Marmeto Node Js Backend Developer Interview Questions and Answers

Q1. What is npm in Node.js?
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Q2. Npm stands for Node package Manager, used to install and manage package in Node.js projects.
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Verbal ability
Number series
Coding questions

Q1. Self introduction
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Q1. Screening Round on basics of the Role applied for
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Q2. Basic technical and HR questions
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Q1. Technical round invloving overall work experience, coding questions and scenario based problems
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This round consists of aptitude+reasoning

In this round there were four Node js questions

Q1. Company doesn't came for interview after coding round
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Q1. What is the difference between GET AND POST methods in HTTPS?
Ans. 
GET method is used to request data from a server, while POST method is used to submit data to a server in HTTPS.
• GET requests data from a specified resource, while POST submits data to be processed to a specified resource.

• GET requests can be cached and remain in the browser history, while POST requests are not cached and do not remain in the browser history.

• GET requests have length restrictions on the amount of data tha...read more
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Q2. GET is Retrieves and POST is Sends data.
Ans. 
GET is used to retrieve data from a server, while POST is used to send data to a server.
• GET requests are used to retrieve data from a specified resource. For example, fetching a list of products from an online store.

• POST requests are used to submit data to be processed by a server. For example, submitting a form with user information to create a new account.

• GET requests are idempotent, meaning they can be repeated mult...read more
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Duration: 60min
topic: programming basics

Duration: 45min
topic: DSA(medium)
platform: hackerrank

Q1. "Tailor your resume to highlight role-specific achievements."
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Q2. "Stay updated with industry trends and new technologies."
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1 hour of MCQ, Logical Reasoning and Aptitude

4 Programming MCQs based question

Q1. What projects have you done with Node JS
Ans. 
I have worked on a real-time chat application and a RESTful API using Node JS.
• Developed a real-time chat application using Socket.io

• Built a RESTful API for a blogging platform

• Implemented authentication and authorization using JWT tokens
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Q2. Write a parenthesis validation program in JavaScript
Ans. 
A program to validate parentheses in a string using a stack in JavaScript
• Create an empty stack to store opening parentheses

• Iterate through the string and push opening parentheses onto the stack

• When a closing parenthesis is encountered, pop from the stack and check if it matches the corresponding opening parenthesis

• If stack is empty at the end and all parentheses are matched, return true
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