Welcome to the Interfaces,Inheritance and Polymorphism MCQs Page

Dive deep into the fascinating world of Interfaces,Inheritance and Polymorphism with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Interfaces,Inheritance and Polymorphism, a crucial aspect of C# programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Interfaces,Inheritance and Polymorphism, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within C# programming.

Check out the MCQs below to embark on an enriching journey through Interfaces,Inheritance and Polymorphism. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of C# programming.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Interfaces,Inheritance and Polymorphism. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Interfaces,Inheritance and Polymorphism MCQs | Page 9 of 20

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Q81.

Which procedure among the following should be used to implement a ‘Has a’ or a ‘Kind of’ relationship between two entities?

Polymorphism

Inheritance

Templates

All of the mentioned

Discuss

Answer: (b).Inheritance

Q82.

The number of levels of inheritance are?

Discuss

Answer: (b).4

Q83.

What does the following code signify?

class a
 {
 
 
 
 }
 class b : a
 {
     variable declaration;
     method declaration;
 }

Declaration of a base class

Declaration of a sub class

Declaration of base class & sub class and how subclass inherits the base class

None of the mentioned

Discuss

Answer: (c).Declaration of base class & sub class and how subclass inherits the base class

Q84.

In an inheritance chain through which of following, the base class and its components are accessible to the derived class?

Scope resolution operator(:)

Class visibilty modifiers (public,private etc.)

Dot operator (.)

All of the mentioned

Discuss

Answer: (b).Class visibilty modifiers (public,private etc.)

Q85.

Select the class visibility modifiers among the following :

Private, protected, public, internal

Private, protected, public, internal, protected internal

Private, protected, public

All of the mentioned

Discuss

Answer: (b).Private, protected, public, internal, protected internal

Q86.

In Inheritance concept, which of the following members of base class are accessible to derived class members?

static

protected

private

shared

Discuss

Answer: (b).protected

Q87.

Wrong statement about inheritance in C# .NET?

In inheritance chain, object construction begins from base class towards derived class

Inheritance cannot extend base class functionality

A derived class object contains all base class data

All of the mentioned

Discuss

Answer: (b).Inheritance cannot extend base class functionality

Q88.

A class member declared protected becomes member of subclass of which type?

public member

private member

protected member

static member

Discuss

Answer: (d).static member

Q89.

Which of the following functionality is facilitated by inheritance mechanism?

Use the existing functionality of base class

Override the existing functionality of base class

Implements new functionality in derived class

All of the mentioned

Discuss

Answer: (d).All of the mentioned

Q90.

Which statements among following are correct?

We can derive a class from a base class even if source code of base class not available

Multiple inheritance is different from multiple levels of inheritance

It is legal to make objects of one class as members of another class

All of the mentioned

Discuss

Answer: (d).All of the mentioned

Page 9 of 20

Welcome to the Interfaces,Inheritance and Polymorphism MCQs Page

Interfaces,Inheritance and Polymorphism MCQs | Page 9 of 20

Explore more Topics under C# programming

Basics of C# Programming

Data Types,Variables and Operators

Control Instructions

Classes and Objects

Arrays and Strings

Functions and Subroutines

Indexers and Exception Handling

Console IO and Stream Classes

Delegates and Generics

LINQ

Collection Classes and Mathematical Functions

Namespaces and Preprocessors

Miscellaneous Topics

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