VAYUZ Technologies Intern Interview Questions and Answers

All coding questions were ad hoc

Q1. Leetcode questions were asked
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Q2. A question about cache memory was asked
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Q1. DSA Questions Based on Language Know.
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Q2. Questions Realted to Skills
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Q1. What is supervised learing
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Q2. What is mse
Ans. 
MSE, or Mean Squared Error, is a common metric used to measure the average squared difference between predicted and actual values.
• MSE is calculated as the average of the squares of the errors: MSE = (1/n) * Σ(actual - predicted)².

• A lower MSE indicates a better fit of the model to the data.

• For example, if actual values are [3, -0.5, 2] and predicted values are [2.5, 0.0, 2], MSE = (1/3) * ((3-2.5)² + (-0.5-0)² + (2-2)²)...read more
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Q1. Tell us about a project you've worked on using the MERN stack.
Ans. 
Developed a task management application using the MERN stack to streamline team collaboration and project tracking.
• Utilized MongoDB for database management, storing user tasks and project details.

• Implemented Express.js to create RESTful APIs for task CRUD operations.

• Used React.js for building a responsive user interface, allowing users to add, edit, and delete tasks seamlessly.

• Incorporated Node.js for server-side logic...read more
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Q2. How do you manage routes in a MERN stack application?
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Managing routes in a MERN stack involves defining API endpoints and client-side routes for seamless navigation and data handling.
• Use Express.js for backend routing: Define routes in a separate file, e.g., 'routes/user.js'.

• Implement RESTful API conventions: Use GET, POST, PUT, DELETE methods for CRUD operations.

• Utilize React Router for client-side routing: Set up routes in 'App.js' using <BrowserRouter> and <Ro...read more
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Q1. React hooks related How to use them
Ans. 
React hooks are functions that let you use state and lifecycle features in functional components.
• useState: Allows you to add state to functional components. Example: const [count, setCount] = useState(0);

• useEffect: Lets you perform side effects in function components. Example: useEffect(() => { document.title = `Count: ${count}`; }, [count]);

• useContext: Provides a way to pass data through the component tree without ...read more
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Q2. About web socket real time messaging
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Q3. About react router dom
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Q1. Where do you see yourself after 5 years.
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Q2. What's your weakness
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Q1. What is the main difference btwn java and java script?
Ans. 
Java is a programming language used for building applications, while JavaScript is a scripting language primarily for web development.
• Java is a statically typed, compiled language; JavaScript is a dynamically typed, interpreted language.

• Java is used for server-side applications (e.g., Spring framework); JavaScript is used for client-side scripting (e.g., React, Angular).

• Java code is written in .java files and compiled ...read more
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Q2. Differentiate thread and process
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Q1. Basic of web development
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Q2. Basic of web development-html,css,js
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