Call Us Now!
+91 9884412301 | +91 9600112302
info@credosystemz.com
Credo SystemzCredo Systemz
  • Courses
    • TRENDING TECHNOLOGIES TRAINING
    • RPA TRAINING
    • CLOUD COMPUTING TRAINING
    • BIG DATA TRAINING
    • WEB DEVELOPMENT TRAINING
    • MOBILE APPLICATION TRAINING
    • SOFTWARE TESTING TRAINING
    • MICROSOFT TECHNOLOGIES TRAINING
    • JAVA TRAINING
    • PROJECT MANAGEMENT TRAINING
    • DATA WAREHOUSING TRAINING
    • ORACLE TRAINING
    • DATABASE DEVELOPER TRAINING
    • OTHER TRAININGS
    • TRENDING TECHNOLOGIES
      Python Training Data Science Training Angular Training React JS Training ORACLE PRIMAVERA TRAINING Machine Learning Training Hadoop Training Amazon Web Services Training DevOps Training Azure Training PySpark Training MEAN Stack Training
    • RPA TRAINING
      Blue Prism Training UiPath Training Automation Anywhere
    • CLOUD COMPUTING
      Amazon Web Services Training AWS with Devops Training Azure Training AZ 104 Azure Administrator AZ 204 Azure Developer AZ 300 Azure Architect AZ 303 Azure Architect AZ 400 Azure Devops Google Cloud Platform Salesforce Training OpenNebula Training OpenStack Training OpenSpan Training
    • BIG DATA TRAINING
      Hadoop Training Big Data Analytics Training Spark Training
    • WEB DEVELOPMENT
      Angular Training Node JS Training React JS Training React Native Training Ionic Framework Training MEAN Stack Training PHP Training JavaScript Training CoffeeScript Training Less JS Training Graphics Design Training HTML Training CSS Training
    • MOBILE APPLICATION
      Android Training iOS Training iOS Swift Training Kotlin Training Flutter Dart Training
    • SOFTWARE TESTING
      Manual Testing Training UFT / QTP Training Selenium Training API Testing Training Selenium with Python Training Perfecto Mobile Testing Training ETL Testing Training JMeter Training LoadRunner Training Performance Engineering Big Data Testing Training Protractor Testing Training
    • MICROSOFT TECHNOLOGIES
      Dot Net Training MVC Framework ASP.NET MVC with Angular SharePoint Training Advanced Excel Training Excel Macro Training Azure Training Azure Infrastructure Solutions AZ 300 Azure Architect
    • JAVA TRAINING
      Core Java Training Java 8 Training Java J2EE Training Advanced Java Training Hibernate Training Spring Training Struts Training
    • PROJECT MANAGEMENT
      Oracle Primavera Training Primavera P6 Online Training Microsoft Project Training PMP Training ITIL Training Prince2 Training Scrum Master Training Business Analytics Training
    • DATA WAREHOUSING
      Tableau Training Power BI Training Qlikview Training Qlik Sense Training Informatica Training Microstrategy Training Teradata Training Cognos Training SAS Training
    • ORACLE TRAINING
      Oracle PL/SQL Training Oracle DBA Training Oracle Apps Technical Training Oracle Apps SCM Training Oracle Apps HRMS Training Oracle Apps Finance Training Oracle RAC Training PeopleSoft HCM Training PeopleSoft Finance Training
    • DATABASE DEVELOPER
      MongoDB Training Apache Cassandra Training Sybase Training Informix Training Performance Tuning Training
    • OTHER TRAININGS
      Ethical Hacking Training C C++ Training Unix Shell Scripting Training Tensorflow Training Data Modeling Training Workday Training PEGA Training Digital Marketing Training CCNA Training Arduino Training Elm Training Go Programming Training Rust Programming Training CYBER SECURITY TRAINING BIZTALK SERVER TRAINING Spoken English Course
  • Fresher Courses
    • ANGULAR TRAINING
    • REACT TRAINING
    • PYTHON TRAINING
    • JAVA TRAINING
    • SELENIUM TRAINING
  • Placements
    • Career Guidance
      • Interview Questions
      • Resume Building
