Why you should use JavaScript, NodeJS & SQL Online Test?

The Prueba de JavaScript, NodeJS y SQL makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects: Comprender e implementar la sintaxis básica de JavaScript Uso de las funciones de JavaScript ES6 de manera efectiva Creación y manipulación de objetos utilizando conceptos de JavaScript Oops Trabajar con API para obtener y procesar datos Manejo de operaciones asincrónicas en node.js utilizando promesas Comprender y utilizar el sistema de módulos Node.js Comprender el ciclo de vida de solicitud-respuesta en node.js Realizar operaciones CRUD en SQL usando JavaScript Utilización de SQL uniones e índices de manera efectiva Aplicación de conceptos de programación de JavaScript para resolver problemas

JavaScript, NodeJS & SQL Online Test

Q: What topics are covered in the JavaScript, NodeJS & SQL Online Test?

Conceptos básicos de JavaScript JS ES6 JS oops API de manejo Nodo asincrónico.js y promesas Sistema de módulo node.js Solicitar el ciclo de vida de respuesta Operaciones SQL CRUD SQL se une e índices Programación JavaScript

About the test:

La prueba JavaScript, NodeJS y SQL utiliza MCQ basados en escenarios para evaluar a los candidatos sobre su competencia en el lenguaje de programación de JavaScript, el entorno de tiempo de ejecución de NodeJS y la base de datos SQL. La prueba evalúa la comprensión de los candidatos de temas como la programación impulsada por eventos, la programación asíncrona, el middleware, las conexiones de la base de datos, las consultas SQL y los principios de diseño de bases de datos. Los candidatos se evalúan sobre su capacidad para usar JavaScript y NodeJS para desarrollar aplicaciones del lado del servidor, interactuar con bases de datos, diseñar esquemas de bases de datos y escribir consultas SQL optimizadas y seguras para la manipulación y recuperación de datos.

Covered skills:

Conceptos básicos de JavaScript
JS oops
Nodo asincrónico.js y promesas
Solicitar el ciclo de vida de respuesta
SQL se une e índices

JS ES6
API de manejo
Sistema de módulo node.js
Operaciones SQL CRUD
Programación JavaScript

Try practice test

Start 14-day free trial

9 reasons why

Adaface JavaScript, NodeJS & SQL Test is the most accurate way to shortlist Desarrollador de pila completas

Reason #1

Tests for on-the-job skills

The JavaScript, NodeJS & SQL Online Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

Competente en conceptos básicos de JavaScript
Fuerte comprensión de los conceptos JS ES6
Capacidad para aplicar los principios de JavaScript Oops
Experiencia en el manejo de API en JavaScript
Familiaridad con la programación asincrónica en node.js y promesas
Conocimiento profundo del sistema de módulos Node.js
Comprensión del ciclo de vida de respuesta de solicitud en node.js
Competencia en operaciones SQL CRUD
Habilidad en SQL se une e índices
Fuertes habilidades de programación de JavaScript
Error efectivo y manejo de excepciones
Experiencia con el control de la versión Git

Reason #2

No trick questions

Traditional assessment tools use trick questions and puzzles for the screening, which creates a lot of frustration among candidates about having to go through irrelevant screening assessments.

View sample questions

The main reason we started Adaface is that traditional pre-employment assessment platforms are not a fair way for companies to evaluate candidates. At Adaface, our mission is to help companies find great candidates by assessing on-the-job skills required for a role.

Why we started Adaface

Try practice test

Start 14-day free trial

Reason #3

Non-googleable questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

How we design questions

Estas son solo una pequeña muestra de nuestra biblioteca de más de 10,000 preguntas. Las preguntas reales sobre esto Prueba de JavaScript, NodeJS y SQL no se puede obtener.

