Nirvana Solutions Software Engineer Trainee Interview Questions and Answers

Q1. What is git, how GitHub work without git
Ans. 
Git is a version control system used for tracking changes in code. GitHub is a platform for hosting code repositories and collaborating with others.
• Git is a distributed version control system that allows multiple developers to work on the same codebase without conflicts.

• GitHub is a web-based platform that provides hosting for Git repositories, along with additional features like issue tracking, pull requests, and proje...read more
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Q2. What is salting, hashing, rainbow table
Ans. 
Salting, hashing, and rainbow tables are techniques used in cryptography to secure passwords.
• Salting involves adding a random string of characters to a password before hashing to prevent attacks like rainbow tables.

• Hashing is the process of converting a password into a fixed-length string of characters using a cryptographic hash function.

• Rainbow tables are precomputed tables used to crack hashed passwords by matching a
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Basic questions are there in the test.

Q1. Linked list merging
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Q2. JavaScript difference between && and &&&
Ans. 
&& is a logical AND operator in JavaScript, while &&& is not a valid operator.
• && is used to combine two logical expressions and returns true only if both expressions are true

• &&& is not a valid operator in JavaScript and will result in a syntax error
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Q1. What is the difference between git and github
Ans. 
Git is a version control system used for tracking changes in source code, while GitHub is a platform for hosting Git repositories and collaborating on projects.
• Git is a distributed version control system that allows multiple developers to work on the same project simultaneously.

• GitHub is a web-based platform that provides hosting for Git repositories and additional collaboration features like issue tracking and pull re...read more
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Q2. Can git be used without github and vice versa
Ans. 
Yes, git can be used without GitHub and vice versa.
• Git is a version control system that can be used locally on a computer without the need for a remote repository like GitHub.

• GitHub is a platform that hosts Git repositories and provides additional collaboration features, but Git can be used independently.

• Git can be used with other remote repository hosting services like Bitbucket or GitLab.

• GitHub can also be used with ...read more
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General numerical problems

Q1. What was the project in last year?
Ans. 
Developed a web-based inventory management system for a retail company.
• Used Java for backend development

• Implemented responsive design using HTML, CSS, and JavaScript

• Integrated payment gateway for online transactions
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Q2. What was your role in it?
Ans. 
I was responsible for developing and testing new features for the company's mobile application.
• Developed new features for the mobile application

• Tested the functionality of the features

• Collaborated with team members to ensure successful implementation
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Q3. What was your contribution in it?
Ans. 
I contributed by developing new features, fixing bugs, and optimizing code for the software project.
• Developed new features based on user requirements

• Fixed bugs reported by QA team or users

• Optimized code for better performance and efficiency
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Q1. What was your project for last year?
Ans. 
Developed a web-based project management tool for tracking tasks and deadlines.
• Used HTML, CSS, and JavaScript for front-end development

• Implemented backend functionality using Node.js and MongoDB

• Incorporated user authentication and authorization features

• Utilized RESTful APIs for communication between front-end and back-end
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Q2. What are your hobbies?
Ans. 
My hobbies include playing the guitar, hiking, and reading science fiction novels.
• Playing the guitar

• Hiking

• Reading science fiction novels
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Q1. What are the technologies used in your college project
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Q2. Java, Springboot
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Write the program to reverse the letters of the words in a sentence.