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Q01. What is the use of Abstract Class and Interface in .Net? Q02. What is Abstract Class in .Net? Q03. What is Interface in .Net? Q04. What are the current fundamental rules of using Abstract Class in .Net? Q05. What are the things that are allowed in an Abstract Class? Q06. What are the things that are not allowed in an Abstract Class? Q07. What is the difference between the traditional Interface and the current .Net Core Interface? Q08. What are the new features allowed in the current .Net Core Interface?? Q09. What are the features that are not allowed in the .Net Core Interface? Q10. What are the similarities between Abstract Class and C# 8 Interface? Q11. What is the difference between Abstract Class and Interface? Q12. If both Abstract Classes and Interfaces are used for abstraction, what distinguishes them? Q13. What are the recent features introduced for the interface in .Net?

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Q01. What is Static Class? Q02. What are the core features of the Static Classes? Q03. What are the fundamental rules of the Static Classes? Q04. What is Singleton? Q05. What are the different types of Singleton? Q06. What are the different ways to implement a Singleton? Q07. What are the core components of a Singleton Class? Q08. What are the similarities between Static Class vs. Singleton? Q09. What is the difference between Singleton vs. Static Class?

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Q01. What is the order precedence of the constructor execution in C#? Q02. What is the constructor execution order in C#? Q03. What is the constructor execution sequence in the case of static constructors? Q04. What is the constructor execution order in the C# class? Q05. What is the constructor execution order in the C# structure? Q06. What is the constructor execution order in inheritance?

Q01. What is the order precedence of the constructor execution in C#? Q02. What is the constructor execution order in C#? Q03. What is the constructor execution sequence in the case of static constructors? Q04. What is the constructor execution order in the C# class? Q05. What is the constructor execution order in the C# structure? Q06. What is the constructor execution order in inheritance?

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Q141. What is the difference between Mutex and Monitor? Q142. What is Semaphore C#? How does the Semaphore work? Q143. What is deadlock? How can you prevent deadlock in C#? Q144. What do you mean by thread-safe? How can you share data between multiple threads? Q145. How can you retrieve data from a thread? What is a callback method? Q146. What is Annonumous Method in C#? Q147. What is Lambda Expression in C#? Q148. What is a thread? What is the thread life cycle or different states of a thread? Q149. What is the difference between task.wait(), task.delay(), and thread.sleep() in C#? Q150. What is string interpolation in C#?