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Quadb Tech Reactjs Developer Interview Questions and Answers

Updated 27 Feb 2024

Quadb Tech Reactjs Developer Interview Experiences

1 interview found

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. Basic html css and react questions

Interview questions from similar companies

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. Alternative way for prop drilling
  • Ans. 

    Context API or Redux can be used as alternative ways for prop drilling in React.

    • Use Context API to pass data down the component tree without having to manually pass props at every level.

    • Implement Redux to manage global state and access data from any component without prop drilling.

    • Consider using React's useContext hook with Context API for a simpler way to consume context in functional components.

  • Answered by AI
Round 2 - Technical 

(1 Question)

  • Q1. Asked four programs
Round 3 - HR 

(1 Question)

  • Q1. Salary discussion

Skills evaluated in this interview

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I appeared for an interview in Sep 2023.

Round 1 - Technical 

(2 Questions)

  • Q1. Basic Javascript Questions
  • Q2. JS Array Questions

Interview Preparation Tips

Topics to prepare for LTIMindtree Reactjs Developer interview:
  • javascript
  • arrays
  • array functions

I applied via Naukri.com and was interviewed in Aug 2021. There were 4 interview rounds.

Interview Questionnaire 

5 Questions

  • Q1. Html - Form, meta tags
  • Q2. Css - Grid box.
  • Q3. How do you make a page responsive. Bootstrap layouts and alerts
  • Ans. 

    To make a page responsive, use Bootstrap layouts and alerts.

    • Use Bootstrap's grid system to create responsive layouts

    • Use media queries to adjust the layout based on screen size

    • Use Bootstrap's responsive utility classes to hide/show elements on different devices

    • Use Bootstrap's responsive navigation components for mobile-friendly menus

    • Use Bootstrap's responsive images to ensure they scale properly

    • Use Bootstrap's responsiv...

  • Answered by AI
  • Q4. Javascript array based questions
  • Q5. Questions from redux, hook, use state, UseEffect

Interview Preparation Tips

Interview preparation tips for other job seekers - I had a call from Accenture HR asking my interest for the role. Three rounds - 1st is mcq which had 30 questions for 35min. Moderate to tough.
Second round is technical interview, took around 2 hours. Totally exhausted after 1st hour. Interviewer asked to write few codes in the live code share screen. The process is completed in a week

Skills evaluated in this interview

Interview Questionnaire 

1 Question

  • Q1. Asked to write a general reusable form component in Reactjs, fields should be dynamic and inputs to the form should get displayed as table format.
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. What do you mean by redux and how to use redux
  • Ans. 

    Redux is a predictable state container for JavaScript apps. It helps manage the state of an application in a more organized way.

    • Redux is a state management tool commonly used with React to manage the state of an application.

    • It follows a unidirectional data flow, where the state is stored in a single store.

    • Actions are dispatched to update the state, and reducers specify how the state should change in response to actions...

  • Answered by AI
  • Q2. What is the use of Context Api in React
  • Ans. 

    Context API is used in React to pass data through the component tree without having to pass props down manually at every level.

    • Avoids prop drilling by providing a way to share values like themes, user data, etc. across the component tree.

    • Helps in managing global state in React applications.

    • Context API consists of Provider and Consumer components to provide and consume the context data.

    • Can be used for theming, localizat

  • Answered by AI

Skills evaluated in this interview

I applied via LinkedIn and was interviewed in Jun 2021. There was 1 interview round.

Interview Questionnaire 

4 Questions

  • Q1. What is hoisting ?
  • Ans. 

    Hoisting is a JavaScript mechanism where variables and function declarations are moved to the top of their scope.

    • Variables declared with var are hoisted to the top of their scope

    • Function declarations are hoisted before variables

    • Function expressions are not hoisted

    • Hoisting can lead to unexpected behavior and bugs

  • Answered by AI
  • Q2. What is useEffect ?
  • Ans. 

    useEffect is a hook in React that allows you to perform side effects in functional components.

    • It replaces componentDidMount, componentDidUpdate, and componentWillUnmount.

    • It takes two arguments: a function that performs the side effect and an array of dependencies.

    • The function is called after every render, unless the dependencies haven't changed.

