
Programación I - Conceptos Basicos II
Quiz
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Other
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University
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Practice Problem
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Hard
Raúl Gálvez
Used 2+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En Java, una clase puede heredar de múltiples clases utilizando la palabra clave extends.
class A {}
class B {}
class C extends A, B {}
Falso
Verdadero
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Una clase abstracta no puede ser instanciada directamente en Java.
abstract class Animal {}
Animal a = new Animal();
Falso
Verdadero
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El polimorfismo permite que un objeto de una subclase sea tratado como un objeto de su superclase.
class Animal {}
class Dog extends Animal {}
Animal myDog = new Dog();
Falso
Verdadero
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Una interface puede contener métodos con implementación.
interface Animal {
default void makeSound() {
System.out.println("Some sound");
}
}
Falso
Verdadero
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Los métodos privados de una clase pueden ser heredados por sus subclases.
Falso
Verdadero
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La encapsulación se logra mediante el uso de modificadores de acceso como private, protected y public.
Falso
Verdadero
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Una clase abstracta en Java puede tener métodos concretos (con implementación).
Falso
Verdadero
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