🧐 Question
Medium Async Await Promises Promises Async-Await	Try practice test
What will the following code output? A: 24 after 5 seconds and after another 5 seconds, another 24 B: 24 followed by another 24 immediately C: 24 immediately and another 24 after 5 seconds D: After 5 seconds, 24 and 24 E: Undefined F: NaN G: None of these
Medium Bitcoin prices Axios Promises	Try practice test
Review the following JavaScript code and pick the correct options: Assume that the API returns a successful 200 response code and a JSON object as the response body. What would the value of ‘a’ be after the code is executed?
Medium My Module Scope	Try practice test
What will the output of the following JavaScript code be?
Medium Promise Resolve Promises Async-Await	Try practice test
What does the following code output?
Easy Throw, Try, Async Promises Async-Await	Try practice test
What does the following JS code output?
Medium I/O cycle and main module Event Loop	Try practice test
Review the following NodeJS code: Pick the correct statements: A: X will be logged after Y always B: Y will be logged after X always C: The order of executing timeout and immediate callbacks is non-deterministic and is bound by the performance of the process D: In this case, the function calls are scheduled in the main module and not in the I/O cycle E: In this case, the function calls are scheduled in the I/O cycle so setImmediate is always executed before any timers scheduled in the I/O phase, independently of how many timers are left
Easy Res methods	Try practice test
If none of the methods (res.download, res.end, res.json, res.jsonp, res.redirect, res.render, res.send, res.sendFile, res.sendStatus) are called from a route handler to terminate request response cycle, what happens to the the client request? A) Will be left hanging indefinitely B) Will get an internal server error - 500 C) Will get a service unavailable error - 503 D) Will be left hanging for a while and then request timeout error - 408
Medium Phases and Timers Event Loop	Try practice test
Review the following NodeJS code: Pick the correct statements: A: Adaface will be logged after Lovelace. B: Lovelace will be logged after Adaface. C: Once the asyncOpThatTakes195ms completes reading the file, it starts executing the callback which takes 10 seconds. Only after this is finished, the event loop will execute the timers that are finished. So the timeout call back will actually be executed after 205 ms even though it is scheduled to be run after 200 ms D: Once the asyncOpThatTakes195ms completes reading the file, it starts executing the callback. While executing the callback, the scheduled timer becomes ready to be executed. So the runtime executes the timer and then completes processing the callback.
Medium Multi Select JOIN GROUP BY	Try practice test
Consider the following SQL table: How many rows does the following SQL query return?
Medium nth highest sales Nested queries User Defined Functions	Try practice test
Consider the following SQL table: Which of the following SQL commands will find the ‘nth highest Sales’ if it exists (returns null otherwise)?
Medium Select & IN Nested queries	Try practice test
Consider the following SQL table: Which of the following SQL queries would return the year when neither a football or cricket winner was chosen?
Medium Sorting Ubers Nested queries Join Comparison operators	Try practice test
Consider the following SQL table: What will be the first two tuples resulting from the following SQL command?
Hard With, AVG & SUM MAX() MIN() Aggregate functions	Try practice test
Consider the following SQL table: How many tuples does the following query return?
Easy Registration Queue Logic Queues	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
Medium Visitors Count Strings Logic	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

	🧐 Question	🔧 Skill
	Medium Async Await Promises Promises Async-Await	2 mins JavaScript	Try practice test
What will the following code output? A: 24 after 5 seconds and after another 5 seconds, another 24 B: 24 followed by another 24 immediately C: 24 immediately and another 24 after 5 seconds D: After 5 seconds, 24 and 24 E: Undefined F: NaN G: None of these
	Medium Bitcoin prices Axios Promises	2 mins JavaScript	Try practice test
Review the following JavaScript code and pick the correct options: Assume that the API returns a successful 200 response code and a JSON object as the response body. What would the value of ‘a’ be after the code is executed?
	Medium My Module Scope	2 mins JavaScript	Try practice test
What will the output of the following JavaScript code be?
	Medium Promise Resolve Promises Async-Await	2 mins JavaScript	Try practice test
What does the following code output?
	Easy Throw, Try, Async Promises Async-Await	2 mins JavaScript	Try practice test
What does the following JS code output?
	Medium I/O cycle and main module Event Loop	2 mins NodeJS	Try practice test
Review the following NodeJS code: Pick the correct statements: A: X will be logged after Y always B: Y will be logged after X always C: The order of executing timeout and immediate callbacks is non-deterministic and is bound by the performance of the process D: In this case, the function calls are scheduled in the main module and not in the I/O cycle E: In this case, the function calls are scheduled in the I/O cycle so setImmediate is always executed before any timers scheduled in the I/O phase, independently of how many timers are left
	Easy Res methods	3 mins NodeJS	Try practice test
If none of the methods (res.download, res.end, res.json, res.jsonp, res.redirect, res.render, res.send, res.sendFile, res.sendStatus) are called from a route handler to terminate request response cycle, what happens to the the client request? A) Will be left hanging indefinitely B) Will get an internal server error - 500 C) Will get a service unavailable error - 503 D) Will be left hanging for a while and then request timeout error - 408
	Medium Phases and Timers Event Loop	2 mins NodeJS	Try practice test
Review the following NodeJS code: Pick the correct statements: A: Adaface will be logged after Lovelace. B: Lovelace will be logged after Adaface. C: Once the asyncOpThatTakes195ms completes reading the file, it starts executing the callback which takes 10 seconds. Only after this is finished, the event loop will execute the timers that are finished. So the timeout call back will actually be executed after 205 ms even though it is scheduled to be run after 200 ms D: Once the asyncOpThatTakes195ms completes reading the file, it starts executing the callback. While executing the callback, the scheduled timer becomes ready to be executed. So the runtime executes the timer and then completes processing the callback.
	Medium Multi Select JOIN GROUP BY	2 mins SQL	Try practice test
Consider the following SQL table: How many rows does the following SQL query return?
	Medium nth highest sales Nested queries User Defined Functions	3 mins SQL	Try practice test
Consider the following SQL table: Which of the following SQL commands will find the ‘nth highest Sales’ if it exists (returns null otherwise)?
	Medium Select & IN Nested queries	3 mins SQL	Try practice test
Consider the following SQL table: Which of the following SQL queries would return the year when neither a football or cricket winner was chosen?
	Medium Sorting Ubers Nested queries Join Comparison operators	3 mins SQL	Try practice test
Consider the following SQL table: What will be the first two tuples resulting from the following SQL command?
	Hard With, AVG & SUM MAX() MIN() Aggregate functions	2 mins SQL	Try practice test
Consider the following SQL table: How many tuples does the following query return?
	Easy Registration Queue Logic Queues	30 mins Coding	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
	Medium Visitors Count Strings Logic	30 mins Coding	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

