Inheritance in OOP
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Questions and Answers

What is the primary purpose of inheritance in object-oriented programming?

  • To create a hierarchy of classes that share properties and methods (correct)
  • To prevent code reuse
  • To rewrite code from one class to another
  • To create a new class from scratch

What is the term for the class being inherited from?

  • Derived class
  • Base class
  • Parent class (correct)
  • Child class

What type of relationship does inheritance represent?

  • Is-a relationship (correct)
  • Uses-a relationship
  • Has-a relationship
  • Part-of relationship

What is a benefit of using inheritance in programming?

<p>It provides reusability of code (C)</p> Signup and view all the answers

What happens when a child class inherits from a parent class?

<p>The child class gains all the attributes and methods of the parent class (B)</p> Signup and view all the answers

What is the term for the class that inherits from another class?

<p>Derived class (A)</p> Signup and view all the answers

What will be the output of calling the Vehicle_info method on an object of the SportsCar class?

<p>Inside Vehicle class (B)</p> Signup and view all the answers

Which type of inheritance is depicted when a SportsCar class is derived from a single base class Car, which in turn is derived from another base class Vehicle?

<p>Multilevel inheritance (B)</p> Signup and view all the answers

What is Hybrid inheritance?

<p>Combination of more than one type of inheritance (D)</p> Signup and view all the answers

What does it mean when instance variables of the parent class are declared as private?

<p>They cannot be accessed outside the parent class (C)</p> Signup and view all the answers

What error will be encountered in the given code snippet?

<p>AttributeError because '__d' is a private variable (D)</p> Signup and view all the answers

What is method overriding in inheritance?

<p>Defining a method in the derived class with the same name and parameters as in the base class, but with different functionality (D)</p> Signup and view all the answers

Which type of inheritance allows for multiple derived classes from a single base class?

<p>Hierarchical inheritance (C)</p> Signup and view all the answers

How is a private instance variable defined in a Python class?

<p>Using two underscores before the variable name (C)</p> Signup and view all the answers

What does the super() function do in the context of the Student class?

<p>It initializes the parent class properties. (A)</p> Signup and view all the answers

Which of these correctly defines a new attribute specific to the Student class?

<p>self.graduationyear = 2019 in the <strong>init</strong> method (D)</p> Signup and view all the answers

How does the Student class inherit from the Person class?

<p>Using class Student(Person): (B)</p> Signup and view all the answers

What is single inheritance?

<p>When a child class inherits from only one parent class. (C)</p> Signup and view all the answers

Which method can be used to override the printname method in the Student class?

<p>def printname(self): (B)</p> Signup and view all the answers

If you want to add a method exclusive to the Student class, where should it be defined?

<p>Within the Student class (B)</p> Signup and view all the answers

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