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Rulrapp Solutions Senior Software Engineer Interview Questions and Answers

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Senior Software Engineer Interview Questions

Cognizant

Anonymous

posted on 14 Dec 2024

Interview experience

Poor

Difficulty level

Moderate

Duration

2-4 weeks

Result

No response

I applied via Naukri.com and was interviewed in Nov 2024.

1 Interview Round

Technical Round (16 Questions)

Q1. What are custom hooks in React, and what are their use cases? Additionally, can you provide an example of a custom hook that performs an API call and utilizes t...read more
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Q2. What is the difference between useMemo and useCallback in React?
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Q3. What is the difference between class-based components and functional components in React?
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Q4. How can you implement the lifecycle of a React component in a functional component?
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Q5. What are the various state management techniques available in React?
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Q6. What is the architecture of Redux, and what purposes do middlewares serve within it?
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Q7. What is hoisting in JavaScript?
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Q8. What is event bubbling in JavaScript?
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Q9. What are block scope and function scope in JavaScript?
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Q10. Have you had experience working with semantic tags in HTML?
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Q11. What are the various methods for creating an object in JavaScript?
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Q12. What are the differences between shallow copy and deep copy in JavaScript?
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Q13. What will be the output of the following JavaScript code fragment: `const a; function test() { console.log(a); }; test();`?
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Q14. How can you use CSS to arrange elements in a row and column layout?
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Q15. Have you utilized CSS preprocessors, and if so, which ones?
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Q16. If I have assigned different colors to an ID and a class and applied both to the same element, which color will be applied based on CSS specificity precedence?
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Interview Preparation Tips

Topics to prepare for Cognizant Senior Software Engineer interview:

Javascript
React.Js
HTML
CSS

Interview preparation tips for other job seekers - Possessing a deep understanding of JavaScript and React is essential. Interviewers may engage in mind games with candidates; therefore, we should remain calm and focused solely on the questions. Additionally, we need to be confident in our answers; otherwise, they may respond with doubt, asking, "Is that so?"