React Js Cognizant Interview Questions
React.js Interview Questions for Cognizant
React Js Cognizant Interview Questions
React JS is a popular JavaScript library used for building user interfaces. It is known for its declarative nature, component-based architecture, and ability to create dynamic and interactive web applications. Cognizant is a major IT services and consulting company that uses React JS extensively in its projects. During Cognizant interviews, candidates may encounter questions related to React JS fundamentals, such as component lifecycle, state management, props, and the virtual DOM. They may also be asked about advanced concepts like hooks, context API, and performance optimizations. These questions assess the candidate's understanding of React JS and their ability to apply it effectively in real-world projects.
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1 - What are the key differences between React and Angular?
2) Explain the concept of Virtual DOM in React.
3) Discuss the lifecycle methods of React components.
4) How do you handle state management in React?
5) What are some common performance optimization techniques for React applications?
6) How do you create reusable components in React?
7) What are the advantages of using React Hooks?
8) Explain the difference between controlled and uncontrolled components.
9) How do you handle asynchronous operations in React?
10) What are the best practices for writing clean and maintainable React code?
11 - Discuss the role of Redux in React applications.
12) What is React Native and how does it differ from React?
13) How do you implement server side rendering in React?
14) What are some common pitfalls to avoid when using React?
15) How do you test React components effectively?
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- Course Overview
- Master the fundamentals and advanced concepts of React.js for your Cognizant interview. This comprehensive overview covers core principles, component structure, state management, hooks, testing, and best practices, equipping you to excel in technical discussions and demonstrate your proficiency in React.js.
- Course Description
- ‘React JS Cognizant Interview Questions’ is a comprehensive guide to preparing for technical interviews for React JS positions at Cognizant. Covering key concepts, interview patterns, and frequently asked questions, this course empowers candidates with the knowledge and skills to excel in their interviews and showcase their expertise in React JS.
- Key Features
- 1 - Comprehensive Tool Coverage: Provides hands-on training with a range of industry-standard testing tools, including Selenium, JIRA, LoadRunner, and TestRail.
- 2) Practical Exercises: Features real-world exercises and case studies to apply tools in various testing scenarios.
- 3) Interactive Learning: Includes interactive sessions with industry experts for personalized feedback and guidance.
- 4) Detailed Tutorials: Offers extensive tutorials and documentation on tool functionalities and best practices.
- 5) Advanced Techniques: Covers both fundamental and advanced techniques for using testing tools effectively.
- 6) Data Visualization: Integrates tools for visualizing test metrics and results, enhancing data interpretation and decision-making.
- 7) Tool Integration: Teaches how to integrate testing tools into the software development lifecycle for streamlined workflows.
- 8) Project-Based Learning: Focuses on project-based learning to build practical skills and create a portfolio of completed tasks.
- 9) Career Support: Provides resources and support for applying learned skills to real-world job scenarios, including resume building and interview preparation.
- 10) Up-to-Date Content: Ensures that course materials reflect the latest industry standards and tool updates.
Benefits of taking our course
Functional Tools
1 - React JS: A JavaScript library for building user interfaces, used in building interactive and responsive web applications.
2) Node.js: A JavaScript runtime environment for server side programming, allowing for the creation of fast and scalable applications.
3) Redux: A state management library for React, used for managing and organizing application state in a predictable and efficient manner.
4) Webpack: A module bundler for JavaScript applications, used for optimizing and packaging code for production deployment.
5) Babel: A JavaScript transpiler that converts newer JavaScript syntax into older, compatible syntax, enabling the use of modern JavaScript features in legacy browsers.
6) Jest: A testing framework for React applications, used for writing and running unit and integration tests to ensure code quality and stability.
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