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Celebal Technologies Node JS Developer Interview Questions, Process, and Tips
Top Celebal Technologies Node JS Developer Interview Questions and Answers
- Q1. 2. What are the main modules of Node.js? Explain in detail.
- Q2. 1. What is Node.js? Describe the inner workings of Node.js
- Q3. Difference between shallow copy and deep copy
Celebal Technologies Node JS Developer Interview Experiences
2 interviews found
Pratham Kumar
I applied via LinkedIn and was interviewed before Apr 2023. There was 1 interview round.
(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.
- 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...
Interview Preparation Tips
Skills evaluated in this interview
Anonymous
I applied via Campus Placement and was interviewed in Apr 2022. There were 3 interview rounds.
The questions were relatively easy.
(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...
- 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
Interview Preparation Tips
- Node.Js
- Javascript
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
I applied via Naukri.com and was interviewed before Aug 2020. There was 1 interview round.
Interview Questionnaire
7 Questions
- Q1. Q1)Strong OOPS concept.
- Ans.
Strong OOPS concept is essential for Java developers to write efficient and maintainable code.
Understanding of classes, objects, inheritance, polymorphism, and encapsulation
Ability to design and implement complex systems using OOPS principles
Experience with design patterns and SOLID principles
Knowledge of interfaces, abstract classes, and access modifiers
Familiarity with UML diagrams for modeling software systems
- Q2. Q2) exception handling, multitasking
- Q3. Q3) collection frameworks internal hierarchical
- Q4. Q4)java server side strong debugging knowledge required it must for selection.
- Q5. 5)you need to specific on your answer and to the point
- Q6. 6)Java utility classes
- Q7. Spring MVC and spring boot all basic automation and bean internal working knowledge
Interview Preparation Tips
Don't be harrree while answering the question
I applied via Company Website and was interviewed in Jul 2020. There was 1 interview round.
Interview Questionnaire
2 Questions
- Q1. What is java
- Ans.
Java is a high-level programming language known for its platform independence and object-oriented approach.
Java is widely used for developing desktop, web, and mobile applications.
It is known for its write once, run anywhere (WORA) capability.
Java uses a virtual machine (JVM) to execute code, providing portability across different operating systems.
It supports multithreading, exception handling, and dynamic memory allo...
- Q2. What is inheritance
- Ans.
Inheritance is a mechanism in object-oriented programming where a new class is created from an existing class.
Allows for code reuse and promotes code organization
The new class (subclass) inherits properties and methods from the existing class (superclass)
Subclass can add new properties and methods or override existing ones
Example: A Car class can inherit properties and methods from a Vehicle class
Interview Preparation Tips
Skills evaluated in this interview
I applied via Referral and was interviewed in Nov 2020. There was 1 interview round.
Interview Questionnaire
1 Question
- Q1. Write a program for sum of numbers?
- Ans.
A program to calculate the sum of numbers.
Create a variable to store the sum.
Iterate through the numbers and add each number to the sum.
Return the sum.
Interview Preparation Tips
Skills evaluated in this interview
Interview Questionnaire
2 Questions
- Q1. What's 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 device with a Java Virtual Machine (JVM)
It is known for its security features and is commonly used for developing web applications, mobile apps, and enterprise software
Java code is compiled into bytecode, which can be executed on any platform that has a JVM instal...
- Q2. Why java?
- Ans.
Java is a versatile, platform-independent language with a vast community and extensive libraries.
Java is object-oriented and easy to learn.
It has a vast community and extensive libraries.
It is platform-independent and can run on any device.
Java is secure and reliable.
It is used in various domains like web development, mobile app development, and enterprise applications.
Examples: Android apps, Spring framework, Hadoop,
Skills evaluated in this interview
I applied via Walk-in and was interviewed before Jan 2021. There were 5 interview rounds.
Interview Questionnaire
6 Questions
- Q1. Are you want to work in Chetu Inc
- Q2. First you complete your core Java then jdbc then servlet then JSP then spring
- Q3. How to eligible for chetu inc
- Q4. There are two ways to go chetu inc first is you complete two years experience then you will be eligible for interview in Chetu inc second way is chetu organize skill centre program you can join this pr...
- Q5. Are you want to know about interview
- Q6. Chetu Inc take CBT and interview
Interview Preparation Tips
Interview Questionnaire
1 Question
- Q1. Few questions on rest API, microservices, java 8 core questions, spring MVC, Hibernate
I applied via Naukri.com and was interviewed before Sep 2020. There was 1 interview round.
Interview Preparation Tips
Interview Questionnaire
5 Questions
- Q1. About java collection api
- Q2. String in java
- Ans.
String is a class in Java used to represent a sequence of characters.
Strings are immutable in Java
String objects can be created using string literals or the new keyword
String class provides various methods for manipulating strings such as substring, replace, etc.
- Q3. Restful webservices , spring MVC flow, spring data, security in rest API.
- Q4. Java8 new features ,stream api, lambda expression,
- Q5. JSON, HashMap and HashTable, design pattern
Skills evaluated in this interview
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Celebal Technologies Node JS Developer Interview Process
based on 1 interview
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