.blogspot.co.uk/2007/08/choosing-interface-vs-abstract-class.html
3. What is application domain
1. http://msdn.microsoft.com/en-us/library/2bh4z9hs(v=vs.80).aspx
4. Type of isolation in .net
1. http://msdn.microsoft.com/en-us/library/eh5d60e1(v=vs.80).aspx
5. What is difference between normal web service and wcf service
1. http://www.codeproject.com/Articles/139787/What-s-the-Difference-between-WCF-and-Web-Services
6. What are transaction in wcf
1. http://www.codeproject.com/Articles/38793/6-Steps-to-Enable-Transactions-in-WCF
2. http://msdn.microsoft.com/en-us/library/ff384250.aspx
• |Attribute the Interface method with [TransactionFlow(TransactionFlowOption.Allowed)] or Mandatory | Attribute the implementation with [OperationBehavior(TransactionScopeRequired = true)] |   Enable transactions in Service Config File  | Update the endpoint with the binding name bindingConfiguration="TransactionalBind" | use TransactionScope object to run multiple transactions 
7. What is difference between const and read only
1. http://geekswithblogs.net/BlackRabbitCoder/archive/2010/07/01/c-fundamentals---what-is-the-difference-between-const-and.aspx
• Const has to be initialized on declaration. Readonly can be initialized only once.
8. What is generic
1. http://www.csharp-station.com/Tutorials/lesson20.aspx
2. http://msdn.microsoft.com/en-in/library/0x6a29h6(v=vs.80).aspx
9. What is difference between overloading and overriding
10. What is ABC in wcf
1. http://msdn.microsoft.com/en-us/library/aa480190.aspx
2. http://www.c-sharpcorner.com/uploadfile/dhananjaycoder/abc-of-an-endpoint-in-wcf/
3. http://www.codeproject.com/Articles/406096/A-beginners-tutorial-for-understanding-Windows
11. What is use of GC
1. http://www.simple-talk.com/dotnet/.net-framework/understanding-garbage-collection-in-.net/
2. http://www.codeproject.com/Articles/39246/NET-Best-Practice-No-2-Improve-garbage-collector
12. What is use of using keyword? can we dispose custom class using keyword if yes then explain
1. http://msdn.microsoft.com/en-us/library/yh598w02.aspx
2. http://stackoverflow.com/questions/3544758/idisposable-vs-using-keyword
13. What is delegate and events
1. http://www.akadia.com/services/dotnet_delegates_and_events.html
2. http://www.dotnetfunda.com/articles/article904-6-important-uses-of-delegates-and-events.aspx
3. http://www.codeproject.com/Articles/4773/Events-and-Delegates-Simplified
4. http://www.csharp-station.com/tutorials/lesson14.aspx
14. Difference b/w ref and out parameter
1. http://stackoverflow.com/questions/135234/difference-between-ref-and-out-parameters-in-net
2. http://www.dotnetfunda.com/articles/article1134-difference-between-ref-and-out-parameter.aspx
3. http://www.dotnetfunda.com/forums/thread3303-difference-between-ref-and-out-parameters-in-csharp.aspx
15. What are latest feature in .Net 4.0
1. http://msdn.microsoft.com/en-us/library/vstudio/ms171868(v=vs.100).aspx
2. http://www.simple-talk.com/dotnet/asp.net/asp.net-4.0-features/
3. http://www.c-sharpcorner.com/uploadfile/john_charles/new-features-of-Asp-Net-4/
4. for 4.5 : http://msdn.microsoft.com/en-us/library/ms171868.aspx
16. Can we call web service using jquery if yes then explain the parameter for that
1. http://www.codeproject.com/Articles/66432/Consuming-Webservice-using-JQuery-ASP-NET-Applicat
17. what is Ajax in .net framework
1. http://msdn.microsoft.com/en-us/library/bb398874(v=vs.100).aspx
2. http://www.asp.net/ajaxlibrary/act.ashx
18. what is dynamic object
1. http://msdn.microsoft.com/en-us/library/ee461504.aspx
2. http://blogs.msdn.com/b/csharpfaq/archive/2009/10/19/dynamic-in-c-4-0-creating-wrappers-with-dynamicobject.aspx
3. http://geekswithblogs.net/sdorman/archive/2008/11/16/c-4.0-dynamic-programming.aspx
4. http://msdn.microsoft.com/en-us/library/system.dynamic.dynamicobject.aspx
19. what is session and type of session (explain)
1. http://www.codeproject.com/Articles/32545/Exploring-Session-in-ASP-Net
2. http://msdn.microsoft.com/en-us/library/ms178586(v=vs.80).aspx
20. if cookies disable then session will work or not
1. http://stackoverflow.com/questions/1401325/where-is-session-stored-if-cookie-is-disabled-on-clients-machine-what-is-actua
2. http://msdn.microsoft.com/en-us/library/aa479314.aspx
21. what is view state & difference between control state and view state
1. 
   
