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Celebal Technologies Node JS Developer Interview Questions, Process, and Tips

Updated 9 Apr 2024

Top Celebal Technologies Node JS Developer Interview Questions and Answers

Celebal Technologies Node JS Developer Interview Experiences

2 interviews found

Node JS Developer Interview Questions & Answers

user image Pratham Kumar

posted on 9 Apr 2024

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
-

I applied via LinkedIn and was interviewed before Apr 2023. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. Difference between shallow copy and deep copy
  • Ans. 

    Shallow copy only copies the references of nested objects, while deep copy creates new copies of nested objects.

    • Shallow copy creates a new object, but does not create copies of nested objects. Changes in nested objects reflect in both original and shallow copied objects.

    • Deep copy creates a new object and also creates copies of nested objects. Changes in nested objects do not reflect in the original object.

  • Answered by AI
  • Q2. What is node js
  • Ans. 

    Node.js is a JavaScript runtime built on Chrome's V8 JavaScript engine that allows developers to run JavaScript on the server side.

    • Node.js is an open-source, cross-platform runtime environment for executing JavaScript code outside of a browser.

    • It uses an event-driven, non-blocking I/O model that makes it lightweight and efficient for real-time applications.

    • Node.js is commonly used for building web servers, APIs, and mi...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Having good javascript knowledge

Skills evaluated in this interview

I applied via Campus Placement and was interviewed in Apr 2022. There were 3 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 Resume tips
Round 2 - Aptitude Test 

The questions were relatively easy.

Round 3 - Technical 

(3 Questions)

  • Q1. The process was very streamlined
  • Q2. 1. What is Node.js? Describe the inner workings of Node.js
  • Ans. 

    Node.js is a JavaScript runtime built on Chrome's V8 JavaScript engine, used for server-side and networking applications.

    • Node.js is an open-source, cross-platform runtime environment for executing JavaScript code outside of a browser.

    • It uses an event-driven, non-blocking I/O model that makes it lightweight and efficient.

    • Node.js allows developers to build scalable and high-performance applications.

    • It provides a rich set...

  • Answered by AI
  • Q3. 2. What are the main modules of Node.js? Explain in detail.
  • Ans. 

    The main modules of Node.js are HTTP, File System, Path, and Events.

    • HTTP module allows Node.js to transfer data over the HyperText Transfer Protocol (HTTP).

    • File System module enables interaction with the file system, allowing reading, writing, and manipulating files.

    • Path module provides utilities for working with file and directory paths.

    • Events module allows for event-driven programming, enabling the creation and handl

  • Answered by AI

Interview Preparation Tips

Topics to prepare for Celebal Technologies Node JS Developer interview:
  • Node.Js
  • Javascript
Interview preparation tips for other job seekers - Just a little bit of preparation will get you through the interview.

Skills evaluated in this interview

Node JS Developer Interview Questions Asked at Other Companies

Q1. 2. What are the main modules of Node.js? Explain in detail.
Q2. What are joins in mysql ? what is middleware ? what is JWT ? Diff ... read more
Q3. 1. What is Node.js? Describe the inner workings of Node.js
asked in Infosys
Q4. How do you deploy your Nodejs application?
Q5. What are closures??promises??callback??asynchrnous programming??a ... read more

Interview questions from similar companies

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

Round 1 - Technical 

(1 Question)

  • Q1. 1 . Oops concept in detail 2 DBMS 3. Data base query
Round 2 - HR 

(1 Question)

  • Q1. Document verification

Interview Preparation Tips

Interview preparation tips for other job seekers - For freshers should be clear on basic concepts.
For experienced should be detailed knowledge on their domain.

I applied via Naukri.com and was interviewed before May 2021. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. Basic java concepts like collection frame work, exception handling

Interview Preparation Tips

Interview preparation tips for other job seekers - Learn basics well, be confident, show you are flexible enough to learn

I was interviewed in Jun 2017.

Interview Preparation Tips

Round: Technical Interview
Experience: They asked java basics,
what we wrote in resume will ask
about project
Tips: please prepare basics things

I applied via Campus Placement and was interviewed before Oct 2020. There was 1 interview round.

Interview Questionnaire 

2 Questions

  • Q1. What is encapsulation ?
  • Ans. 

    Encapsulation is the process of hiding implementation details and providing access to only necessary information.

    • Encapsulation helps in achieving data abstraction and information hiding.

    • It allows for better control over data and prevents unauthorized access.

    • In Java, encapsulation is achieved through the use of access modifiers such as private, public, and protected.

    • For example, a class may have private variables that c...

