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Introduction (PDF book attached here in resources)
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Introduction
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Q1. What is C#? What is the difference between C# and .NET?
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Q2. What is OOPS? What are the main concepts of OOPS?
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Q3. What are the advantages of OOPS?
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Q4. What are the limitations of OOPS?
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Q5. What are Classes and Objects?
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Q6. What are the types of classes in C#?
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Q7. Is it possible to prevent object creation of a class in C#?
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Q8. What is Property?
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Q9. What is the difference between Property and Function?
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Q10. What are Namespaces?
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Introduction
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Q11. What is Inheritance? When to use Inheritance?
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Q12. What are the different types of Inheritance?
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Q13. Does C# support Multiple Inheritance? How to you implement
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Q14. How to prevent a class from being Inherited?
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Q15. Are private class members inherited to the derived class?
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Q16. What is Abstraction? How to implement abstraction in real applications?
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Q17. What is Encapsulation? How to implement encapsulation in real applications?
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Q18. What is the difference between Abstraction and Encapsulation?
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Q19. What is Polymorphism and what are its types? When to use polymorphism?
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Q20. What is Method Overloading? In how many ways a method can be overloaded?
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Q21. When should you use method overloading in real applications?
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Q22. If two methods have same except return type, then methods are overloaded?
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Q23. What is the difference between Overloading and Overriding?
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Q24.Use of Overriding ? When should I override the method in real applications ?
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Q25. Method is marked as virtual,do we have to "override" it from the child base
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Q26. What is the difference between Method Overriding and Method Hiding?
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Introduction
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Q27. What is the difference between an Abstract class and an Interface? V.IMP.
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Q28. When to use Interface and when Abstract class in real applications?
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Q29. Why to create Interfaces in real applications?
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Q30.Can we define body of Interfaces methods ?
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Q31. Can you create an instance of an Abstract class or an Interface?
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Q32. Do Interface can have a Constructor?
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Q33. Do abstract class have Constructors in C#?
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Q34. What is the difference between abstraction and abstract class?
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Q35. Can Abstract class be Sealed or Static in C#?
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Q36. Can you declare abstract methods as private in C#?
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Q37. Does Abstract class support multiple Inheritance?
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Mock Interview 1
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Introduction
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Q38. What are Access Specifiers?
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Q39. What is internal access modifier? Show example.
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Q40. What is the default access modifier in a class?
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Q41. What is Boxing and Unboxing? Where to use them in real applications?
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Q42. Which one is explicit Boxing or Unboxing?
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Q43. Is Boxing and Unboxing good for performance?
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Q44. What are the basic string operations in C#?
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Q45. What is the difference between “String” and “StringBuilder”?
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Q46. When to use String and when StringBuilder in real applications?
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Q47. What is String Interpolation in C#?
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Introduction
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Q48. What are the Loop types in C#? When to use what in real applications?
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Q49. What is the difference between “continue” and “break” statement?
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Q50. What are the alternative ways of if-else conditions? When to use what?
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Q51. How to implement Exception Handling in C#?
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Q52. Can we execute multiple Catch blocks?
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Q53. When to use Finally in real applications?
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Q54. Can we have only “Try” block without “Catch” block?
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Q55. What is the difference between Finally and Finalize?
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Q56. What is the difference between “throw ex” and “throw”?
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Introduction
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Q57. Explain Generics in C#? When and why to use them?
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Q58. What are Collections in C# and what are their types?
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Q59. What is the difference between Array and ArrayList?
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Q60. What is the difference between Arraylist and Hashtable?
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Q61. What is the difference between List and Dictionary Collections?
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Q62. What isВ IEnumerable in C#?
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Q63. What is the difference between IEnumerable and IEnumeratorВ in C#?
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Q64. What is the difference between IEnumerable & IQueryable?
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Mock Interview 2
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Introduction
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Q65. What is a Constructor? When to use constructor in real applications?
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Q66. What are the types of constructor?
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Q67. What is Default constructor?
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Q68. What is Parameterized constructor?
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Q69. What is Static constructor? What is the use in real applications?
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Q70. Can we have parameters or access modifier in static constructor?
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Q71. What is Copy constructor?
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Q72. What is Private constructor? What is the use?
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Q73. What is Constructor overloading?
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Q74. What is Destructor?
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Q75. Can you create object of class with private constructor in C#?
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Q76. If base & child both class have constructors, which will be called first?
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Introduction
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Q77. What is a Method in C#?
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Q78. Difference between Pass by Value and Pass by Reference Parameters?
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Q79. How to return more than one value from a method in C#?
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Q80. What is the difference between “out” and “ref” parameters?
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Q81. What is “params” keyword? When to use params keyword in real applications?
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Q82. What are optional parameters in a method?
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Q83. What are named parameters in a method?
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Q84. What are extension Methods? When to use them? V Imp
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Q85. What are Delegates in C#? When to use delegates in real applications?
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Q86. What are Multicast Delegates?
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Q87. What are Anonymous Delegates in C#?
