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IBM Reactjs Developer Interview Questions and Answers
IBM Reactjs Developer Interview Experiences
5 interviews found
Niharika Thakur
I applied via Company Website and was interviewed in Jun 2024. There were 2 interview rounds.
Got a link on mail to give online clearance test. 25 questions on react, Js and html-css
(1 Question)
- Q1. Build a login page
divya reddy
(2 Questions)
- Q1. Realted to React js
- Q2. Javascript basics
(1 Question)
- Q1. About salary discussion
Anonymous
I applied via Recruitment Consulltant and was interviewed in May 2024. There were 2 interview rounds.
MCQ based Questions were asked
(2 Questions)
- Q1. Do you follow CI/CD process?
- Ans.
Yes, I follow CI/CD process to automate testing and deployment.
I use tools like Jenkins, GitLab CI, or CircleCI to automate the build, test, and deployment process.
I write unit tests and integration tests to ensure code quality before deployment.
I regularly push code changes to version control and trigger automated builds and tests.
I use continuous integration to merge code changes frequently and detect issues early in
- Q2. What is CI/CD Process
- Ans.
CI/CD process is a software development practice that involves continuous integration, continuous delivery, and continuous deployment.
Continuous Integration (CI) involves automatically building and testing code changes frequently.
Continuous Delivery (CD) ensures that code changes are always in a deployable state.
Continuous Deployment (CD) automatically deploys code changes to production environments.
CI/CD helps in redu...
Skills evaluated in this interview
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Just MCQ questions related to React, Javascript, HTML, CSS
(1 Question)
- Q1. 1. Coding question in JS: Capitalize last letter of each word in a string. 2. React JS: Fetch data from some given API and store data in tabular form
- Ans.
Capitalize last letter of each word in a string and fetch data from API to display in tabular form using React JS.
Split the string into an array of words
Iterate through each word and capitalize the last letter
Join the words back together to form the modified string
Use React JS to fetch data from API and display in a tabular form
Skills evaluated in this interview
IBM interview questions for designations
Selected
I applied via Naukri.com and was interviewed in Apr 2023. There were 3 interview rounds.
There were 15 mcq questions from JS, React,HTML and CSS
(1 Question)
- Q1. Basic React and Javascript questions
Interview questions from similar companies
Saloni Ghag
I applied via Naukri.com and was interviewed in Dec 2024. There was 1 interview round.
(6 Questions)
- Q1. What is the difference between a development dependency and a regular dependency in software development?
- Ans.
Development dependencies are needed for development and testing, while regular dependencies are needed for the application to run.
Development dependencies are used during the development process, such as testing frameworks or build tools.
Regular dependencies are required for the application to function properly in production.
Development dependencies are typically listed in the devDependencies section of package.json, w...
- Q2. What do the symbols ^ and ~ represent in the package.json file?
- Ans.
Symbols ^ and ~ in package.json represent version ranges for dependencies.
The symbol ^ represents a range that allows minor version updates.
The symbol ~ represents a range that allows only patch updates.
For example, ^1.2.3 allows any version from 1.2.3 to <2.0.0, while ~1.2.3 allows any version from 1.2.3 to <1.3.0.
- Q3. How can a 404 page be handled in React routing?
- Ans.
404 page can be handled in React routing by creating a Route component with a path of '*' at the end of all other routes.
Create a Route component with a path of '*' at the end of all other routes in the Switch component.
Inside the '*' Route component, render a custom 404 page component.
Use the Switch component to ensure that only one Route is rendered at a time.
- Q4. Some Javascript coding questions.
- Q5. What is the component lifecycle in functional components?
- Ans.
Component lifecycle in functional components involves useEffect hook for side effects.
Functional components use useEffect hook to handle side effects like fetching data, subscribing to events, etc.
useEffect hook can be used to mimic componentDidMount, componentDidUpdate, and componentWillUnmount lifecycle methods.
useEffect hook takes a callback function as its first argument and an optional array of dependencies as its...
- Q6. Explain redux data flow
- Ans.
Redux data flow is a unidirectional flow of data in React applications using a centralized store.
Actions are dispatched to the store
Reducers update the state based on the action
Components subscribe to the store to access the updated state
Interview Preparation Tips
- Javascript
- React.Js
(2 Questions)
- Q1. React basic,event loop, Lazy Loading, Suspense, Javascript basics
- Q2. Create counter application
- Ans.
Counter application using Reactjs
Create a React component for the counter
Use state to keep track of the count
Implement functions to increment and decrement the count
Display the count on the screen
I applied via LinkedIn and was interviewed in Oct 2024. There was 1 interview round.
(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
- 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
- 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...
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in Nov 2024. There was 1 interview round.
(2 Questions)
- Q1. Technical and optimization techniques related
- Q2. Coding questions of java script
anjali rastogi
(1 Question)
- Q1. What is client side and server side rendering
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IBM Reactjs Developer Interview Process
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