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WITS Innovation Lab Node JS Developer Interview Questions and Answers

Updated 27 Jun 2024

WITS Innovation Lab Node JS Developer Interview Experiences

1 interview found

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Javascript simple questions
  • Q2. What are Promise
  • Ans. 

    Promises are objects representing the eventual completion or failure of an asynchronous operation.

    • Promises are used to handle asynchronous operations in JavaScript.

    • They can be in one of three states: pending, fulfilled, or rejected.

    • Promises can be chained together using .then() method.

    • They help in avoiding callback hell and writing cleaner asynchronous code.

  • Answered by AI
Round 2 - Coding Test 

Change key value in nested object key is provided

Round 3 - Technical 

(2 Questions)

  • Q1. What is Prototype
  • Ans. 

    Prototype is an object that is associated with every functions and objects by default in JavaScript.

    • Prototype is used to add new properties or methods to existing objects or functions.

    • It allows objects to inherit properties and methods from other objects.

    • Changing the prototype of an object affects all instances of that object.

  • Answered by AI
  • Q2. What's middle ware
  • Ans. 

    Middleware is software that acts as a bridge between different applications or components, allowing them to communicate and interact with each other.

    • Middleware is used to handle tasks such as authentication, logging, error handling, and more in web applications.

    • It can modify incoming requests, outgoing responses, or both.

    • Examples of middleware in Node.js include Express.js middleware like body-parser and morgan.

  • Answered by AI

Skills evaluated in this interview

Node JS Developer Jobs at WITS Innovation Lab

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Interview questions from similar companies

I applied via Company Website and was interviewed before Dec 2020. There were 4 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Questions on Java,SQL,some trending technologies(IOT,Big data),pattern questions, programming questions with different approaches.

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare basics of DSA, have knowledge about the databases, some common dml ,ddl statements, programming knowledge of a particular language like C,Java, python,etc...have good command on oops concepts... little bit of frameworks knowledge will also help

I applied via Newspaper Ad and was interviewed before Jun 2021. There were 3 interview rounds.

Round 1 - Aptitude Test 
Round 2 - Technical 

(1 Question)

  • Q1. Basic questions of java.
Round 3 - HR 

(1 Question)

  • Q1. Intro and other hr related questions.

Interview Preparation Tips

Interview preparation tips for other job seekers - Cover the basic questions regarding the programming language.

I applied via Referral and was interviewed before Apr 2021. There were 2 interview rounds.

Round 1 - Aptitude Test 

Puzzles, Psychometric Test

Round 2 - One-on-one 

(1 Question)

  • Q1. Some water in 3 Jars question, you had to measure out 5L correctly

Interview Preparation Tips

Interview preparation tips for other job seekers - Make the interview interactive, I got this input from another Senior. Before i went into the interview room the volunteers were telling all those who goes into Room No 1 is screwed. I was praying i don't get room no 1. But fortunately for me I got room no 1 because when the interviewer gave me the puzzle and handed over pen and paper he went back to relax his posture and when i explained i will fill the 5L Jar first, he immediately came forward to listen to me, at that moment i knew i got the job because i felt the previous candidates never made their interview interactive and that's why he went back to relax his posture.

I applied via Company Website and was interviewed before Jun 2021. There were 2 interview rounds.

Round 1 - Aptitude Test 

First round was coding as well as aptitude done together went well I guess focusing on codes helps a lot.

Round 2 - Technical 

(1 Question)

  • Q1. 2nd round included tr and mr round went quite enegritic

Interview Preparation Tips

Interview preparation tips for other job seekers - Resume skills matters a lot don't fill resume the technologies you don't even aware of

I was interviewed in Sep 2016.

Interview Questionnaire 

3 Questions

  • Q1. Tell me about yourself
  • Ans. 

    I am a passionate software developer with experience in Java, Python, and web development.

    • Experienced in Java, Python, and web development technologies

    • Strong problem-solving skills and ability to work in a team

    • Completed multiple projects including a web-based inventory management system

  • Answered by AI
  • Q2. Simple coding questions..Basically pattern.
  • Q3. And also they will ask about your projects.

Interview Preparation Tips

Round: Test
Experience: 60 multiple choice questions so have to manage time carefully.
Tips: Have to give equal importance to all the sections..So try to do well in all section.
Duration: 1 hour 30 minutes
Total Questions: 60

Round: Technical + HR Interview
Experience: Don't panic...Only write those things that you know in your resume.

Skills: Smart Coding
College Name: Jaypee Institute Of Information Technology, Noida

I was interviewed in May 2017.

Interview Preparation Tips

Round: Test
Total Questions: 20

Round: Group Discussion
Duration: 1 hour

Skills: Coding Skills And Knowledge On Data Structures

I was interviewed in Jun 2017.

Interview Preparation Tips

Round: Test
Duration: 1 hour 30 minutes

Skills: Engineering Basics

I was interviewed in May 2017.

Interview Preparation Tips

Round: Group Discussion
Duration: 7 hours

College Name: Andhra university

I was interviewed in Aug 2017.

Interview Preparation Tips

Round: Test
Tips: Practice e litmus questions and also give mock tests on placement season
Duration: 2 hours

Round: Technical + HR Interview
Experience: The interviewer asked me questions from the subjects I mentioned in my CV and also asked so many situational questions like what will you do in this situation etc.

Skills: Presence Of Mind, Technical Skill

WITS Innovation Lab Interview FAQs

How many rounds are there in WITS Innovation Lab Node JS Developer interview?
WITS Innovation Lab interview process usually has 3 rounds. The most common rounds in the WITS Innovation Lab interview process are Technical and Coding Test.
How to prepare for WITS Innovation Lab Node JS Developer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at WITS Innovation Lab. The most common topics and skills that interviewers at WITS Innovation Lab expect are MySQL, MongoDB, Microservices, TypeScript and AWS.
What are the top questions asked in WITS Innovation Lab Node JS Developer interview?

Some of the top questions asked at the WITS Innovation Lab Node JS Developer interview -

  1. What is Protot...read more
  2. What's middle w...read more
  3. Javascript simple questi...read more

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WITS Innovation Lab Node JS Developer Interview Process

based on 1 interview

Interview experience

3
  
Average
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WITS Innovation Lab Node JS Developer Salary
based on 4 salaries
₹6.1 L/yr - ₹8 L/yr
30% more than the average Node JS Developer Salary in India
View more details

WITS Innovation Lab Node JS Developer Reviews and Ratings

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5.0/5

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5.0

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5.0

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5.0

Salary

5.0

Job security

5.0

Company culture

5.0

Promotions

5.0

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Explore 1 Review and Rating
Nodejs Developer

Mohali

2-4 Yrs

Not Disclosed

NodeJs Developer

Mohali,

Punjab

1-5 Yrs

Not Disclosed

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