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Q88. What are the differences between Events and Delegates?
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Introduction
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Q89. What is “this” keyword in C#? When to use it in real application?
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Q90. What is the purpose of “using” keyword in C#?
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Q91. Can we use Using keyword with other classes apart from DB Connection?
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Q92. What is the difference between “is” and “as” operators?
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Q93. What is the difference between “Readonly” and “Constant” variables?
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Q94. What is “Static” class? When to use it?
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Q95. What is the difference between “var” and “dynamic” in C#?
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Q96. What is Enum keyword used for?
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Q97. Is it possible to inherit Enum in C#?
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Q98. What is the use of Yield keyword in C#?
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Introduction
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Q99. What is LINQ? When to use LINQ in real applications?
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Q100. What are the advantages & disadvantages of LINQ?
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Q101. What is Lambda Expressions? What is the use in real applications?
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Q102. What is the difference between First and FirstOrDefault methods in LINQ?
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Mock Interview 3
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Introduction
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Q103. What are the important components of .NET framework?
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Q104. What is an Assembly? What are the different types of assembly in .NET?
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Q105. What is GAC?
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Q106. What is Reflection?
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Q107. Serialization and Deserialization? What are the types of serialization?
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Q108. What is meant by Globalization and Localization?
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Q109. What are Window Services?
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Introduction
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Q110. What is Garbage Collection(GC)?
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Q111. What are Generations in garbage collection?
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Q112. What is the difference between “Dispose” and “Finalize”?
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Q113. What is the difference between “Finalize” and “Finally” methods?
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Q114. Can we force Garbage Collector to run?
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Introduction
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Q115. What is the difference between Process and Thread?
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Q116. Explain Multithreading?
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Q117. What is the difference between synchronous and asynchronous programming?
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Q118. Difference between Threads & Tasks? Advantages of Tasks over threads ?
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Q119. What is the role of Async and Await ?
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Mock Interview 4
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Introduction
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Q120. What is the difference between DBMS and RDBMS?
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Q121. What is a Constraint is SQL? What are its types.
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Q122. What is the difference between Primary key and Unique key?
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Q123. What are Triggers and types of triggers?
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Q124. What is a View?
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Q125. What is the difference between Having clause and Where clause?
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Q126. What is Sub query or Nested query or Inner query in SQL?
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Q127. What is Auto Increment/ Identity column in SQL Server?
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Introduction
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Q128. What are Joins in SQL?
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Q129. What are the types of Joins in SQL Server?
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Q130. What is Self-Join?
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Q131. What are Indexes in SQL Server?
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Q132. What is Clustered index?
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Q133. What is Non-Clustered index?
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Q134. What is the difference between Clustered and Non-Clustered index?
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Q135. How to create Clustered and Non-Clustered index in a table?
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Q136. In which column you will apply the indexing to optimize this query?
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Introduction
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Q137. What is the difference between Stored Procedure and Functions?
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Q138. How to optimize a Stored Procedure or SQL Query?
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Q139. What is a Cursor? Why to avoid them?
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Q140. What is the difference between scope_identity and @@identity?
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Q141. What is CTE in SQL Server?
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Q142. What is the difference between Delete, Truncate and Drop commands?
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Q143. How to get the Nth highest salary of an employee?
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Q144. What are ACID properties?
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Q145. What are Magic Tables in SQL Server?
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Mock Interview 5
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Introduction
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Q146. What is MVC (Model View Controller)? Explain MVC Life cycle.
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Q147. What are the advantages of MVC over Web Forms (atleast 3)?
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Q148. What are the different return types of a controller Action method?
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Q149. What are Filters and their types in MVC?
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Q150. What is Authentication and Authorization in ASP.NET MVC?
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Q151. What are the types of Authentication in ASP.NET MVC?
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Q152. What is Output Caching in MVC? How to implement it?
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Q153. What is Routing in MVC?
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Q154. Explain Attribute Based Routing in MVC?
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Introduction
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Q155. What is the difference between ViewData, ViewBag & TempData?
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Q156. How can we pass the data from controller to view in MVC?
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Q157. What is Partial View?
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Q158. What are Areas in MVC?
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Q159. How Validation works in MVC? What is Data Annotation?
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Q160. Explain the concept of MVC Scaffolding?
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Q161. What is Bundling and Minification in MVC?
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Q162. How to implement Security in web applications in MVC?
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Mock Interview 6
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Introduction
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Q163. What are the events in Page Life Cycle? In which event the controls loaded
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Q164. What is the difference between Server.Transfer() and Response.Redirect()?
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Q165. What are the different types of Caching?
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Q166. What are the types of state management?
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Q167. Where the ViewState is stored after the page postback?
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Q168. What are the different ways to store session state in asp.net?
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Q169. What is cookie less session?
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Q170. How to force all the validation controls to run in a page in web forms?
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Introduction
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Q171. What are the main components of ADO.NET?
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Q172. What is Connected architecture and Disconnected architecture?
