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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.

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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?

a.

Polymorphism

b.

Inheritance

c.

Templates

d.

All of the mentioned

Discuss
Answer: (b).Inheritance
Q82.
The number of levels of inheritance are?

a.

5

b.

4

c.

3

d.

2

Discuss
Answer: (b).4
Q83.
What does the following code signify? 
class a
 {
 
 
 
 }
 class b : a
 {
     variable declaration;
     method declaration;
 }

a.

Declaration of a base class

b.

Declaration of a sub class

c.

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

d.

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?

a.

Scope resolution operator(:)

b.

Class visibilty modifiers (public,private etc.)

c.

Dot operator (.)

d.

All of the mentioned

Discuss
Answer: (b).Class visibilty modifiers (public,private etc.)
Q85.
Select the class visibility modifiers among the following :

a.

Private, protected, public, internal

b.

Private, protected, public, internal, protected internal

c.

Private, protected, public

d.

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?

a.

static

b.

protected

c.

private

d.

shared

Discuss
Answer: (b).protected
Q87.
Wrong statement about inheritance in C# .NET?

a.

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

b.

Inheritance cannot extend base class functionality

c.

A derived class object contains all base class data

d.

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?

a.

public member

b.

private member

c.

protected member

d.

static member

Discuss
Answer: (d).static member
Q89.
Which of the following functionality is facilitated by inheritance mechanism?

a.

Use the existing functionality of base class

b.

Override the existing functionality of base class

c.

Implements new functionality in derived class

d.

All of the mentioned

Discuss
Answer: (d).All of the mentioned
Q90.
Which statements among following are correct?

a.

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

b.

Multiple inheritance is different from multiple levels of inheritance

c.

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

d.

All of the mentioned

Discuss
Answer: (d).All of the mentioned
Page 9 of 20

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