Optimal Virtual Employee Mern Full Stack Developer Interview Questions and Answers

Q1. Do you have an internship opportunity for a Full-stack Developer(Fresher)?
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Q1. Is the internship for a full-stack developer paid?
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Q1. How many years is the internship for a full-stack Developer?
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Q1. What are microservices according to you?
Ans. 
Microservices are a software development technique where an application is divided into smaller, independent services that communicate with each other through APIs.
• Microservices are small, independent services that focus on specific business functions.

• Each microservice can be developed, deployed, and scaled independently.

• Microservices communicate with each other through APIs, typically using lightweight protocols like ...read more
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Q2. Explain Microservices Architecture used in your project
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Microservices architecture is a design approach where a single application is composed of small, independent services that communicate with each other.
• Each microservice is responsible for a specific business function or capability

• Microservices communicate with each other through APIs

• Each microservice can be developed, deployed, and scaled independently

• Microservices architecture promotes flexibility, scalability, and re
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Q3. How are 4-5 microservices connected in rest api's? which technique you are using?
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Microservices are connected in REST APIs using communication protocols like HTTP, messaging queues, and service discovery.
• Microservices communicate with each other using HTTP requests and responses.

• Messaging queues like RabbitMQ or Kafka can be used for asynchronous communication between microservices.

• Service discovery tools like Eureka or Consul help in locating and connecting to different microservices.

• API Gateway ca...read more
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Q4. Coding question - 1. Create a immutable class of orders. What happens when two objects are created out of it. 2.Using the immutable orders create a set of orders and how will you sort these out. 3.Given ...read more
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Creating immutable class of orders, sorting orders, finding average of lists of integers.
• Create an immutable class Orders with private final fields and no setter methods.

• Override equals() and hashCode() methods to ensure uniqueness of objects.

• Use Collections.unmodifiableSet() to create a set of orders and Collections.sort() to sort them.

• Iterate through the List of List of String of integers, convert to integers, and ca
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Q1. Explain Spring Cloud and how you are using in microservices?
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Spring Cloud is a set of tools and frameworks for building cloud-native applications in Java.
• Spring Cloud provides tools for service discovery, load balancing, configuration management, and more in microservices architecture.

• It includes projects like Eureka for service discovery, Ribbon for client-side load balancing, and Config Server for externalized configuration.

• Spring Cloud integrates with Spring Boot to simplify ...read more
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Q2. Explain your deployment build config?
Ans. 
Deployment build config includes settings for deploying the application.
• Use tools like Maven or Gradle to manage dependencies and build the project

• Specify deployment environment configurations in a separate file (e.g. application.properties)

• Define build scripts for tasks like compiling, packaging, and deploying the application

• Leverage CI/CD pipelines for automated builds and deployments
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Q1. Explain your project?
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Q2. Your expectations from the company
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Given a project, you need to create logic for a service using helpers and finally give a aggregate of the final converted price .

Given few java 8 programming functions, you need to convert them to respective java 11 functions

Q1. React common questions
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Q2. Spring boot and microservices questions
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Q3. Sql questions like second highest salary
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Q4. Java streams interview questions like second highest
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Good morning sir have a you sir my name is hemant Ramchandra narkhede

Java script simple frame

Q1. What are the different data types present in javascript?
Ans. 
JavaScript has several data types including string, number, boolean, object, function, undefined, and null.
• String: 'hello', '123'

• Number: 123, 3.14

• Boolean: true, false

• Object: { key: 'value' }

• Function: function() { }

• Undefined: undefined

• Null: null
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Q2. Difference between var and let keyword in javascript.
Ans. 
var is function-scoped while let is block-scoped in JavaScript.
• var keyword is function-scoped, meaning it is accessible throughout the function it is declared in.

• let keyword is block-scoped, meaning it is only accessible within the block it is declared in.

• Using var can lead to variable hoisting issues, while let provides more predictable behavior.

• let allows for better variable scoping and reduces the risk of unintended
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Q1. What are the advantages of pair programming?
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Pair programming promotes collaboration, knowledge sharing, and code quality.
• Enhances code quality through immediate code review and feedback

• Promotes knowledge sharing and learning from each other

• Fosters collaboration and teamwork

• Reduces the likelihood of bugs and errors

• Increases productivity by leveraging two minds on the same problem

• Helps in breaking down complex problems into smaller tasks

• Improves communication skil
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Q2. How do you handle constructive feedback about your full-stack development projects?
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Q1. How do you identify bugs in your code?
Ans. 
I use a combination of manual testing, unit testing, and debugging tools to identify bugs in my code.
• Perform manual testing by running the code and checking for any unexpected behavior or errors.

• Write unit tests to verify the functionality of individual components and catch any issues early on.

• Utilize debugging tools like breakpoints, logging, and stack traces to track down the root cause of bugs.

• Collaborate with team ...read more
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Q2. How long have you been coding primarily in Python?
Ans. 
I have been coding primarily in Python for 5 years.
• I started learning Python in college and have been using it extensively in my professional career.

• I have worked on various projects using Python, including web development, data analysis, and automation.

• I am proficient in Python libraries such as NumPy, Pandas, and Django.
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HR round full stack developer experience

Best atitude round questions

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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Q1. Duplicate value in a array
Ans. 
Finding duplicate values in an array of strings
• Iterate through the array and store each element in a hash set

• If an element is already in the hash set, it is a duplicate

• Return the duplicate values found
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Q1. Generators In Javascript
Ans. 
Generators in JavaScript are functions that can be paused and resumed, allowing for asynchronous programming.
• Generators are defined using function* syntax.

• They use the yield keyword to pause execution and return a value.

• Generators can be iterated over using a for...of loop.

• They are commonly used for asynchronous operations and managing state.
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Q2. Flatten a array without using inbuild functions
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Flatten an array without using inbuilt functions
• Create a recursive function to iterate through the array elements

• Check if each element is an array, if so, call the function recursively

• Concatenate the elements into a new array
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Regarding To My Full Stack

Regarding To My Full Stack

Q1. What Is Python And Discuss With Some Questions
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Q2. In that Case Studies
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