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Loumus Data Systems Interview Questions and Answers

Updated 24 Sep 2022
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7 Interview questions

A Fullstack Javascript Developer was asked
Q. What is the 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.

View all Fullstack Javascript Developer interview questions
A Fullstack Javascript Developer was asked
Q. 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

View all Fullstack Javascript Developer interview questions
A Fullstack Javascript Developer was asked
Q. 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.

View all Fullstack Javascript Developer interview questions
A Fullstack Javascript Developer was asked
Q. What is the 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

View all Fullstack Javascript Developer interview questions
A Fullstack Javascript Developer was asked
Q. 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

View all Fullstack Javascript Developer interview questions
A Software Developer Trainee was asked
Q. What is DBMS?which db u have used
Ans. 

DBMS stands for Database Management System. It is a software system that allows users to define, create, maintain and control access to databases.

  • DBMS is used to manage and organize data in a structured manner.

  • It provides a way to store, retrieve and manipulate data efficiently.

  • Examples of DBMS include MySQL, Oracle, SQL Server, and MongoDB.

  • DBMS can be used in various applications such as banking, healthcare, e-co...

View all Software Developer Trainee interview questions
A Software Developer Trainee was asked
Q. What is mvc.how both are different from each other
Ans. 

MVC stands for Model-View-Controller. It is a software design pattern used for developing web applications.

  • MVC separates an application into three interconnected components: Model, View, and Controller.

  • Model represents the data and business logic of the application.

  • View represents the user interface of the application.

  • Controller handles the user input and updates the model and view accordingly.

  • MVP stands for Model...

View all Software Developer Trainee interview questions
Are these interview questions helpful?

Loumus Data Systems Interview Experiences

2 interviews 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.
View all tips
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

I applied via LinkedIn and was interviewed in May 2021. There were 3 interview rounds.

Interview Questionnaire 

4 Questions

  • Q1. Basic questions like- 1.what is asp.net
  • Q2. What is mvc.how both are different from each other
  • Ans. 

    MVC stands for Model-View-Controller. It is a software design pattern used for developing web applications.

    • MVC separates an application into three interconnected components: Model, View, and Controller.

    • Model represents the data and business logic of the application.

    • View represents the user interface of the application.

    • Controller handles the user input and updates the model and view accordingly.

    • MVP stands for Model-View...

  • Answered by AI
  • Q3. What is DBMS?which db u have used
  • Ans. 

    DBMS stands for Database Management System. It is a software system that allows users to define, create, maintain and control access to databases.

    • DBMS is used to manage and organize data in a structured manner.

    • It provides a way to store, retrieve and manipulate data efficiently.

    • Examples of DBMS include MySQL, Oracle, SQL Server, and MongoDB.

    • DBMS can be used in various applications such as banking, healthcare, e-commerc...

  • Answered by AI
  • Q4. Joins, create, update, delete,insert queries

Interview Preparation Tips

Interview preparation tips for other job seekers - Interview round is simple.be confident donot waste interviewer time.

Skills evaluated in this interview

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Interview Tips & Stories
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Can speak English, can’t deliver in interviews
I feel like I can't speak fluently during interviews. I do know english well and use it daily to communicate, but the moment I'm in an interview, I just get stuck. since it's not my first language, I struggle to express what I actually feel. I know the answer in my head, but I just can’t deliver it properly at that moment. Please guide me
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Interview questions from similar companies

I applied via Campus Placement and was interviewed before May 2021. There were 2 interview rounds.

Round 1 - Aptitude Test 

Basic aptitude knowledge

Round 2 - Coding Test 

Strong in java

Interview Preparation Tips

Interview preparation tips for other job seekers - Be confidence and focus on your goal

Interview Questionnaire 

3 Questions

  • Q1. Basic questions from the resume content. Be through with the project mentioned in your resume. Also try to prepare at least one object oriented language basics.
  • Q2. I was asked questions on RADIUS TACACS Firewalls and VPN as I had mentioned network security in my resume
  • Q3. Not at all difficult just as general HR interview

Interview Preparation Tips

Round: Test
Experience: If you are applying as a fresher, you may have to appear for a test which will have basic aptitude questions on General Maths and English followed by two basic coding questions in any language like C C++ Java etc

Round: Group Discussion
Experience: Just be confident in keeping your point. Cracking this won't be that difficult.

I applied via Naukri.com and was interviewed before Jul 2020. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. If "WAS" is shutdown are you ok with DEVops
  • Ans. 

    Yes, I am comfortable with DEVops if WAS is shutdown.

    • I have experience with both WAS and DEVops

    • I understand the dependencies between the two systems

    • I am confident in my ability to troubleshoot and resolve any issues that may arise

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare for tricky questions

Skills evaluated in this interview

I applied via Referral and was interviewed before Nov 2019. There were 3 interview rounds.

