
examen del modulo 1
Authored by Carla Miranda
Computers
University
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21 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. ¿Qué significa ECMA en el contexto de JavaScript?
A. European Code and Markup Association
B. European Computer Manufacturers Association
C. Electronic Code Management Architecture
D. ECMAScript Control Management API
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2. ¿Cuál es la principal diferencia entre let y var respecto al scope?
A. let es global y var es local
B. let tiene block scope y var function scope
C. var solo funciona dentro de clases
D. let puede redeclararse, var no
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Qué imprimirá este código?
console.log(x);
let x = 5;
5
undefined
null
error
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5. ¿Qué método del DOM se usa para seleccionar un elemento por su ID?
querySelectorAll()
getElementsByClassName()
getElementById()
getElementsByTagName()
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
. ¿Cuál es el resultado?
const persona = { nombre: 'Ana', edad: 30 };
const { nombre } = persona;
console.log(nombre);
undefined
Ana
nombre
Error
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
7. ¿Cuál de las siguientes opciones representa una Template Literal?
'Hola ' + nombre + '!'
"Hola " + nombre + "!"
. Hola ${nombre}!
Hola(nombre)
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál es la salida?
const mensaje = `Hola\nMundo`;
console.log(mensaje);
Hola Mundo
Hola\nMundo
hola
Mundo
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