      • Job Opportunities
    • OVERALL PLACEMENTS
  • About Us
    • Online Training
    • Corporate Training
    • Events
    • Reviews
      • Video Reviews
    • Become an instructor
  • Training
    • Trending Technologies Training
    • RPA TRAINING in Chennai
    • Cloud Computing Training
    • Big Data Hadoop Training in Chennai
    • Web Development Training
    • Mobile Application Training
    • Software Testing Training
    • Microsoft Technologies Training
    • Java Training
    • Project Management Training
    • Data Warehousing Training
    • Oracle Training
    • Database Developer Training
    • Other Training
  • Blogs
    • GENERAL
      • TOP SKILL TO GET A JOB IN MNC
      • INTERVIEW TIPS FOR FRESHERS AND EXPERIENCE
      • TOP TRENDING TECHNOLOGIES
    • DATA SCIENCE
      • MACHINE LEARNING VS DATA SCIENCE
      • DATA SCIENCE INTERVIEW QUESTION AND ANSWER
    • PYTHON
      • WHY LEARN PYTHON
      • JAVA VS PYTHON
      • WHAT IS PYTHON
    • PRIMAVERA
      • LIFECYCLE OF PRIMAVERA
      • EPPM VS PPM
      • PROJECT MANAGEMENT STEPS
    • PMP
      • PMP CERTIFICATION
    • AWS
      • TOP 5 AWS SERVICES
      • AWS VS OPENSTACK
      • AMAZON VS AZURE VS GOOGLE CLOUD
      • WHY DEVELOPERS SHOULD LEARN AWS
    • ANGULAR
      • ANGULAR INTERVIEW QUESTIONS
      • ANGULAR VS REACT VS VUE
    • REACT
      • TOP REASON TO LEARN REACT
    • BLUE PRISM
      • BLUE PRISM VS UI PATH
      • WHAT IS RPA
    • UI PATH
      • RPA CERTIFICATION
    • CLOUD COMPUTING
      • BEST CLOUD COMPUTING SERVICES
    • DEVOPS
      • DEVOPS OVERVIEW
    • NODE JS
      • NODE JS CERTIFICATION
    • HADOOP
      • HADOOP CERTIFICATION
    • AZURE
      • AZURE CERTIFICATION
    • SOFTWARE TESTING
      • HOW TO BECOME A SOFTWARE TESTER
      • MOVE FROM MANUAL TO AUTOMATION TESTING
      • HOW MUCH IS JAVA REQUIRED FOR SELENIUM TESTING
  • Contact Us
  • Courses
    • TRENDING TECHNOLOGIES TRAINING
    • RPA TRAINING
    • CLOUD COMPUTING TRAINING
    • BIG DATA TRAINING
    • WEB DEVELOPMENT TRAINING
    • MOBILE APPLICATION TRAINING
    • SOFTWARE TESTING TRAINING
    • MICROSOFT TECHNOLOGIES TRAINING
    • JAVA TRAINING
    • PROJECT MANAGEMENT TRAINING
    • DATA WAREHOUSING TRAINING
    • ORACLE TRAINING
    • DATABASE DEVELOPER TRAINING
    • OTHER TRAININGS
    • TRENDING TECHNOLOGIES
      Python Training Data Science Training Angular Training React JS Training ORACLE PRIMAVERA TRAINING Machine Learning Training Hadoop Training Amazon Web Services Training DevOps Training Azure Training PySpark Training MEAN Stack Training
    • RPA TRAINING
      Blue Prism Training UiPath Training Automation Anywhere
    • CLOUD COMPUTING
      Amazon Web Services Training AWS with Devops Training Azure Training AZ 104 Azure Administrator AZ 204 Azure Developer AZ 300 Azure Architect AZ 303 Azure Architect AZ 400 Azure Devops Google Cloud Platform Salesforce Training OpenNebula Training OpenStack Training OpenSpan Training
    • BIG DATA TRAINING
      Hadoop Training Big Data Analytics Training Spark Training
    • WEB DEVELOPMENT
      Angular Training Node JS Training React JS Training React Native Training Ionic Framework Training MEAN Stack Training PHP Training JavaScript Training CoffeeScript Training Less JS Training Graphics Design Training HTML Training CSS Training
    • MOBILE APPLICATION
      Android Training iOS Training iOS Swift Training Kotlin Training Flutter Dart Training
    • SOFTWARE TESTING
      Manual Testing Training UFT / QTP Training Selenium Training API Testing Training Selenium with Python Training Perfecto Mobile Testing Training ETL Testing Training JMeter Training LoadRunner Training Performance Engineering Big Data Testing Training Protractor Testing Training