Interview Questionnaire 

4 Questions

  • Q1. Tell us about yourself
  • Q2. What were the duties assignes to u previously
  • Q3. What will u do if clients talk to u disrespectfully
  • Ans. 

    I would remain calm, address the issue professionally, and seek to understand the client's concerns while maintaining respect.

    • Stay calm and composed to avoid escalating the situation.

    • Acknowledge the client's feelings: 'I understand this is frustrating for you.'

    • Redirect the conversation to the issue at hand: 'Let's focus on finding a solution.'

    • Set boundaries if necessary: 'I appreciate your concerns, but I would prefer ...

  • Answered by AI
  • Q4. Client is responding to a company service not on personal note. no need to reply. Drop a note to ur manager and HR if the attack is personal and inappropriate they will take the action through right channe...

Interview Preparation Tips

Interview preparation tips for other job seekers - Be on time
Don't fidget
Be calm
Listen question properly ask to repeat if the question is not clear
If u don't know something rather than giving wrong answer tell them u don't have the answer at the hand right now but have come across that

Prepare HR questions beforehand like
Introduction
Strength
Weakness

When asked for expected salary. Always say that standard hike will be good we can discuss if we decide to pursuade further

Interview Questionnaire 

4 Questions

  • Q1. All questions about java only. 1. Different between interface and abstract class . 2.questions on rest Threads 3.java object on hashcode 4. Previous company projects
  • Q2. All about java 1. Explain collection hierarchy 2.Explain exception hierarchy 3.how many of classes in java 4.what are problem u faced while deploying the project and etc on deployment
  • Ans. 

    Collection hierarchy in Java includes interfaces like Collection, List, Set, Queue, and Map with their respective implementations.

    • Collection interface is the root interface in the collection hierarchy

    • List interface extends Collection and allows duplicate elements, with implementations like ArrayList and LinkedList

    • Set interface extends Collection and does not allow duplicate elements, with implementations like HashSet a...

  • Answered by AI
  • Q3. What will be work if hire . And
  • Q4. All about package and joining date
Are these interview questions helpful?

I applied via Naukri.com and was interviewed before Sep 2019. There were 6 interview rounds.

Interview Questionnaire 

3 Questions

  • Q1. IQ Test
  • Q2. Machine Test
  • Q3. Face To Face

Interview Preparation Tips

Interview preparation tips for other job seekers - basically there are 3 rounds:-
1. IQ Test
2. Machine Test
3. Face to Face

IQ Test is not so tough but prepare well Machine Test
Machine Test Question are like :-
Q.1 - We declare a variable in C++ like "is_this_a_variable" and in Java like "IsThisAVariable". There is underscore in between every word and first alphabet of every word is in lowercase in C++ and in Java first alphabet is in capital without underscore. Create a program in which if user input a string in a C++ variable format it will convert the input in java variable format.

Q2. Count the frequency of a string.
user input string - pqhphi
output-
p - 2
q - 1
h - 2
i - 1

Be strong in algorithms and data structure.

I applied via Naukri.com and was interviewed in Aug 2018. There was 0 interview round.

Interview Preparation Tips

General Tips: All Java basic questions will be asked including servlets and jsp even about application and web servers. To clear,1st round you should have strong core Java knowledge along with few real time examples. Collections are mandatory.
Database knowledge could be expected. RestFul and soap along with spring and spring boot, your project details and your responsibilities.
Skills: SOAP, RestFul, Spring, Springboot, Java Application Development, Java Programming, Javascript, Communication, Body Language, Problem Solving, Analytical Skills, Decision Making Skills
Duration: 1-4 weeks

I applied via Referral and was interviewed before Jan 2020. There were 5 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. I was asked about my past experience and few questions on People's Management

Interview Preparation Tips

Interview preparation tips for other job seekers - First and foremost a candidate should have Confidence on what he is talking about. One should have good understanding on what we have updated in our resume. Because that creates the first impression on the person. Most of the times we were asked on points updated in our resume. Good knowledge on the products and services on the role which we have applied for and few questions about Past experience.

Loumus Data Systems Interview FAQs

How many rounds are there in Loumus Data Systems interview?
Loumus Data Systems interview process usually has 2 rounds. The most common rounds in the Loumus Data Systems interview process are Resume Shortlist and Technical.
How to prepare for Loumus Data Systems 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 Loumus Data Systems. The most common topics and skills that interviewers at Loumus Data Systems expect are ETL, SSIS, SSRS, ASP.Net MVC and Azure.
What are the top questions asked in Loumus Data Systems interview?

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

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

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Loumus Data Systems Reviews and Ratings

based on 8 reviews

4.8/5

Rating in categories

4.8

Skill development

4.6

Work-life balance

4.5

Salary

4.6

Job security

4.8

Company culture

4.5

Promotions

4.6

Work satisfaction

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