oops bootcamp

Which OOP concept allows multiple methods with the same name but different parameters?

• Method overriding

• Method overloading

• Encapsulation

• Inheritance

What is the key benefit of polymorphism?

• Code reusability

• Single interface for different behaviors

• Faster execution

• Reduced memory usage

What is the process of hiding internal details and showing only functionality called?

• Abstraction
  
  

•  Encapsulation

• Polymorphism

•  Inheritance

Which concept allows a class to derive properties from another class?

• Encapsulation

•  Polymorphism

• Inheritance

•  Abstraction

What is the relationship between a superclass and a subclass?

• "Has-a" relationship

• "Is-a" relationship

• "Uses-a" relationship

• "Implements-a" relationship

Which design pattern decouples an abstraction from its implementation?

• Adapter

• Bridge

• Proxy

• Decorator

Why can’t a constructor be abstract?

• Constructors are inherently static

• Constructors are meant to initialize objects, but abstract classes can’t be instantiated

• It violates encapsulation

• It’s a syntax restriction with no logical reason

 In method overriding, can the return type be covariant?

• No, return types must match exactly

• Yes, the subclass can return a more specific type

• Only if the method is static

• Only in interfaces

How does template method pattern leverage abstraction?

• By hiding all methods

• By defining a skeleton algorithm with abstract steps for subclasses to implement

• By replacing inheritance with composition

• By enforcing static methods

What is the primary use of an abstract factory pattern?

• To create a single instance of a class

• To create families of related objects without specifying concrete classes

• To override methods dynamically

• To enforce singleton behavior