Object Oriented Programming (OOP) Skill Assessment
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Object Oriented Programming (OOP) MCQ
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Free Sample Questions for Object Oriented Programming (OOP)
Which class has the highest degree of abstraction in a multilevel inheritance relationship of five levels?
The class at the third level
The class at the first level
All have the same degree of abstraction.
The class at the second level
Answer:
The class at the first level
What is the difference between an interface and an abstract class?
Interfaces can contain code or data. Abstract classes do not contain code or data. A class can inherit from more than one abstract class but can only implement one interface
Interfaces can contain code or data. Abstract classes do not contain code or data. A class can inherit from only one abstract class but can implement an unlimited number of interface
Abstract classes can contain code or data. Interface do not contain code or data. A class can inherit from only one abstract class but can implement an unlimited number of interfaces
Abstract classes can contain code or data. Interface do not contain code or data. A class can inherit from more than one abstract class but can only implement one interface
Answer:
Abstract classes can contain code or data. Interface do not contain code or data. A class can inherit from only one abstract class but can implement an unlimited number of interfaces
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