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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 4 of 20

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Q31.
Which of the following unary operators can be overloaded?

1. true
2. false
3. +
4. new
5. is
Discuss
Answer: (a).1, 2, 3
Q32.
A derived class can stop virtual inheritance by declaring an override as
Discuss
Answer: (b).sealed
Q33.
Which of the following keyword is used to change the data and behavior of a base class by replacing a member of a base class with a new derived member?
Discuss
Answer: (a).new
Discuss
Answer: (a).When used as a modifier, the new keyword explicitly hides a member inherited from a base class.
Q35.
Which of the following keyword is used to overload user-defined types by defining static member functions?
Discuss
Answer: (c).operator
Discuss
Answer: (d).public static sample operator + ( sample a, sample b )
Discuss
Answer: (d).When overriding a method, the names and type signatures of the override method must be the same as the virtual method that is being overriden.
Q38.
Which of the following statements are correct?

1. All operators in C#.NET can be overloaded.
2. We can use the new modifier to modify a nested type if the nested type is hiding another type.
3. In case of operator overloading all parameters must be of the different type than the class or struct that declares the operator.
4. Method overloading is used to create several methods with the same name that performs similar tasks on similar data types.
5. Operator overloading permits the use of symbols to represent computations for a type.
Discuss
Answer: (c).2, 5
Discuss
Answer: (a).DerivedSample class hides the fun() method of base class.
Discuss
Answer: (a).The conditional logical operators cannot be overloaded.

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