	🧐 Question	🔧 Skill	💪 Difficulty	⌛ Time
	Async Await Promises Promises Async-Await	JavaScript	Medium	2 mins	Try practice test
What will the following code output? A: 24 after 5 seconds and after another 5 seconds, another 24 B: 24 followed by another 24 immediately C: 24 immediately and another 24 after 5 seconds D: After 5 seconds, 24 and 24 E: Undefined F: NaN G: None of these
	Bitcoin prices Axios Promises	JavaScript	Medium	2 mins	Try practice test
Review the following JavaScript code and pick the correct options: Assume that the API returns a successful 200 response code and a JSON object as the response body. What would the value of ‘a’ be after the code is executed?
	My Module Scope	JavaScript	Medium	2 mins	Try practice test
What will the output of the following JavaScript code be?
	Promise Resolve Promises Async-Await	JavaScript	Medium	2 mins	Try practice test
What does the following code output?
	Throw, Try, Async Promises Async-Await	JavaScript	Easy	2 mins	Try practice test
What does the following JS code output?
	I/O cycle and main module Event Loop	NodeJS	Medium	2 mins	Try practice test
Review the following NodeJS code: Pick the correct statements: A: X will be logged after Y always B: Y will be logged after X always C: The order of executing timeout and immediate callbacks is non-deterministic and is bound by the performance of the process D: In this case, the function calls are scheduled in the main module and not in the I/O cycle E: In this case, the function calls are scheduled in the I/O cycle so setImmediate is always executed before any timers scheduled in the I/O phase, independently of how many timers are left
	Res methods	NodeJS	Easy	3 mins	Try practice test
If none of the methods (res.download, res.end, res.json, res.jsonp, res.redirect, res.render, res.send, res.sendFile, res.sendStatus) are called from a route handler to terminate request response cycle, what happens to the the client request? A) Will be left hanging indefinitely B) Will get an internal server error - 500 C) Will get a service unavailable error - 503 D) Will be left hanging for a while and then request timeout error - 408
	Phases and Timers Event Loop	NodeJS	Medium	2 mins	Try practice test
Review the following NodeJS code: Pick the correct statements: A: Adaface will be logged after Lovelace. B: Lovelace will be logged after Adaface. C: Once the asyncOpThatTakes195ms completes reading the file, it starts executing the callback which takes 10 seconds. Only after this is finished, the event loop will execute the timers that are finished. So the timeout call back will actually be executed after 205 ms even though it is scheduled to be run after 200 ms D: Once the asyncOpThatTakes195ms completes reading the file, it starts executing the callback. While executing the callback, the scheduled timer becomes ready to be executed. So the runtime executes the timer and then completes processing the callback.
	Multi Select JOIN GROUP BY	SQL	Medium	2 mins	Try practice test
Consider the following SQL table: How many rows does the following SQL query return?
	nth highest sales Nested queries User Defined Functions	SQL	Medium	3 mins	Try practice test
Consider the following SQL table: Which of the following SQL commands will find the ‘nth highest Sales’ if it exists (returns null otherwise)?
	Select & IN Nested queries	SQL	Medium	3 mins	Try practice test
Consider the following SQL table: Which of the following SQL queries would return the year when neither a football or cricket winner was chosen?
	Sorting Ubers Nested queries Join Comparison operators	SQL	Medium	3 mins	Try practice test
Consider the following SQL table: What will be the first two tuples resulting from the following SQL command?
	With, AVG & SUM MAX() MIN() Aggregate functions	SQL	Hard	2 mins	Try practice test
Consider the following SQL table: How many tuples does the following query return?
	Registration Queue Logic Queues	Coding	Easy	30 mins	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
	Visitors Count Strings Logic	Coding	Medium	30 mins	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

