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Loumus Data Systems Fullstack Javascript Developer Interview Questions, Process, and Tips

Updated 24 Sep 2022

Loumus Data Systems Fullstack Javascript Developer Interview Experiences

1 interview found

I applied via Naukri.com and was interviewed before Sep 2021. There were 2 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
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Round 2 - Technical 

(5 Questions)

  • Q1. What's difference between let , var and const ?
  • Ans. 

    let, var and const are all used to declare variables in JavaScript, but they differ in their scope and mutability.

    • let has block scope and can be reassigned

    • var has function scope and can be reassigned

    • const has block scope and cannot be reassigned, but its properties can be mutated

  • Answered by AI
  • Q2. Explain Higher order functions
  • Ans. 

    Higher order functions are functions that take other functions as arguments or return functions as their output.

    • Higher order functions can be used to create more flexible and reusable code.

    • They allow for functions to be composed and combined in various ways.

    • Examples of higher order functions include map, filter, and reduce in JavaScript.

    • Higher order functions can also be used for currying and partial application.

  • Answered by AI
  • Q3. Design a calculator in React
  • Ans. 

    A calculator app built using React

    • Create a component for the calculator

    • Use state to keep track of the input and result

    • Implement functions for basic arithmetic operations

    • Add buttons for each number and operation

    • Display the input and result on the screen

  • Answered by AI
  • Q4. Design a database schema for nested comments on a post
  • Ans. 

    Design a database schema for nested comments on a post

    • Create a table for posts with a unique ID

    • Create a table for comments with a unique ID, post ID, and parent comment ID

    • Use foreign keys to link comments to posts and parent comments

    • Use a recursive function to retrieve nested comments

  • Answered by AI
  • Q5. What is event loop in javascript?
  • Ans. 

    Event loop is a mechanism in JavaScript that handles asynchronous operations.

    • Event loop continuously checks the call stack and the task queue.

    • If the call stack is empty, it takes the first task from the queue and pushes it to the call stack.

    • Event loop is responsible for handling callbacks and promises.

    • Event loop prevents blocking of the main thread.

  • Answered by AI

Interview Preparation Tips

Topics to prepare for Loumus Data Systems Fullstack Javascript Developer interview:
  • Javascript
  • React.Js
  • Node.Js
Interview preparation tips for other job seekers - This company is looking to hire average skilled people with high confidence.

Skills evaluated in this interview

Interview questions from similar companies

I applied via LinkedIn and was interviewed in Nov 2020. There were 4 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. 1) General C# and Sql Questions.. some concepts in more depth
  • Q2. Joins, Union, Linq, Collections

Interview Preparation Tips

Interview preparation tips for other job seekers - Be Prepared with basic C# questions like delegates, generics, events, interfaces, static classes with some examples

Sql Questions like types of Joins, Subquery, Union, view, stored proc, identity, indexes with some examples

Interview Questionnaire 

1 Question

  • Q1. Basic OOPS questions like 4 pillars of OOPS and their real life applications. Abstract class. DBMS Inner join and Outer join.

I applied via Approached by Company and was interviewed before Jun 2021. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. Nornam Java , spring boot questions

Interview Preparation Tips

Interview preparation tips for other job seekers - Read java , spring boot, microservices, cloud pcf , aws

I applied via Campus Placement and was interviewed in Nov 2020. There were 4 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Tell me your strengths and weaknesses ?
  • Q2. Why did you choose this field?

Interview Preparation Tips

Interview preparation tips for other job seekers - Overall tough one if u dnt prepare well

I appeared for an interview in Nov 2020.

Round 1 - Coding Test 

(1 Question)

Round duration - 2 hours
Round difficulty - Medium

In the 1st round 
Aptitude
Reasoning
English
Automata fix( code debug) 
Timing in morning
Environment is good
Interviewer was very cool and interactive

  • Q1. 

    Encode the Message Problem Statement

    Given a text message, your task is to return the Run-length Encoding of the given message.

    Run-length encoding is a fast and simple method of encoding strings, repres...

