Questions are asked on C# in the interview
What is C#? This question is designed to test your basic knowledge of the language. You can answer by saying that C# is an object-oriented programming language developed by Microsoft that is used to create Windows applications, web applications, and games.
What is the difference between a class and an object in C#? This question is designed to test your understanding of object-oriented programming concepts. You can answer by saying that a class is a blueprint for creating objects, while an object is an instance of a class.
What is the difference between an abstract class and an interface in C#? This question is designed to test your understanding of advanced object-oriented programming concepts. You can answer by saying that an abstract class is a class that cannot be instantiated and is used as a base class for other classes, while an interface is a contract that defines a set of methods and properties that a class must implement.
What is the difference between a value type and a reference type in C#? This question is designed to test your understanding of C# data types. You can answer by saying that a value type stores its value directly in memory, while a reference type stores a reference to an object in memory.
What is the difference between a stack and a heap in C#? This question is designed to test your understanding of C# memory management. You can answer by saying that a stack is used to store value types and method calls, while a heap is used to store reference types and objects.
INTERMEDIATE LEVEL QUESTIONS
What is the difference between a struct and a class in C#? This question is designed to test your understanding of C# data types. You can answer by saying that a struct is a value type that is stored on the stack, while a class is a reference type that is stored on the heap.
What is the difference between a delegate and an event in C#? This question is designed to test your understanding of C# events and delegates. You can answer by saying that a delegate is a type that represents a method signature, while an event is a mechanism for notifying clients when something happens.
What is the difference between a private and a protected member in C#? This question is designed to test your understanding of C# access modifiers. You can answer by saying that a private member is accessible only within the class that defines it, while a protected member is accessible within the class that defines it and any derived classes.
What is the difference between a static class and a non-static class in C#? This question is designed to test your understanding of C# classes. You can answer by saying that a static class cannot be instantiated and contains only static members, while a non-static class can be instantiated and contains both static and non-static members.
What is the difference between an abstract class and a sealed class in C#? This question is designed to test your understanding of C# classes. You can answer by saying that an abstract class cannot be instantiated and is used as a base class for other classes, while a sealed class cannot be inherited from.
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