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About the test:

The NodeJS Online Test uses scenario-based MCQ questions to evaluate a candidate's ability to use Express.js as web application framework, handle REST API in Node, structure the Node application in modules, use NPM packages, connect to SQL/ Mongo databases and deploy node apps to production. The test uses code-tracing MCQ questions and coding questions to evaluate hands-on JavaScript programming skills.

Covered skills:

  • Node.js Module System
  • Debugging Node.js
  • File System and Command Line Args
  • Asynchronous Node.js and promises
See all covered skills

9 reasons why
9 reasons why

Adaface Node.js Online Test is the most accurate way to shortlist Node JS Developers



Reason #1

Tests for on-the-job skills

O teste on -line do NodeJS/ JavaScript foi projetado e validado por especialistas do setor para ajudar os recrutadores de tecnologia e os gerentes de contratação a avaliar as habilidades de programação NodeJs e JavaScript do candidato. Os candidatos a telas de teste para os seguintes gerentes de contratação de Habilidades de Nó comuns procuram:

  • Javascript Fundamentals (ES6 e OOPS)
  • Programação assíncrona e promessas
  • Código de vida e código de vida de resposta à resposta e status
  • Construindo servidores da Web e servidores de API usando o Express JS
  • JSON Analisando e servindo
  • estrutura uma aplicação de nó em módulos
  • Compreensão do loop de eventos do nó e emissor de eventos
  • Compreensão de buffers, fluxos e tubos
  • Gerenciando pacotes de nós
  • Conectando -se ao banco de dados SQL ou Mongo no nó
  • Trabalhando com arquivos e servindo arquivos estáticos
  • rotas personalizadas
  • Uso eficiente de usuários médios comuns
  • Conhecimento de motores de modelo como guidão
  • Construir, testar e liberar aplicativos de nós
  • Erro e manuseio de exceção
  • Compreensão profunda do loop de eventos do nó

O teste também possui perguntas MCQ de rastreamento de código e perguntas de codificação para avaliar as habilidades práticas de programação JavaScript.

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.

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 ->
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.

These are just a small sample from our library of 10,000+ questions. The actual questions on this Node.js Online Test will be non-googleable.

🧐 Question

Medium

I/O cycle and main module
Event Loop
Solve
Review the following NodeJS code:
 image
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

Medium

Res methods
Solve
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
Solve
Review the following NodeJS code:
 image
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.

Easy

Registration Queue
Logic
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

Longest Road
logic
hashmaps
Solve
A startup company E-Motors is building driverless automated cars. The car contains a sensor that checks the road quality for the next N meters to decide the optimal speed at which the cars should move. We are given recorded data by the sensor in the form of an array, where each element of the array is the rating given to 1 meter of the road in sequence. 

The rating given by the sensor is from 1 to 100, where 100 represents the road with the best condition, and any rating above 60 is optimal. Find the longest stretch of road in meters that is categorized as optimal by the sensor.

The input is an array of "strings" which needs to be converted from string to integer/number inside the function.

Medium

Visitors Count
Strings
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

I/O cycle and main module
Event Loop
2 mins
NodeJS
Solve

Medium

Res methods
3 mins
NodeJS
Solve

Medium

Phases and Timers
Event Loop
2 mins
NodeJS
Solve

Easy

Registration Queue
Logic
30 mins
Coding
Solve

Medium

Longest Road
logic
hashmaps
25 mins
Coding
Solve

Medium

Visitors Count
Strings
30 mins
Coding
Solve
🧐 Question🔧 Skill💪 Difficulty⌛ Time
I/O cycle and main module
Event Loop
NodeJS
Medium2 mins
Solve
Res methods
NodeJS
Medium3 mins
Solve
Phases and Timers
Event Loop
NodeJS
Medium2 mins
Solve
Registration Queue
Logic
Coding
Easy30 minsSolve
Longest Road
logic
hashmaps
Coding
Medium25 minsSolve
Visitors Count
Strings
Coding
Medium30 minsSolve
Reason #4

1200+ customers in 75 countries

Brandon

With Adaface, we were able to optimise our initial screening process by upwards of 75%, freeing up precious time for both hiring managers and our talent acquisition team alike!


Brandon Lee, Head of People, Love, Bonito

Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment Node.js Online Test 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.

Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the Node.js Online Test 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 & comparative results

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


Como o teste é personalizado para desenvolvedores de nós seniores?