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Q173. What are the different Execute Methods of ADO.NET?
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Q174. What are the Authentication techniques used to connect to SQL Server?
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Q175. What is ORM? What are the different types of ORM?
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Q176. What is Entity Framework?
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Q177. How will you differentiate ADO.NET from Entity Framework?
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Q178. How Entity Framework works? OR How to setup EF?
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Q179. What is meant by DBContext and DBSet?
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Q180. What are the different types of development approaches used with EF?
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Q181. What is the difference between LINQ to SQL and Entity Framework?
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Mock Interview 7
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Introduction
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Q182. What is Web API? What is the purpose of Web API?
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Q183. What are Web API advantages over WCF and web serivces?
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Q184. What are HTTP verbs or HTTP methods?
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Q185. What is the difference Rest API and Web API?
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Q186. What are REST guidelines? What is the difference between Rest and Restful?
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Q187. Is it possible to use WCF as Restful services?
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Q188. How to consume Web API from a .NET MVC application?
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Q189. What is the difference between Web API and MVC Controller?
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Introduction
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Q190. What are the types of authentication techniques in web API?
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Q191. What is Basic Authentication in Web API?
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Q192. What is API Key Authentication in Web API?
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Q193. What is Token based authentication?
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Q194. What is JWT Authentication?
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Q195. What are the parts of JWT token?
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Q196. Where JWT token reside in the request?
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Introduction
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Q197. How to test Web API? What are the tools?
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Q198. What are main Return Types supported in Web API?
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Q199. What is the difference between HTTPResponseMessage and IHttpActionResult?
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Q200. What is the difference between IActionResult and IHttpActionResult?
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Q201. What is Content Negotiation in Web API?
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Q202. What is MediaTypeFormatter class in Web API?
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Q203. What are Response Codes in Web API?
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Mock Interview 9
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Introduction
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Q204. What is .NET Core?
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Q205. What is .NET Standard?
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Q206. What are the advantages of .NET Core over .NET framework?
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Q207. What is the role of Program.cs file in ASP.NET Core?
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Q208. What is the role of ConfigureServices method?
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Q209. What is the role of Configure method?
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Q210. Describe the complete Request Processing Pipeline for ASP.NET Core MVC?
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Q211. What is the difference between .NET Core and .NET 5?
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Q212. What is Metapackage? What is the name of Metapackage in ASP.NET Core?
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Introduction
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Q213. What is Dependency Injection?
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Q214. How to implement Dependency injection in .NET Core?
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Q215. What are the advantages of Dependency Injection in .NET Core?
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Q216. How to use Dependency Injection in Views in ASP.NET Core?
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Introduction
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Q217. What are the types of Service Lifetimes of an object/ instance in ASP.NET
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Q218. What is AddSingleton, AddSoped and AddTransient method?
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Q219. What is Middleware in ASP.NET Core? What is custom middleware?
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Q220. How ASP.NET Core Middleware is different from HttpModule?
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Q221. What is Request Delegate?
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Q222. What is Run(), Use() and Map() method?
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Q223. What are the types of Hosting in ASP.NET Core? What is In process and Out
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Q224. What is Kestrel? What is the difference between Kestrel and IIS?
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Introduction
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Q225. What is Routing? Explain attribute routing in ASP.NET Core?
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Q226. Explain default project structure in ASP.NET Core application?
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Q227. How ASP.NET Core serve static files?
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Q228. What are the roles of Appsettings.Json and Launchsetting.Json file?
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Q229. What are the techniques to save configuration settings in .NET Core
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Q230. What is CORS? Why CORS restriction is required? Hot to fix CORS error?
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Q231. What is In-Memory caching & Distributed Caching? When to use what?
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Q232. How to handle errors in ASP.NET Core?
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Q233. What are Razor pages in .NET Core?
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Mock Interview 10
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Introduction
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Q234. What are SOLID Principles? How they different from Design Patterns?
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Q235. What is Single Responsibility Principle?
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Q236. What is Open-closed Principle?
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Q237. What is Liskov Substitution Principle?
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Q238. What is Interface Segregation Principle?
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Q239. What is Dependency Inversion Principle?
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Q240. What is DRY principle?
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Introduction
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Q241. What are Design Patterns and what problem they solve?
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Q242. What are the types of Design Patterns?
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Q243. What are Creational Design Patterns?
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Q244. What are Structural Design Patterns?
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Q245. What are Behavioral Design Patterns?
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Q246. What is Singleton Design Pattern?
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Q247. How to make singleton pattern thread safe?
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Q248. What is Factory pattern? Why to use factory pattern?
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Q249. How to implement Factory method pattern?
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Q250. What is Abstract Factory pattern?
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Mock Interview 11
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Overview - Mock Interview 1
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Mock Interview 1
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Overview - Mock Interview 2
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Mock Interview 2
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Overview - Mock Interview 3
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Mock Interview 3
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Overview - Mock Interview 4
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Mock Interview 4
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Overview - Mock Interview 5
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Mock Interview 5
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End