  • Ans. 

    Implement a function to encode a text message using run-length encoding.

    • Iterate through the message and count consecutive characters

    • Append the character and its count to the encoded message

    • Handle edge cases like single characters or empty message

  • Answered by AI
Round 2 - Video Call 

(1 Question)

Round duration - 30 minutes
Round difficulty - Medium

This is interview round 
Ques from basic electronics
C language

  • Q1. 

    Print Name and Age Problem Statement

    Create a class named Person with a string variable 'name' and an integer variable 'age', such that these variables are not accessible outside the class. Implement a me...

  • Ans. 

    Create a class Person with private variables name and age, and methods to set and get their values.

    • Create a class Person with private variables 'name' and 'age'.

    • Implement a method setValue to set the variables' values.

    • Implement a method getValue to print the variables' values.

    • Ensure the name is a non-empty string and the age is a non-negative integer.

    • Encapsulate the data and provide a clear interface for setting and ge

  • Answered by AI

Interview Preparation Tips

Eligibility criteriaAbove 6 cgpaCognizant interview preparation:Topics to prepare for the interview - Electronics basics, C language , Data structure, OOPS, ProjectsTime required to prepare for the interview - 2 monthsInterview preparation tips for other job seekers

Tip 1 : Do aptitude from indiabix. Go through your basics. At least one language u know. Learn about your branch basics. Know concept of data structure and oops. 
Tip 2 : prepare your final project well. 

Application resume tips for other job seekers

Tip 1 : the skills you know very well mention in resume
Tip 2 : mention project in resume

Final outcome of the interviewSelected

Skills evaluated in this interview

I applied via Naukri.com and was interviewed before May 2021. There were 3 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. Java Collection, OOPS, Seralization
Round 2 - Technical 

(1 Question)

  • Q1. Java OOPS, Collection, threading, SQL
Round 3 - HR 

(1 Question)

  • Q1. Nothing specific, Salary Negotiations.

Interview Preparation Tips

Interview preparation tips for other job seekers - overall good experience and process was quick

I applied via Naukri.com and was interviewed in Aug 2020. There were 5 interview rounds.

Interview Questionnaire 

3 Questions

  • Q1. Aws vpc gateway questions, devops drawback
  • Q2. Interfaces in oops
  • Ans. 

    Interfaces define a contract for classes to implement certain methods and properties.

    • Interfaces allow for polymorphism and loose coupling.

    • Classes can implement multiple interfaces.

    • Interfaces cannot be instantiated on their own.

    • Interfaces can have default method implementations.

    • Interfaces can be used to enforce design patterns like the adapter pattern.

  • Answered by AI
  • Q3. Meta programing

Interview Preparation Tips

Interview preparation tips for other job seekers - Not at all good experience. Looks like the structure is baffled now after pandemic hit. First of all HR people, they have so much attitude that you can't even ask them any query regarding your JD or project. Secondly there are many rounds but it all depends upon the interviewer mood only and only. Because you are not hired for a direct project, so if the interviewer is egoistic and high attitude, then it's difficult to get positive feedback even if round well all well. Disappointing experience. Suggestion would be to put right people for talent selection. If people are kept in similar way, every new candidate might have negative experience.

Interview Questionnaire 

1 Question

  • Q1. Basic questions related to skillset

Interview Questionnaire 

2 Questions

  • Q1. Reverse linked list
  • Q2. Invert tree

Loumus Data Systems Interview FAQs

How many rounds are there in Loumus Data Systems Fullstack Javascript Developer interview?
Loumus Data Systems interview process usually has 2 rounds. The most common rounds in the Loumus Data Systems interview process are Technical and Resume Shortlist.
What are the top questions asked in Loumus Data Systems Fullstack Javascript Developer interview?

Some of the top questions asked at the Loumus Data Systems Fullstack Javascript Developer interview -

  1. What's difference between let , var and cons...read more
  2. Design a database schema for nested comments on a p...read more
  3. what is event loop in javascri...read more

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