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Frequently asked .Net Interview Questions and Answers on Object Oriented Programming (OOPS) .NET Interview Questions and answers on OOPS.Here is List of questions.Frequently Asked Questions with answers.
- What is Abstract method?
- What is Polymorphisms?
- What is Virtual method?
- Can Struct be inherited?
- What is Object?
- What is Class?
- What is Static field?
- What is Static Method?
- What is Inheritance?
- What is Virtual keyword?
- What is New modifiers?
- What is Abstract Class?
- What is Sealed modifiers?
- What is an Interface?
- When to use Interface over abstract class?
- What is pure virtual function?
- Can we specify the access modifier for explicitly implemented interface method?
- What is Protected access modifier in C#?
- What is Public access modifier in C#?
- What is Private access modifier in C#?
- What is Internal access modifier in C#?
- What is Protected Internal access modifier in C#?
- What is method overloading?
- What is Overriding?
- What is Method overloading?
- What is Method Overriding? How to override a function in C#?
- Can we call a base class method without creating instance?
- In which cases you use override and new base?
- Difference between new and override keyword?
- What is a private constructor? Where will you use it?
- Can we declare private class in a Namespace?
- What is Polymorphism?
- What Are Attributes in DotNet?
- What can you do to make class available for inheritance but you need to prevent it's method to come in inheritance chain?
- What's the Difference between Interface and Abstract Class
- What are the various types of Constructors
- What are Constructors ?
- When to Use Abstract Classes and When Interfaces.
- Diversities between an abstract method & virtual method ?
- What is Early binding and late binding?
- How's method overriding different from overloading?
- What does the keyword virtual mean in the method definition?
- Can you declare the override method static while the original method is non-static?
- Can you override private virtual methods?
- Can you prevent your class from being inherited and becoming a base class for some other classes?
- Can you allow class to be inherited, but prevent the method from being over-ridden?
- Why can't you specify the accessibility modifier for methods inside the interface?
- Static datamembers should be initialized inside the constructor. True or False.
- Static methods can not use non static members. True or False.
- A constructor can be private. True or False?
- What is the work of a constructor?
- Name the operators that cannot be overloaded.
- What is "this" pointer?
- Difference between sealed and static classes.
- Differences between a structure and class.
- What are the different ways a method can be overloaded?
- Difference between a Class and an object.
- Define OOPS. What are its benefits?
- Can we have Sealed Method in abstarct class ?
- Can we have an Abstract class without having any abstract method ??
- Can we have Multiple Main Methods in one .cs file
- If the Function has same parameter but different return type (int and float), Is it a overloading?
- How does Composition mechanism works ?
- What is the advantage of parametric polymorphism ?
- What is difference in between abstrct classes and interfaces ?
- Overloading is Static Polymorphism and Overriding is Dynamic Polymorphism ? True or False ?
- What is the default access modifier of a class?
- Can a constructors that is declared within a base class, inherited by subclasses ? Yes or No
