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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

NodeJS/ JavaScript online test is designed and validated by industry experts to help tech recruiters and hiring managers assess the NodeJS and JavaScript programming skills of the candidate. The test screens candidates for the following common Node JS skills hiring managers look for:

  • JavaScript fundamentals (ES6 and OOPs)
  • Asynchronous programming and Promises
  • Request-Response lifecycle and status codes
  • Building Web servers and API servers using Express JS
  • JSON parsing and serving
  • Structure a Node application in modules
  • Understanding of Node Event loop and Event emitter
  • Understanding of Buffers, Streams, and Pipes
  • Managing node packages
  • Connecting to SQL or Mongo database in Node
  • Working with files and serving static files
  • Custom routes
  • Efficient use of common middlewares
  • Knowledge of Template Engines like Handlebars
  • Building, testing and releasing Node apps
  • Error and exception handling
  • In-depth understanding of Node event loop

The test also has code-tracing MCQ questions and coding questions to evaluate hands-on JavaScript programming skills.

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


Res methods
                        If none of the methods (, 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


  • A
  • B
  • C
  • D


Longest Road
                        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.
    🧐 Question🔧 Skill


    Res methods
    3 mins


    Longest Road
    25 mins
    🧐 Question🔧 Skill💪 Difficulty⌛ Time
    Res methods
    Medium3 mins
    Longest Road
    Medium25 minsSolve
    Reason #4

    1200+ customers in 75 countries


    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

    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 #6

    Detailed scorecards & comparative results

    Reason #7

    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 #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

    How is the test customized for Senior Node Developers?

    The questions for Senior Node Developers will be of a higher difficulty level and are based on advanced topics like:

    • Session and Cookie management
    • Using Webpack
    • Differences between development and production environment
    • Efficient in-memory data management
    • Websockets in Node
    • Designing a secure authentication system in Node
    • Writing custom middlewares
    • Custom Error Handling
    • Scaling node process (forks)
    • Improving server performance with Worker Threads and Clustering
    • Caching query requests for improving speed
    • Unit and integration tests
    • Handling Node servers behind proxy applications
    • Semantic version and dependency management
    • Custom NPM scripts
    • API Security (NoSQL injection, XSS protection, Rate Limiting)
    • API Documentation & Deployment
    • Deployment With PM2, NGINX, SSL
    • Using Nginx as a reverse proxy and load balancer
    • Handling CORS

    Additionally, the MCQs and coding question to evaluate JavaScript skills will be of higher difficulty levels.

    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?

    JavaScript fundamentals
    NodeJS under-the-hood
    ExpressJS fundamentals
    Request Response
    Routing & Controller Methods
    Handle HTTP requests
    Event Emitter
    Serving static files
    JSON and XML
    Templating engines (Handlebars)
    Session management
    In-memory cache
    Connecting to databases (SQL, Mongoose)
    Asynchronous programming (Async/ Await)
    Authorization and authentication
    Worker threads
    API security
    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.

    reduction in screening time

    Node.js Online Test FAQs

    Can I use this for evaluating TypeScript and NodeJS skills?

    Yes. We can customize the assessment for TypeScript Node developers. You can check our standard TypeScript test to get a sense of what questions will be used to evaluate TypeScript skills. The final assessment will have MCQ questions to evaluate TypeScript, NodeJS and coding questions to evaluate hands-on JavaScript programming skills.

    Can I combine multiple skills into one custom assessment?

    Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify.

    Do you have any anti-cheating or proctoring features in place?

    We have the following anti-cheating features in place:

    • Non-googleable questions
    • IP proctoring
    • Web proctoring
    • Webcam proctoring
    • Plagiarism detection
    • Secure browser

    Read more about the proctoring features.

    How do I interpret test scores?

    The primary thing to keep in mind is that an assessment is an elimination tool, not a selection tool. A skills assessment is optimized to help you eliminate candidates who are not technically qualified for the role, it is not optimized to help you find the best candidate for the role. So the ideal way to use an assessment is to decide a threshold score (typically 55%, we help you benchmark) and invite all candidates who score above the threshold for the next rounds of interview.

    What experience level can I use this test for?

    Each Adaface assessment is customized to your job description/ ideal candidate persona (our subject matter experts will pick the right questions for your assessment from our library of 10000+ questions). This assessment can be customized for any experience level.

    Does every candidate get the same questions?

    Yes, it makes it much easier for you to compare candidates. Options for MCQ questions and the order of questions are randomized. We have anti-cheating/ proctoring features in place. In our enterprise plan, we also have the option to create multiple versions of the same assessment with questions of similar difficulty levels.

    I'm a candidate. Can I try a practice test?

    No. Unfortunately, we do not support practice tests at the moment. However, you can use our sample questions for practice.

    What is the cost of using this test?

    You can check out our pricing plans.

    Can I get a free trial?

    Yes, you can sign up for free and preview this test.

    I just moved to a paid plan. How can I request a custom assessment?

    Here is a quick guide on how to request a custom assessment on Adaface.

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