    • MICROSOFT TECHNOLOGIES
      Dot Net Training MVC Framework ASP.NET MVC with Angular SharePoint Training Advanced Excel Training Excel Macro Training Azure Training Azure Infrastructure Solutions AZ 300 Azure Architect
    • JAVA TRAINING
      Core Java Training Java 8 Training Java J2EE Training Advanced Java Training Hibernate Training Spring Training Struts Training
    • PROJECT MANAGEMENT
      Oracle Primavera Training Primavera P6 Online Training Microsoft Project Training PMP Training ITIL Training Prince2 Training Scrum Master Training Business Analytics Training
    • DATA WAREHOUSING
      Tableau Training Power BI Training Qlikview Training Qlik Sense Training Informatica Training Microstrategy Training Teradata Training Cognos Training SAS Training
    • ORACLE TRAINING
      Oracle PL/SQL Training Oracle DBA Training Oracle Apps Technical Training Oracle Apps SCM Training Oracle Apps HRMS Training Oracle Apps Finance Training Oracle RAC Training PeopleSoft HCM Training PeopleSoft Finance Training
    • DATABASE DEVELOPER
      MongoDB Training Apache Cassandra Training Sybase Training Informix Training Performance Tuning Training
    • OTHER TRAININGS
      Ethical Hacking Training C C++ Training Unix Shell Scripting Training Tensorflow Training Data Modeling Training Workday Training PEGA Training Digital Marketing Training CCNA Training Arduino Training Elm Training Go Programming Training Rust Programming Training CYBER SECURITY TRAINING BIZTALK SERVER TRAINING Spoken English Course
  • Fresher Courses
    • ANGULAR TRAINING
    • REACT TRAINING
    • PYTHON TRAINING
    • JAVA TRAINING
    • SELENIUM TRAINING
  • Placements
    • Career Guidance
      • Interview Questions
      • Resume Building
      • Job Opportunities
    • OVERALL PLACEMENTS
  • About Us
    • Online Training
    • Corporate Training
    • Events
    • Reviews
      • Video Reviews
    • Become an instructor
  • Training
    • Trending Technologies Training
    • RPA TRAINING in Chennai
    • Cloud Computing Training
    • Big Data Hadoop Training in Chennai
    • Web Development Training
    • Mobile Application Training
    • Software Testing Training
    • Microsoft Technologies Training
    • Java Training
    • Project Management Training
    • Data Warehousing Training
    • Oracle Training
    • Database Developer Training
    • Other Training
  • Blogs
    • GENERAL
      • TOP SKILL TO GET A JOB IN MNC
      • INTERVIEW TIPS FOR FRESHERS AND EXPERIENCE
      • TOP TRENDING TECHNOLOGIES
    • DATA SCIENCE
      • MACHINE LEARNING VS DATA SCIENCE
      • DATA SCIENCE INTERVIEW QUESTION AND ANSWER
    • PYTHON
      • WHY LEARN PYTHON
      • JAVA VS PYTHON
      • WHAT IS PYTHON
    • PRIMAVERA
      • LIFECYCLE OF PRIMAVERA
      • EPPM VS PPM
      • PROJECT MANAGEMENT STEPS
    • PMP
      • PMP CERTIFICATION
    • AWS
      • TOP 5 AWS SERVICES
      • AWS VS OPENSTACK
      • AMAZON VS AZURE VS GOOGLE CLOUD
      • WHY DEVELOPERS SHOULD LEARN AWS
    • ANGULAR
      • ANGULAR INTERVIEW QUESTIONS
      • ANGULAR VS REACT VS VUE
    • REACT
      • TOP REASON TO LEARN REACT
    • BLUE PRISM
      • BLUE PRISM VS UI PATH
      • WHAT IS RPA
    • UI PATH
      • RPA CERTIFICATION
    • CLOUD COMPUTING
      • BEST CLOUD COMPUTING SERVICES
    • DEVOPS
      • DEVOPS OVERVIEW
    • NODE JS
      • NODE JS CERTIFICATION
    • HADOOP
      • HADOOP CERTIFICATION
    • AZURE
      • AZURE CERTIFICATION
    • SOFTWARE TESTING
      • HOW TO BECOME A SOFTWARE TESTER
      • MOVE FROM MANUAL TO AUTOMATION TESTING
      • HOW MUCH IS JAVA REQUIRED FOR SELENIUM TESTING
  • Contact Us

