Important Interview Questions to know in Asp.net

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1. What CLR Does?
2. Explain CTS (Common Type System)?
3. Explain CLS (Common Language Specification)
4. Explain Boxing and unboxing?
5. Explain Variables in C#.
6. Explain Jump statements in c#.
7. What is nullable Type?
8. Why does string in .net is immutable?
9. Explain string Comparison?
10. Explain String Interning?
11. Explain String Pooling?
12. Explain string builder functioning behind the scene?
13. Explain Indexers?
14. Explain Iterators?
15. Explain secure strings?
16. Explain Enumerated types.
17. Explain interface.
18. Should I design a base type or an interface?
19. Explain App domain?
20. Explain Threading in dot net?
21. What is diffgram?
22. How assignment of value is different in value type and reference type?
23. Difference between shallow copy and deep copy of object?
24. What is use of using keyword?
25. What is cloning?
26. What is Assembly? Difference between Private and Shared Assembly? How can we make shared assembly?
27. Why value type cannot be inherited?
28. What is the difference between an event and a delegate?
29. What size is .net object?
30. When and How to Use Dispose and Finalize in C#?
31. What is difference between equivalent of objects and identical of objects?
32. What's the difference between the System.Array.CopyTo() and System.Array.Clone()?
33. How ado.net maintain transaction of data?
34. What is delay signing?
35. Can you declare a C++ type destructor in C# like ~MyClass ()?
36. What is difference between == and .Equals?
37. What is the difference between structures and enumeration?
38. Should I make my destructor virtual?
39. How do I declare a pure virtual function in C#?
40. Where would you use an iHTTPModule, and what are the limitations of any approach you might take in implementing one?
41. What is difference between code base security and role base security? Which one is better?
42. Is it possible to prevent a browser from caching an aspx page?
43. What is the difference between Debug. Write and Trace. Write?
44. What is difference between repeater over datalist and datagrid?
45. Describe Main Characteristics of static functions?
46. What is DataReader? Difference between datareader and dataset?
47. What is DLL hell?
48. What is Temporary Table? How can we create it?
49. What is strong key and what is the use of it?
50. What is Impersonation?
51. What is Partitioned Tables?
52. What types of data validation events are commonly seen in the client-side form validation? Web service support?
54. What is PreProcessor in .NET and type , where it use?
55. Please brief not about XSD, XSLT & XML?
57. What is Polymorphism?
58. What is implicit operator overloading?
59. What is Operator Overloading?
60. What is difference between http handler and http module?
61. What is Caching? Where is it use? Why and when?
62. What is Cursor? Define Different type of cursor?
63. What is Views?
64. What is Triggers? What are the different types of triggers in Sql Server 2005?
65. What is use of extern keyword?
66. What is base assembly of Dot net?
67. What’s difference between Shadowing and Overriding?
68. What’s difference between Server.Transfer and response.Redirect?
69. Can you explain in brief how the ASP.NET authentication process works?
70. What are the various ways of authentication techniques in ASP.NET?
71. How does authorization work in ASP.NET?
72. What’s difference between Datagrid, Datalist and repeater?
73. What exactly happens when ASPX page is requested from Browser?
74. What is the result of ―select firstname, secondname from emp order by 2‖?
75. How can we create proxy class without VS?
76. How can we create overloaded methods in Web Service?
77. How can we maintain State in WebService?
78. ASP.Net Page Life Cycle ?
79. What are the different data types in dot net?
80. What is Static class?
81. How can you increase SQL performance?
82. What is ACID fundamental and what are transactions in SQL SERVER?
83. If we have multiple AFTER Triggers on table how can we define the sequence of the triggers?
84. Give the output of following code ?
85. Give the output of following code?
86. Give output of following code?
87. What is Performance tips and tricks in .net application?
88. How Garbage Collector Works?
89. How objects are allocated on heap?
90. What causes finalize methods to be called?
91. What is Sync Block Index and object pointer?
92. What is JIT compiler? What is its role?
93. How Types are stored in dot net?
94. Explain structure of GAC in windows?
95. What is Advantage and disadvantage of GC?
96. What is Reflection? Explain about reflection performance
97. What are members of a type?
98. Explain bridge between ISAPI and Application Domains?
99. How Securely Implement Request Processing, Filtering, and Content Redirection with HTTP Pipelines in ASP.NET?
100. Is there any difference in the way garbage collection works when it is called automatically by the Runtime
environment, and when it is invoked intentionally by the programmer?
101. What is probing?
102. What is compilation and execution procedure for asp.net page?
103. If need an array of objects then which option when better ArrayList Class or List Generic Class ? Array[] / ArrayList / List<T> Difference i.e. string[] arraylist.add(string) / List<string> ?
104. Custom Paging in ASP.NET 2.0 with SQL Server 2005
106. What is the difference between a Struct and a Class?
108. What is Web Gardening? How would using it affect a design?
109. What is view state? Where it stored? Can we disable it?
110. Can you debug a Windows Service? How?
111. What are the different ways a method can be overloaded?
112. How do you handle data concurrency in .NET?
114. What are jagged array?
115. Who host CLR? How windows identify where running assembly is managed or not?
116. Conceptual view of DotNet Framework
117. Explain Delegates?
118. Explaint about Events?
119. How to: Connect Event Handler Methods to Events ?
120. How to: Consume Events in a Web Forms Application ?
121. What’s the difference between localization and globalization?
122. Difference between primitive types, ref types and value types?
123. Difference between gettype() and typeof
124. What is Microsoft SharePoint Portal Server?
127. What is difference between static and singleton classes?
128. Explain Advantages of WCF.
129. What is dependency Injection?
130. What is difference between STA & MTA?
132. How does a database index work? 178
133. Give some threading best practices?
134. What is object pooling?
135. Static and Dynamic Assembly.
136. Why we have to consider object in lock statement as private?
137. How can we make class immutable? Give Example
138. How to override Equal, GetHashCode?
139. What is SSL and how can we implement it in our asp.net website?
140. What is difference between runtime polymorphism and compile time polymorphism?
141. What is difference between real proxy and transparent proxy?
142. What is prologue code?
143. Explain string class or what is behind the scene of string?
144. What is Encapsulation, polymorphism and abstraction? Give real time examples?
145. Why we use command object?
146. What is Satellite Assembly? How application knows which assembly should be loaded for particular culture?
147. Http request and response life cycle in ASP.Net?
148. If any body is editing data in webpage and at the time of editing row has been explicitly locked by user but if
any one stop website processing then how will handle locking?
149. Applied use of Inheritance ( i.e aggregation, specialization etc)
150. Explaing Connection pooling
151. Difference between dbnull and null?
152. What is snapshot in sql server?