  • Answered by AI
  • Q2. What is the meaning of string.
  • Ans. 

    A string is a sequence of characters used to represent text in programming.

    • Strings are often used for storing and manipulating text data.

    • In Java, strings are represented by the String class.

    • Strings can be concatenated using the + operator.

    • Strings are immutable, meaning they cannot be changed once created.

    • Examples of string literals include "hello world" and "42".

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - do not tell about salary expectations

Skills evaluated in this interview

I applied via Naukri.com and was interviewed in Aug 2018. There were 5 interview rounds.

Interview Questionnaire 

4 Questions

  • Q1. 1.Core java 2.Spring 3. Hibernate 4. Spring Boot 5. SQL 6. AngularJS
  • Ans. 

    The question is asking about the candidate's knowledge in Core Java, Spring, Hibernate, Spring Boot, SQL, and AngularJS.

    • Core Java is the foundation of Java programming language.

    • Spring is a popular framework for building Java applications.

    • Hibernate is an ORM tool used for mapping Java objects to database tables.

    • Spring Boot is a framework for building microservices.

    • SQL is a language used for managing relational databases...

  • Answered by AI
  • Q2. 1. How to connect 2 DBs from spring boot application
  • Ans. 

    To connect 2 DBs from a Spring Boot application, configure multiple data sources and use JdbcTemplate or EntityManager for each DB.

    • Configure multiple data sources in the application.properties file

    • Create separate configuration classes for each data source

    • Use JdbcTemplate or EntityManager to interact with each DB

    • Specify the appropriate data source in the repository or service classes

  • Answered by AI
  • Q3. 2. Difference between abstract method implementation and default method
  • Ans. 

    Abstract method implementation is mandatory while default method is optional.

    • Abstract method has no implementation in the abstract class and must be implemented by the subclass.

    • Default method has a default implementation in the interface and can be overridden by the implementing class.

    • Abstract method is used to enforce a contract while default method is used to provide a default behavior.

    • Example: abstract method - publ...

  • Answered by AI
  • Q4. 1. About salary and expectation

Interview Preparation Tips

Round: Test
Experience: Technical written test

General Tips: Terrible interview. HR told to give 11% hike with 6% variable and 5% fixed. I kicked off the company.
Skills: Web Technologies, Java Application Development
Duration: 1-4 weeks

Skills evaluated in this interview

Interview Questionnaire 

1 Question

  • Q1. Abstraction

I applied via Company Website

Interview Questionnaire 

1 Question

  • Q1. Java

Interview Preparation Tips

Interview preparation tips for other job seekers - Yes

I applied via Campus Placement and was interviewed before Jun 2020. There were 7 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. What java
  • Ans. 

    Java is a high-level, object-oriented programming language used to develop applications for various platforms.

    • Java is platform-independent and can run on any platform with a JVM.

    • It is used for developing web, mobile, desktop, and enterprise applications.

    • Java has a vast library of pre-built classes and APIs.

    • It supports multithreading, exception handling, and garbage collection.

    • Java is widely used in the industry for its...

  • Answered by AI
  • Q2. Why java
  • Ans. 

    Java is a popular, versatile, and reliable programming language used for developing a wide range of applications.

    • Java is platform-independent, making it easy to write code once and run it on multiple platforms.

    • It has a vast library of pre-built classes and APIs, making development faster and easier.

    • Java is highly secure and provides built-in features for encryption and authentication.

    • It is widely used in enterprise app...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Yes

Skills evaluated in this interview

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Celebal Technologies Interview FAQs

How many rounds are there in Celebal Technologies Node JS Developer interview?
Celebal Technologies interview process usually has 2 rounds. The most common rounds in the Celebal Technologies interview process are Technical, Aptitude Test and Resume Shortlist.
How to prepare for Celebal Technologies 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 Celebal Technologies. The most common topics and skills that interviewers at Celebal Technologies expect are Node.Js, Javascript, HTML, .Net and API.
What are the top questions asked in Celebal Technologies Node JS Developer interview?

Some of the top questions asked at the Celebal Technologies Node JS Developer interview -

  1. 2. What are the main modules of Node.js? Explain in deta...read more
  2. 1. What is Node.js? Describe the inner workings of Node...read more
  3. Difference between shallow copy and deep c...read more

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Celebal Technologies Node JS Developer Interview Process

based on 1 interview

Interview experience

5
  
Excellent
View more

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Celebal Technologies Node JS Developer Salary
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₹5 L/yr - ₹6.5 L/yr
7% more than the average Node JS Developer Salary in India
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