Reason #4

1200+ customers in 75 countries

Con Adaface, pudimos optimizar nuestro proceso de selección inicial en más de un 75 %, liberando un tiempo precioso tanto para los gerentes de contratación como para nuestro equipo de adquisición de talentos.

Brandon Lee, jefe de personas, Love, Bonito

Try practice test

Start 14-day free trial

Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment Prueba de JavaScript, NodeJS y SQL in your hiring process is that it is an elimination tool, not a selection tool. In other words: you want to use the test to eliminate the candidates who do poorly on the test, not to select the candidates who come out at the top. While they are super valuable, pre-employment tests do not paint the entire picture of a candidate’s abilities, knowledge, and motivations. Multiple easy questions are more predictive of a candidate's ability than fewer hard questions. Harder questions are often "trick" based questions, which do not provide any meaningful signal about the candidate's skillset.

Science behind Adaface tests

Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the Prueba de JavaScript, NodeJS y SQL from your dashboard by entering their email address.

Public link: You can create a public link for each test that you can share with candidates.

API or integrations: You can invite candidates directly from your ATS by using our pre-built integrations with popular ATS systems or building a custom integration with your in-house ATS.

Reason #7

Detailed scorecards & benchmarks

Ver cuadro de mando de muestra

Try practice test

Start 14-day free trial

Reason #8

High completion rate

Adaface tests are conversational, low-stress, and take just 25-40 mins to complete.

This is why Adaface has the highest test-completion rate (86%), which is more than 2x better than traditional assessments.

Reason #9

Advanced Proctoring

Learn more

Preview this test

Ver cuadro de mando de muestra

About the JavaScript, NodeJS & SQL Assessment Test

Why you should use Pre-employment JavaScript, NodeJS & SQL Online Test?

The Prueba de JavaScript, NodeJS y SQL makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects:

Comprender e implementar la sintaxis básica de JavaScript
Uso de las funciones de JavaScript ES6 de manera efectiva
Creación y manipulación de objetos utilizando conceptos de JavaScript Oops
Trabajar con API para obtener y procesar datos
Manejo de operaciones asincrónicas en node.js utilizando promesas
Comprender y utilizar el sistema de módulos Node.js
Comprender el ciclo de vida de solicitud-respuesta en node.js
Realizar operaciones CRUD en SQL usando JavaScript
Utilización de SQL uniones e índices de manera efectiva
Aplicación de conceptos de programación de JavaScript para resolver problemas

Once the test is sent to a candidate, the candidate receives a link in email to take the test. For each candidate, you will receive a detailed report with skills breakdown and benchmarks to shortlist the top candidates from your pool.

What topics are covered in the JavaScript, NodeJS & SQL Online Test?