22. can we hack view state in which format view state save on client side
23. What is caching. caching done client side or server side
24. what is difference b/w authentication and authorization
25. explain life cycle of request from client side to server side
26. What are binding in wcf?
27. What is service and data contract in wcf
1. http://www.dotnet-tricks.com/Tutorial/wcf/3ISW280913-Understanding-different-types-of-WCF-Contracts.html
28. What is transaction in wcf
29. What is fault contract in wcf
30. If session is enable in wcf which binding support wcf service?
31. What are session type in wcf
32. How we can send value to base class from drive class?
33. What is index in c#
34. What is difference b/w Union and distinct
35. What is index in sql? difference b/w cluster index and non cluster index
36. What is ACID in sql
37. How many time of isolation in sql? which one you will use
38. Difference between sp and function
39. Type of function in sql
40. What is view in sql what is the use of view
41. What is magic table
42. What does mean by #table and ##table
43. How you will get max row from table
44. Difference between primary and unique key
45. What are trigger in sql
46. Difference between cursor and while loop
47. How stack & queue & heap works.
48. What is managed & unmanaged code?
49. How frequently GC runs?
50. Explain the mechanism of Stack & heap.
51. What are indexes and What is the difference between clustered and nonclustered indexes
52. How to implement Primary Key without Clustered index.
53. Extension methods in c#.
54. SQL : Write a query to find the fifth highest salary 
1. http://stackoverflow.com/questions/358542/how-to-find-fifth-highest-salary-in-a-single-query-in-sql-server 
55. What is a take operator
1. http://www.hookedonlinq.com/TakeOperator.ashx
56. Explain the ASP.Net page life cycle in depth
1. http://www.tutorialspoint.com/asp.net/asp.net_life_cycle.htm
2. http://www.codeproject.com/Articles/121096/Web-Server-and-ASP-NET-Application-Life-Cycle-in-D
57. How do you implement httpHandlers and HTTPModules 
1. http://www.codeproject.com/Articles/335968/Implementing-HTTPHandler-and-HTTPModule-in-ASP-NET
58. Delegates, Anonymous methods and Lambda expressions
1. http://codebetter.com/karlseguin/2008/11/27/back-to-basics-delegates-anonymous-methods-and-lambda-expressions/
2. http://www.codeproject.com/Articles/47887/C-Delegates-Anonymous-Methods-and-Lambda-Expressio
59. OOPS concept
1. http://msdn.microsoft.com/en-us/library/dd460654.aspx
60. What are SQL scan and seek 

Javascript interview questions

http://www.quora.com/How-do-you-judge-a-Javascript-programmer-by-only-5-questions

diff between call and apply

call accepts parameters explicitly ... comma seperated
apply accepts array of parameter

call : comma
apply : array

theFunction.apply(param1, ["test1", "test2"]);
theFunction.call(param1, "test1", "test2");


javascript : map and reduce

The reduce() method applies a function against an accumulator and each value of the array (from left-to-right) has to reduce it to a single value.

[0, 1, 2, 3, 4].reduce(function(previousValue, currentValue, index, array) {
  return previousValue + currentValue;
});

The map() method creates a new array with the results of calling a provided function on every element in this array.

var numbers = [1, 4, 9];
var roots = numbers.map(Math.sqrt);
// roots is now [1, 2, 3], numbers is still [1, 4, 9]

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