Exploring OOP: Polymorphism and Abstraction

Exploring OOP: Polymorphism and Abstraction

University

15 Qs

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Exploring OOP: Polymorphism and Abstraction

Exploring OOP: Polymorphism and Abstraction

Assessment

Quiz

Computers

University

Medium

Created by

mario santos

Used 1+ times

FREE Resource

15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary purpose of method overriding in C++?

To allow a class to have multiple methods with the same name but different parameters.

To provide a specific implementation of a method that is already defined in its base class.

To hide the implementation details of a method.

To create a new class from an existing class.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is true about abstract classes in C++?

An abstract class cannot have any member variables.

An abstract class can be instantiated directly.

An abstract class must have at least one pure virtual function.

An abstract class cannot have any constructors.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a virtual function in C++?

A function that is defined in a derived class but not in the base class.

A function that is declared within a base class and is meant to be overridden in derived classes.

A function that cannot be overridden in derived classes.

A function that is only used for input/output operations.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you declare a pure virtual function in C++?

By using the keyword `virtual` followed by `= 0`.

By using the keyword `abstract` before the function name.

By using the keyword `override` after the function name.

By using the keyword `final` after the function name.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following statements is true about polymorphism in C++?

Polymorphism allows objects to be treated as instances of their own class only.

Polymorphism is achieved through method overloading only.

Polymorphism allows objects to be treated as instances of their base class.

Polymorphism is not supported in C++.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What is the output of the following code snippet?

Base

Derived

Compilation error

Runtime error

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT a characteristic of an abstract class in C++?

It can have non-virtual functions.

It can have member variables.

It can be instantiated.

It can have constructors.

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