JavaScript Basics
JavaScript Basics cubre los conceptos fundamentales y la sintaxis del lenguaje de programación de JavaScript, incluidas variables, tipos de datos, operadores, estructuras de control y funciones. Esta habilidad se mide en la prueba para evaluar la comprensión del candidato de los principios centrales de JavaScript y su capacidad para escribir código JavaScript básico.
JS ES6
JS ES6 se centra en las nuevas características y mejoras introducidas en Ecmascript 6, la última versión de JavaScript. Incluye conceptos como funciones de flecha, literales de plantilla, destructación, clases, módulos y promesas. Esta habilidad se mide en la prueba para evaluar la familiaridad del candidato con las características modernas del lenguaje de JavaScript y su capacidad para escribir código eficiente y mantenible.
JS OOPS
JS OOPS (Programación orientada a objetos ) implica organizar el código en objetos reutilizables y usar herencia, encapsulación y polimorfismo. Permite una mejor organización del código, modularidad y reutilización. Esta habilidad se mide en la prueba para evaluar la competencia del candidato en la redacción del código JavaScript orientado a objetos y su comprensión de los principios de OOP.
API de manejo
Las API de manejo implican recuperar datos de la Web externa API e integrarlo en aplicaciones JavaScript. Requiere conocimiento de las solicitudes HTTP, el análisis de JSON y el manejo de operaciones asíncronas. Esta habilidad se mide en la prueba para evaluar la capacidad del candidato para trabajar con API web y consumir datos externos en aplicaciones de JavaScript.
node.js y promesas asíncronas y promesas
Node.js asíncrono y Promesas Se centran en la naturaleza asincrónica de Node.js y el uso de promesas para manejar operaciones asíncronas. Incluye conceptos como devoluciones de llamada, programación basada en eventos, async/esperanza y manejo de errores. Esta habilidad se mide en la prueba para evaluar la comprensión del candidato de la programación asincrónica en Node.js y su capacidad para escribir código asincrónico eficiente y escalable.
node.js System
Node El sistema del módulo .JS cubre la organización y los módulos reutilizables en las aplicaciones Node.js. Incluye conceptos tales como importación y exportación de módulos, utilizando módulos centrales, creación de módulos personalizados y resolución del módulo. Esta habilidad se mide en la prueba para evaluar la familiaridad del candidato con el sistema de módulos en Node.js y su capacidad para crear y usar módulos de manera efectiva en proyectos Node.js.
Solicitar el ciclo de vida de respuesta </h4> << P> Solicitar el ciclo de vida de respuesta implica comprender cómo funciona la comunicación cliente-servidor en el contexto de las aplicaciones web. Incluye conceptos como métodos HTTP, encabezados de solicitud, manejo de rutas, middleware y manejo de respuesta. Esta habilidad se mide en la prueba para evaluar la comprensión del candidato del flujo de solicitud-respuesta en aplicaciones web y su capacidad para manejar las solicitudes y respuestas HTTP de manera efectiva. </p> <h4> Operaciones SQL CRUD
SQL Las operaciones de CRUD se refieren a las operaciones Crear, Leer, actualizar y eliminar las operaciones realizadas en la base de datos utilizando el lenguaje de consulta estructurada (SQL). Incluye conceptos como insertar datos, consultar datos, actualizar datos y eliminar datos de bases de datos relacionales. Esta habilidad se mide en la prueba para evaluar la competencia del candidato en SQL y su capacidad para realizar operaciones básicas de bases de datos utilizando SQL.
SQL se une e índices
SQL Se une e índices implica trabajar con el trabajo bases de datos relacionales y comprensión de cómo unir tablas y optimizar el rendimiento de la base de datos utilizando índices. Incluye conceptos como unión interna, unión exterior, unión cruzada, claves primarias, claves extranjeras y creación de índices. Esta habilidad se mide en la prueba para evaluar la capacidad del candidato para escribir consultas complejas que involucran juntas y su conocimiento de optimizar consultas de bases de datos utilizando índices.
programación de programación JavaScript
JavaScript cubre la capacidad general de la capacidad de los candidatos para escribir código JavaScript limpio, eficiente y bien estructurado. Evalúa su conocimiento de las mejores prácticas, convenciones de codificación, manejo de errores, rendimiento del código y habilidades de solución de problemas. Esta habilidad se mide en la prueba para evaluar la competencia general del candidato en la programación de JavaScript y su capacidad para resolver problemas de programación utilizando JavaScript.
Full list of covered topics
The actual topics of the questions in the final test will depend on your job description and requirements. However, here's a list of topics you can expect the questions for Prueba de JavaScript, NodeJS y SQL to be based on.
Tipos de datos
Operadores
Funciones
Matrices
Objetos
Instrumentos de cuerda
Condicional
Bucles
Cierre
Prototipos
Funciones de flecha
Destructor
Operador de descanso/propagación
Promesas
Asíncrono/espera
Módulos
Programación impulsada por eventos
Buffers y corrientes
Sistema de archivos
Módulo HTTP
Marco expreso
Error Manejo de middleware
Enrutamiento
Operaciones crud con SQL
Lenguaje de manipulación de datos
Lenguaje de definición de datos
Actas
Índices
Uniones
Normalización
Funciones agregadas
Unir internamente
Se unió a la izquierda
Juego correcto
Unión externa completa
Devoluciones de llamada
Manejo de errores
Manejo de excepciones
Depuración
Pruebas
Expresiones regulares
Gestión de la memoria
Variables
Escopas
Devoluciones de llamada
Manejo de eventos
Herencia basada en prototipos
Propagación de errores
Programación asincrónica
Flujo de datos unidireccional
Datos inmutables
El enlace de datos
Inyección de dependencia
Operaciones de API Crud
Promesa de encadenamiento
Manejo de errores con promesas
Eslint
Scripts de NPM
Comandos GIT
Solicitud de solicitud

