C#.Net interview questions Part1

C#.Net interview questions and Answers

1) Basic OOP Concepts (OOP, Object, Class)
   a) What is OOP ?
   b) What is Object ?
   c) What is Class ?

2) What are properties of object oriented programming ? Or
    What are 4 main Pillars / Components /Concepts of object oriented programming ?

    a) What is Abstraction?

    b) What is encapsulation? Abstraction Vs Encapsulation ?

    c) What is Polymorphism? Types of Polymorphism ? Static Vs Dynamic Polymorphism ?
       Static Polymorphism ( Funcation Overloading.)    
       Dynamic Polymorphism ( Funcation Overriding.)

    d) What is Inheritance? What are the types of Inheritance?
       Implementation Inheritance
       Interface Inheritance

3) Interview questions related to Inheritance in C#.Net
    a) What is Inheritance Hierarchy? 
    b) Do .Net supports multiple inheritance? 
    c) Why don’t we have multiple inheritance in .Net? 
    d) How do you prevent a class from inherited? 
    e) If we inherit the class does the private variables also inherited?

4)  Interview questions related to Abstract class and interface

   a) What are abstract classes in C#.Net ? 

   b) What is Interface in C#.Net ? 

   c) Abstract Class Vs Interface In C#.Net

   d) Advantage of abstract class over Interface ?

  
   e) Advantage of Interface over abstract class ?
    => A class can inherit multiple interfaces but can inherit only one class.

   f)  When to use abstract class and interface ? 

   g) What are Abstract properties ? 

   h) What is Explicit and default interface ? 

   i) Do Interface have accessibility modifier ? Ans: Yes
   j) Do Interface members have accessibility modifier ? Ans: No

   k) Examples on Interface.