BACFO Senior Software Developer Interview Questions and Answers

Q1. What is the Virtual DOM?
Ans. 
Virtual DOM is a lightweight copy of the actual DOM in memory, used for efficient updates in web development.
• Virtual DOM is a concept in React where a lightweight copy of the actual DOM is kept in memory.

• Changes are first made to the Virtual DOM, then compared with the actual DOM to minimize updates.

• This approach improves performance by reducing the number of direct manipulations to the actual DOM.
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Q2. How can we optimize the code in front end ?
Ans. 
Optimizing front end code involves minimizing file sizes, reducing HTTP requests, using efficient algorithms, and implementing lazy loading.
• Minimize file sizes by removing unnecessary code, compressing images, and using minification tools like UglifyJS.

• Reduce HTTP requests by combining CSS and JavaScript files, using sprites for images, and implementing caching strategies.

• Use efficient algorithms and data structures to...read more
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Q1. Why we use use effect and how will you implement the search feature
Ans. 
useEffect is used in React to perform side effects in function components. Implement search feature by using useEffect to update search results.
• useEffect is used to perform side effects in function components, such as data fetching, subscriptions, or manually changing the DOM.

• To implement search feature, you can use useEffect to update search results whenever the search query changes.

• Example: useEffect(() => { // co
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Q2. Usememo and use callback, useref, use statehooks
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Q1. Background verification and CTC expectations
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Q1. Nothing I am not happy at all
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Q2. Nothing and I am not happy at alll
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The coding test was on HackerRank Plateform

Q1. Then Face to Face Technical Discussion happened, It involves basic but in-depth Programming.
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Q1. Managerial Round is there, based on Scenario based Questions
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Q1. General Introduction related Questions
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General question and programmatic, oopa data structure

Any program of python or java , c

Q1. Any of technical questions
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Q1. Any of questions like programatic etc
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