Try practice test

Start 14-day free trial

What roles can I use the JavaScript, NodeJS & SQL Online Test for?

Desarrollador de pila completa
Desarrollador de JavaScript
Desarrollador de node.js
Desarrollador de SQL

How is the JavaScript, NodeJS & SQL Online Test customized for senior candidates?

For intermediate/ experienced candidates, we customize the assessment questions to include advanced topics and increase the difficulty level of the questions. This might include adding questions on topics like

Implementación de estructuras de datos de JavaScript y algoritmos
Optimización del código JavaScript para el rendimiento
Creación y mantenimiento de APIs RESTful en Node.js
Implementación de autenticación y autorización en aplicaciones Node.js
Comprender y trabajar con bases de datos NoSQL en Node.js
Uso de marcos y bibliotecas de JavaScript (por ejemplo, Express, React) para desarrollar aplicaciones web
Implementación de desarrollo basado en pruebas (TDD) y escritura de pruebas unitarias para el código JavaScript
Depuración y solución de problemas de aplicaciones JavaScript
Utilización de mecanismos de almacenamiento en caché y optimización de consultas de bases de datos en node.js
Implementación de la representación del lado del servidor (SSR) usando Node.js Frameworks

The coding question for experienced candidates will be of a higher difficulty level to evaluate more hands-on experience.

Preview this test

Ver cuadro de mando de muestra

Los gerentes de contratación sintieron que a través de las preguntas técnicas que hicieron durante las entrevistas del panel, pudieron decir qué candidatos tenían mejores puntajes y diferenciarse de aquellos que no obtuvieron tan buenos puntajes. Ellos son altamente satisfecho con la calidad de los candidatos preseleccionados con la selección de Adaface.

85%

Reducción en el tiempo de detección

Ver estudio de caso completo

JavaScript, NodeJS & SQL Hiring Test Preguntas frecuentes

¿Puedo combinar múltiples habilidades en una evaluación personalizada?

Si, absolutamente. Las evaluaciones personalizadas se configuran en función de la descripción de su trabajo e incluirán preguntas sobre todas las habilidades imprescindibles que especifique.

¿Tiene alguna característica anti-trato o procuración en su lugar?

Tenemos las siguientes características anti-trate en su lugar:

Preguntas no postradas
Procuración de IP
Procedor web
Procedores de cámara web
Detección de plagio
navegador seguro

Lea más sobre las funciones de procuración.

¿Cómo interpreto los puntajes de las pruebas?

Lo principal a tener en cuenta es que una evaluación es una herramienta de eliminación, no una herramienta de selección. Una evaluación de habilidades está optimizada para ayudarlo a eliminar a los candidatos que no están técnicamente calificados para el rol, no está optimizado para ayudarlo a encontrar el mejor candidato para el papel. Por lo tanto, la forma ideal de usar una evaluación es decidir un puntaje umbral (generalmente del 55%, lo ayudamos a comparar) e invitar a todos los candidatos que obtienen un puntaje por encima del umbral para las próximas rondas de la entrevista.

¿Para qué nivel de experiencia puedo usar esta prueba?

Cada evaluación de AdaFace está personalizada para su descripción de trabajo/ persona candidata ideal (nuestros expertos en la materia elegirán las preguntas correctas para su evaluación de nuestra biblioteca de más de 10000 preguntas). Esta evaluación se puede personalizar para cualquier nivel de experiencia.

¿Cada candidato tiene las mismas preguntas?

Sí, te hace mucho más fácil comparar los candidatos. Las opciones para las preguntas de MCQ y el orden de las preguntas son aleatorizados. Tenemos características anti-trato/procuración en su lugar. En nuestro plan empresarial, también tenemos la opción de crear múltiples versiones de la misma evaluación con cuestiones de niveles de dificultad similares.