As perguntas para os desenvolvedores de nós seniores terão um nível de dificuldade mais alto e são baseados em tópicos avançados como:

  • Sessão e gerenciamento de cookies
  • Usando Webpack
  • Diferenças entre o ambiente de desenvolvimento e produção
  • Gerenciamento de dados na memória eficiente
  • Websockets no nó
  • Projetando um sistema de autenticação seguro no nó
  • Escrevendo Middlewares personalizados
  • Manuseio de erro personalizado
  • Processo de nó de escala (garfos)
  • Melhorando o desempenho do servidor com threads de trabalhador e agrupamento
  • Cache de solicitações de consulta para melhorar a velocidade
  • Testes de unidade e integração
  • Manipulando servidores de nó atrás de aplicativos proxy
  • Versão semântica e gerenciamento de dependência
  • scripts npm personalizados
  • Segurança da API (injeção de noSQL, proteção XSS, limitação de taxa)
  • Documentação e implantação da API
  • Implantação com PM2, Nginx, SSL
  • Usando o nginx como proxy reverso e balanceador de carga
  • manuseio de cors

Além disso, o MCQS e a pergunta de codificação para avaliar as habilidades de JavaScript serão de níveis de dificuldade mais altos.

What roles can I use the Node.js Online Test for?

  • Node JS Developer
  • Senior Node JS Developer
  • Backend Node Developer
  • Senior Backend Node.JS Developer
  • Express.js Developer

What topics are covered in the Node.js Online Test?

Fundamentos JavaScript
Nodejs Under-the-Hood
Fundamentos ExpressJs
Solicitar resposta
Métodos de roteamento e controlador
Lidar com solicitações HTTP
Middlewares
Npm
ES6
Emissor de eventos
Buffers
Fluxos
Tubos
Crons
Expressar
Servindo arquivos estáticos
JSON e XML
Cors
WebSockets
Motores de modelos (guidão)
Gerenciamento de sessão
Cache na memória
Conectando -se a bancos de dados (SQL, Mongoose)
Programação assíncrona (Async/ Await)
Promessas
Singletons
Autorização e autenticação
Tópicos dos trabalhadores
Clustering
Segurança da API
Singapore government logo

The hiring managers felt that through the technical questions that they asked during the panel interviews, they were able to tell which candidates had better scores, and differentiated with those who did not score as well. They are highly satisfied with the quality of candidates shortlisted with the Adaface screening.


85%
reduction in screening time

Node.js Online Test FAQs

Posso usar isso para avaliar as habilidades do TypeScript e NodeJS?

Sim. Podemos personalizar a avaliação dos desenvolvedores de nó TypeScript. Você pode verificar nosso Teste do Type-Cript padrão para ter uma noção de quais perguntas serão usadas para avaliar as habilidades do TypeScript. A avaliação final terá questões do MCQ para avaliar o TypeScript, NodeJs e perguntas de codificação para avaliar as habilidades práticas de programação JavaScript.

Posso combinar várias habilidades em uma avaliação personalizada?

Sim absolutamente. As avaliações personalizadas são configuradas com base na descrição do seu trabalho e incluirão perguntas sobre todas as habilidades obrigatórias que você especificar.

Você tem algum recurso anti-trapaça ou procurador?

Temos os seguintes recursos anti-trapaça:

  • Perguntas não-goleadas
  • IP Proctoring
  • Web Proctoring
  • Proctoring da webcam
  • Detecção de plágio
  • navegador seguro

Leia mais sobre os Recursos de Proctoring.

Como interpreto as pontuações dos testes?

O principal a ter em mente é que uma avaliação é uma ferramenta de eliminação, não uma ferramenta de seleção. Uma avaliação de habilidades é otimizada para ajudá -lo a eliminar os candidatos que não são tecnicamente qualificados para o papel, não é otimizado para ajudá -lo a encontrar o melhor candidato para o papel. Portanto, a maneira ideal de usar uma avaliação é decidir uma pontuação limite (normalmente 55%, ajudamos você a comparar) e convidar todos os candidatos que pontuam acima do limiar para as próximas rodadas da entrevista.

Para que nível de experiência posso usar este teste?

Cada avaliação do Adaface é personalizada para a descrição do seu trabalho/ persona do candidato ideal (nossos especialistas no assunto escolherão as perguntas certas para sua avaliação de nossa biblioteca de mais de 10000 perguntas). Esta avaliação pode ser personalizada para qualquer nível de experiência.

Todo candidato recebe as mesmas perguntas?

Sim, facilita muito a comparação de candidatos. As opções para perguntas do MCQ e a ordem das perguntas são randomizadas. Recursos anti-traking/proctoring no local. Em nosso plano corporativo, também temos a opção de criar várias versões da mesma avaliação com questões de níveis de dificuldade semelhantes.

Eu sou um candidato. Posso tentar um teste de prática?

Não. Infelizmente, não apoiamos os testes práticos no momento. No entanto, você pode usar nossas perguntas de amostra para prática.

Qual é o custo de usar este teste?

Você pode conferir nossos planos de preços.

Posso obter uma avaliação gratuita?

Sim, você pode se inscrever gratuitamente e visualizar este teste.

Acabei de me mudar para um plano pago. Como posso solicitar uma avaliação personalizada?

Aqui está um guia rápido sobre Como solicitar uma avaliação personalizada no Adaface.

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