Hexaware Node JS Interview Questions

  • Home
  • Hexaware Node JS Interview Questions

Hexaware – Node JS Interview Questions

Here is the list of Node JS Interview Questions which are recently asked in Hexaware company. These questions are included for both Freshers and Experienced professionals. Our Node JS Training has Answered all the below Questions.


1. Which is the first argument typically passed to a Node.js callback handler?

The first parameter of the callback is the error value. If the function hits an error, then they typically call the callback with the first parameter being an Error object. If it cleanly exits, then they will call the callback with the first parameter being null and the rest being the return value(s).

2. What are the functionalities of NPM in Node.js?

Node Package Manager provides two main functionalities:
  • It provides online repositories for node.js packages/modules which are searchable on search.nodejs.org.
  • It also provides command line utility to install Node.js packages, do version management and dependency management of Node. js packages.

3. What is the difference between Node.js and Ajax?

The difference between Node.js and Ajax is that, Ajax is a client side technology, often used for updating the contents of the page without refreshing it while Node.js is Server Side JavaScript, used for developing server software.

4. Explain chaining in Node.js.

Chaining in Node.js can be achieved using the asyncnpm module. There are two most commonly used methods for chaining functions provided by the async module: parallel and series.

5. What are “streams” in Node.js? Explain the different types of streams present in Node.js.

Streams are one of the fundamental concepts of Node.js and are a type of data-handling methods, used to read or write input into output sequentially. Streams are used to handle reading/writing files or exchanging information in an efficient way.

There are four fundamental stream types in Node. js: Readable, Writable, Duplex, and Transform streams.

6. What are the exit codes in Node.js? List some exit codes.

Exit codes are the specific codes that can be used to end a process. Some of the examples of exit codes are Uncaught Fatal Exception, Fatal Error, Non-function Internal Exception Handler, Internal Exception handler Run-Time Failure, Internal JavaScript Evaluation Failure, etc.

7. What are Globals in Node.js?

While in browsers the global scope is the window object, in nodeJS the global scope of a module is the module itself, so when defining a variable in the global scope of nodeJS module, it will be local to this module.

<Object> the global namespace object.

8. What is the difference between AngularJS and Node.js?

AngularJS is a JavaScript framework, whereas NodeJS is a cross-platform runtime environment. As a client-side JavaScript framework, AngularJS Angular enables developers to create dynamic web applications based on model-view-controller (MVC) architectural pattern and using HTML as a template language.

9. What is “callback hell” and how can it be avoided?

Callback Hellis an anti-pattern seen in code of asynchronous programming. It is a slang term used to describe and unwieldy number of nested “if” statements or functions. If you are not expecting your application logic to get too complex, a few callbacks seem harmless.

Free PDF : Get our updated Node JS Course Content pdf

10. How does Node.js handle child threads?

Node.js is a single-threaded language which uses the multiple threads in the background for certain tasks as I/O calls but it does not expose child threads to the developer.

11. For what require() is used in Node Js ?

Require() is a built-in function to include external modules that exist in separate files. It reads a JavaScript file, executes it, and then proceeds to return the export object.

12. Explain module.exports in Node Js ?

Exports is the object that returned as the result of a require call. The exports variable is initially set to that same object (i.e. it's a shorthand "alias"), so in the module code you would usually write something like this: let myFunc1 = function() { ... }; let myFunc2 = function() { ... }; exports.

