Smart Brains Engineers And Technologist Interview Questions and Answers

Q1. Difference between useMemo and useCallback ?
Ans. 
useMemo is used to memoize a value, while useCallback is used to memoize a function.
• useMemo is used to memoize a computed value and recompute it only when its dependencies change.

• useCallback is used to memoize a callback function and prevent unnecessary re-renders.

• Example: useMemo can be used to memoize the result of a complex computation, while useCallback can be used to memoize an event handler function.
Answered by AI
Add your answer
Q2. How we do error handling in js ?
Ans. 
Error handling in JavaScript involves using try-catch blocks, throwing errors, and using error objects.
• Use try-catch blocks to catch errors and handle them gracefully

• Throw errors using the throw keyword to indicate when something goes wrong

• Use error objects like Error, SyntaxError, TypeError, etc. to provide more information about the error

• Handle asynchronous errors using promises and the .catch() method
Answered by AI
Add your answer
Q3. What is Promises ? Write a Polyfill of Promise.all()
Ans. 
Promises are objects representing the eventual completion or failure of an asynchronous operation.
• Promises are used to handle asynchronous operations in JavaScript.

• Promise.all() takes an array of promises and returns a single promise that resolves when all of the input promises have resolved.

• A polyfill for Promise.all() can be implemented using a combination of Promise and Array.prototype.reduce().
Answered by AI
Add your answer

Frontend assignment make the CRUD application using of reactj.s

Q1. Sales experience
Ans. 
I have 3 years of sales experience in a previous role, where I successfully met and exceeded sales targets.
• Demonstrate ability to build relationships with clients

• Highlight experience in meeting and exceeding sales targets

• Discuss any specific sales strategies or techniques used
Answered by AI
Add your answer
Q2. Edtech experience
Ans. 
I have extensive experience with various educational technologies, including online learning platforms and interactive whiteboards.
• Implemented online learning platforms to enhance student engagement

• Utilized interactive whiteboards for interactive lessons

• Trained teachers on how to effectively integrate technology into their curriculum
Answered by AI
Add your answer
Q3. What's your highest education
Add your answer
Q4. What are your dreams and goals
Add your answer
Q5. Where do you see yourself in another 5 years
Add your answer

Q1. Tell about data structure
Ans. 
Data structure is a way of organizing and storing data in a computer so that it can be accessed and modified efficiently.
• Data structures include arrays, linked lists, stacks, queues, trees, graphs, etc.

• They are essential for efficient algorithms and problem-solving.

• Example: An array is a data structure that stores a collection of elements in contiguous memory locations.
Answered by AI
Add your answer
Q2. What is aaray and its types
Ans. 
An array is a data structure that stores a collection of elements of the same type. There are different types of arrays like one-dimensional, two-dimensional, and multi-dimensional arrays.
• One-dimensional array: Stores elements in a single row or column.

• Two-dimensional array: Stores elements in rows and columns.

• Multi-dimensional array: Stores elements in more than two dimensions.

• Example: ['apple', 'banana', 'orange']
Answered by AI
Add your answer

Find largest element

Q1. Introduce yourself and research paper publications Details
Add your answer

Q1. What is your favourite movie
Add your answer
Q2. Tell me about your family
Add your answer

Do you consider online shopping or offline shopping which one will you support and why

Q1. Why do you like to join in our company
Add your answer