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Abstract class vs Interface in C# :- https://youtu.be/0EnSPBVrbG0

Syllabus of C# Interview Questions with Answers Series -

• 30 Important C# interview Questions and Answers - Part 1.
  Question 1 :- Explain difference between .NET and C# ?
  Question 2 :- .NET Framework vs .NET Core vs .NET 5 Question 3 :- What is IL ( Intermediate Language) Code ?
  Question 4 :- What is the use of JIT ( Just in time compiler) ?
  Question 5 :- Is it possible to view IL code ?
  Question 6 :- What is the benefit of compiling in to IL code ?
  Question 7 :- Does .NET support multiple programming languages ?
  Question 8 :- What is CLR ( Common Language Runtime) ?
  Question 9 :- What is managed and unmanaged code ?
  Question 10 :- Explain the importance of Garbage collector ?
  Question 11 :- Can garbage collector claim unmanaged objects ?
  Question 12 :- What is the importance of CTS ?
  Question 13 :- Explain CLS ?
  Question 14 :- Difference between Stack vs Heap ?
  Question 15 :- What are Value types & Reference types?
  Question 16 :- Explain boxing and unboxing ?
  Question 17 :- What is consequence of boxing and unboxing ?
  Question 18 :- Explain casting,implicit casting and explicit casting ?
  Question 19 :- What can happen during explicit casting ?
  Question 20 :- Differentiate between Array and ArrayList ?
  Question 21 :- Whose performance is better array or arraylist ?
  Question 22 :- What are generic collections ?
  Question 23 :- What are threads (Multithreading)?
  Question 24 :- How are threads different from TPL ?
  Question 25 :- How do we handle exceptions in C#(try/catch)?
  Question 26 :- What is the need of finally?
  Question 27 :- Why do we need the out keyword ?
  Question 28 :- What is the need of Delegates ?
  Question 29 :- What are events ?
  Question 30 :- Whats the difference between Abstract class and interface ?

• C# Interview Questions & Answers - Part 2.
  Question 31 - What is a Delegate and how to create a Delegate?
  Question 32 - Where have you used Delegates?
  Question 33 - What is a Multicast Delegates?
  Question 34 - What is an Event?
  Question 35 - How to Create an Event?
  Question 36 - Delegate VS Events.

• C# Interview Questions & Answers - Part 3.
  Question 37 :- What is a class and object ?
  Question 38 :- Abstraction vs Encapsulation?
  Question 39 :- Explain Inheritance ?
  Question 40 :- Explain virtual keyword ?
  Question 41 :- What is overriding ?
  Question 42 :- Explain overloading ?
  Question 43 :- Overloading vs Overriding ?

• C# Interview Questions & Answers - Part 4.
  Question 44 :- What is polymorphism ?
  Question 45 :- Can polymorphism work with out inheritance ?
  Question 46 :- Explain static vs dynamic polymorphism ?
  Question 47 :- Explain operator overloading ?

• C# Interview Questions & Answers - Part 5.
  Question 48 :- Why do we need Abstract classes ?
  Question 49 :- Are Abstract methods virtual ?
  Question 50 :- Can we create a instance of Abstract classes ?
  Question 51 :- Is it compulsory to implement Abstract methods ?
  Question 52 :- Why simple base class replace Abstract class ?
  Question 53 :- Explain interfaces and why do we need it ?
  Question 54 :- Can we write logic in interface ?
  Question 55 :- Can we define methods as private in interface ?
  Question 56 :- If i want to change interface whats the best practice ?
  Question 57 :- Explain Multiple inheritance in Interface ?
  Question 58 :- Explain Interface Segregation principle ?
  Question 59 :- Can we create instance of interface ?
  Question 60 :- Can we do Multiple inheritance with Abstract classes ?

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