13. Is Node Js Single-threaded ?

Node.js is single-threaded similar to JavaScript but not purely JavaScript code which implies things that are done asynchronously like network calls, file system tasks, DNS lookup, etc.

14. What are events ?

Node.js has an event-driven architecture which can perform asynchronous tasks. It has 'events' module which emits named events that can cause corresponding functions or callbacks to be called.

15. Explain event loop in Node Js ?

The event loop is what allows Node.js to perform non-blocking I/O operations that despite the fact that JavaScript is single-threaded and by offloading operations to the system kernel whenever possible. Since most modern kernels are multi-threaded, they can handle multiple operations executing in the background.

16. What Are The Key Features Of Node.Js?

Features of Node.js
  • Asynchronous and Event Driven
  • Very Fast
  • Single Threaded but Highly Scalable
  • No Buffering
  • License

17. What IDEs Can You Use For Node.Js Development?

js, Angular. js, HTML, CSS, JavaScript, Java, React, and more. With so many built-in development aids, database tools, version control systems, and decompiler, IntelliJ IDEA is the best IDE for Node js application development.

18. Explain How Does Node.Js Work?

Node.js is the JavaScript runtime environment which is based on Google's V8 Engine i.e. with the help of Node. It can run the JavaScript outside of the browser which is single-threaded, based on event-driven architecture, and non-blocking based on the I/O model

19. Explain REPL In Node.Js?

REPL stands for READ, EVAL, PRINT, LOOP is a computer environment similar to Shell (Unix/Linux), command prompt and useful in writing and debugging the codes.Node comes with the REPL environment when it is installed. System interacts with the user through outputs of commands/expressions used.

Book a Free Mock Interviews and Test your Node JS Knowledge with our Experts

TOP MNC's NODE JS INTERVIEW QUESTIONS & ANSWERS

Here we listed all Node JS Interview Questions and Answers which are asked in Top MNCs. Periodically we update this page with recently asked Questions, please do visit our page often and be updated in Node JS.

Accenture
Wipro
Mindtree
Hexon
Rectras
Infosys
Altimetrik
Capgemini
Aspire System
Kone
Pay Pal
Contus
Cognizant
Hexaware
Tenmiles

To become a Node JS Certified professional and join in your dream company, Enroll now for our Best Node JS Training. We help you to crack any level of Node JS Interviews and We offering Node JS Training with 100% Placements.

other top mnc Node JS Interview Q&A

  • Accenture
  • Infosys
  • PayPal
  • Wipro
  • Altimetrik
  • Contus
  • Mindtree
  • Capgemini
  • Cognizant
  • Hexon
  • Aspire Systems
  • Hexaware
  • Rectras
  • Kone
  • Tenmiles

INDIA LOCATIONS

New #30,Old #16A,
Rajalakshmi Nagar, Velachery,
Chennai - 600 042.
Mobile: +91 9884412301

Plot No.8, Vinayaga Avenue,
Rajiv Gandhi Salai, Okkiampettai(OMR),
Chennai – 600 097.
Mobile: +91 9600112302

Refund/Cancellation Policy

INTERNATIONAL LOCATIONS

USA
Houchin Drive, Franklin, TN -37064
Tennessee
Email: info@credosystemz.com
Web: www.credosystemz.com
Chat With Us

UAE
Sima Electronic Building,
LLH Opposite,
Electra Street – Abu Dhabi
Email: info@credosystemz.com
Web: www.credosystemz.com
Chat With Us

TRENDING COURSES

  • Python Training in Chennai
  • Data Science Training in Chennai
  • AWS Training in Chennai
  • Big Data Hadoop Training in Chennai
  • Machine Learning Training in Chennai
  • Selenium Training in Chennai
  • Angular Training in Chennai
  • Oracle Primavera P6 Online Training
  • Mean Stack Training in Chennai
  • DevOps Training in Chennai
  • Microsoft Azure Training in Chennai
  • GCP Training in Chennai

Copyright 2022 CREDO SYSTEMZ | All Rights Reserved.