L&T Technology Services Full Stack Developer Interview Questions and Answers

On campus aptitude test

Q1. About oops concepts and java questions
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Q1. Discussion about location and why virtusa
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Quantitative , figure ,mcq question based on tech stack and 2 coding question which are basic. 90 minute time limit.

Q1. Angular question
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Q2. .net question and sql question
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There is 30 aptitude test

There 2 coding problems

Q1. Describe Oops concepts in java
Ans. 
Oops concepts in Java are fundamental principles of object-oriented programming such as Inheritance, Polymorphism, Encapsulation, and Abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class.

• Polymorphism: Ability of an object to take on multiple forms.

• Encapsulation: Wrapping data and methods into a single unit.

• Abstraction: Hiding the implementation details and showing only the neces
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Q2. And some questions on the language
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Q3. About the project u have done
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Quantitive Aptitude, General programming,oops

GK, Quantitative Aptitude

C# Fundamentals , ADO.NET,LINQ

Q1. Why there are so frequent change.
Ans. 
Frequent changes in technology are driven by advancements, market demands, and user feedback.
• Advancements in technology lead to new tools and frameworks being developed.

• Market demands require companies to adapt quickly to stay competitive.

• User feedback helps improve products and services, leading to updates and changes.

• Examples: Introduction of new programming languages like Swift, shift towards cloud computing, update...read more
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Q2. Please tell me about your understanding with roll
Ans. 
Roll is a term used in web development to describe the process of deploying code changes to a live server.
• Rolling back changes means reverting to a previous version of the code.

• Rolling forward means applying new changes to the live server.

• Rolling deployments involve gradually updating servers in a controlled manner to minimize downtime.

• Automated rollbacks can be triggered in case of errors or issues during deployment.
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Q1. Explain architecture of project
Ans. 
The project architecture follows a microservices design pattern with separate front-end and back-end components.
• Utilizes microservices architecture for scalability and flexibility

• Separate front-end and back-end components for modularity

• May include technologies like Docker for containerization and Kubernetes for orchestration
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Q2. Async and await difference
Ans. 
Async and await are keywords in JavaScript used for handling asynchronous operations.
• Async is used to define a function as asynchronous, allowing it to use the await keyword.

• Await is used to pause the execution of an async function until a Promise is settled.

• Async functions always return a Promise, which resolves with the value returned by the function.

• Using async/await makes asynchronous code easier to read and write
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Q1. Tell me about yourself
Ans. 
I am a passionate Full Stack Developer with experience in building web applications using various technologies.
• Experienced in front-end technologies like HTML, CSS, JavaScript, and frameworks like React and Angular

• Proficient in back-end technologies like Node.js, Express, and databases like MongoDB and SQL

• Familiar with version control systems like Git and deployment tools like Heroku
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Q2. Do you have any quetion for me ?
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There are 4 coding questions in first round

Q1. Some basic statistics questions and data structure questions
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