    • Common use cases include fetching data, setting up event listeners, and upd...

  • Answered by AI
  • Q3. What is function currying
  • Ans. 

    Function currying is a technique of transforming a function that takes multiple arguments into a sequence of functions that each take a single argument.

    • Currying allows partial application of a function.

    • It helps in creating reusable functions.

    • Curried functions are composable and can be easily combined to create new functions.

    • Currying can be achieved using closures or by using libraries like Lodash or Ramda.

    • Example: cons

  • Answered by AI
  • Q4. What is closures in js
  • Ans. 

    Closures are functions that have access to variables in their outer scope, even after the outer function has returned.

    • Closures are created when a function is defined inside another function.

    • The inner function has access to the outer function's variables and parameters.

    • Closures can be used to create private variables and methods.

    • Closures can also be used to create functions with pre-set arguments.

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Only a single round which lasted for almost 30 min. It was relatively easy one with basic qns on javascript

Skills evaluated in this interview

I applied via Naukri.com and was interviewed in Apr 2022. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. I gave technical interview with Accenture for react js developer. They asked questions majorly related to software development like session storage, Server side rendering Url Constructor Saas Web workers...

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare for basics more. Javascript specific questions were minimal most of them were related to core concepts only.
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I applied via LinkedIn and was interviewed in Oct 2024. There was 1 interview round.

Round 1 - Technical 

(3 Questions)

  • Q1. What are the advantages of React
  • Ans. 

    React offers advantages such as virtual DOM for improved performance, reusable components, and easy integration with other libraries.

    • Virtual DOM for efficient updates and improved performance

    • Reusable components for easier development and maintenance

    • Easy integration with other libraries like Redux for state management

    • Support for server-side rendering for better SEO performance

  • Answered by AI
  • Q2. How the performance optimization can be done in React Js Application
  • Ans. 

    Performance optimization in React Js can be achieved through code splitting, memoization, virtualization, and minimizing re-renders.

    • Implement code splitting to load only necessary components when needed

    • Use memoization techniques like useMemo and useCallback to prevent unnecessary re-renders

    • Implement virtualization for long lists or tables to render only visible items

    • Minimize re-renders by using shouldComponentUpdate or

  • Answered by AI
  • Q3. What is the purpose of useMemo and UseCallBack hook
  • Ans. 

    useMemo and useCallback are hooks in React used for optimizing performance by memoizing values and functions respectively.

    • useMemo is used to memoize the result of a function so that it is only recomputed when its dependencies change.

    • useCallback is used to memoize a function instance so that it is not recreated on every render unless its dependencies change.

    • Both hooks help in optimizing performance by preventing unneces...

  • Answered by AI

Skills evaluated in this interview

Interview Questionnaire 

3 Questions

  • Q1. What are the new features in react 16?
  • Ans. 

    React 16 introduced new features like React Fiber, Error Boundaries, Portals, and improved server-side rendering.

    • React Fiber is a new reconciliation engine that improves performance and enables incremental rendering.

    • Error Boundaries allow developers to catch and handle errors in components.

    • Portals provide a way to render children into a different DOM subtree.

    • Improved server-side rendering with support for streaming and...

  • Answered by AI
  • Q2. Why react hooks are use full?
  • Ans. 

    React hooks simplify state management and lifecycle methods in functional components.

    • Hooks allow functional components to have state and lifecycle methods

    • They reduce the need for class components and HOCs

    • Hooks make code more readable and easier to test

    • Examples of hooks include useState, useEffect, and useContext

  • Answered by AI
  • Q3. What is HOC components?
  • Ans. 

    HOC components are higher-order components in React that allow code reuse and logic sharing.

    • HOC components are functions that take a component and return a new component with additional functionality.

    • They are used to abstract common logic and behaviors into reusable components.

    • HOC components can be used for tasks like authentication, logging, and code reuse.

    • Example: a withAuth HOC component that adds authentication log

  • Answered by AI

Skills evaluated in this interview

Quadb Tech Interview FAQs

How many rounds are there in Quadb Tech Reactjs Developer interview?
Quadb Tech interview process usually has 1 rounds. The most common rounds in the Quadb Tech interview process are Technical.

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