
Evaluación Diagnóstica Java React Node
Authored by David Mendez
Professional Development
Professional Development
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60 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
¿Cuál es el resultado de console.log(5 + '5')?
10
"55"
55
Error
"10"
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
¿Cuál de las siguientes declaraciones tiene ámbito de bloque?
var
global
let
none
static
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
¿Qué hace la función setTimeout?
Ejecuta una función inmediatamente
Detiene el programa por un tiempo
Ejecuta una función después de cierto tiempo
Declara una espera sin bloqueo
Lanza una excepción
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
¿Cuál es el resultado de este código?
setTimeout(() => console.log("Hola"), 0);
console.log("Mundo");
"Hola" luego "Mundo"
"Hola Mundo"
"Mundo" luego "Hola"
"Mundo Hola"
Error
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
¿Qué método convierte un objeto en cadena JSON?
JSON.convert()
stringifyJSON()
JSON.stringify()
JSON.encode()
objectToJSON()
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
¿Cuál es el resultado de typeof null?
null
undefined
"object"
"null"
"undefined"
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
¿Qué operador se usa para evitar reasignación de valor?
const
let
var
define
Object.freeze()
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