Velsera Associate Software Engineer Interview Questions and Answers

Regular DSA questions

Q1. All the fulls stack technologies
Ans. 
Full stack technologies refer to a combination of front-end and back-end technologies used to develop web applications.
• Front-end technologies include HTML, CSS, and JavaScript

• Back-end technologies include Node.js, Python, Ruby on Rails

• Database technologies like MySQL, MongoDB, PostgreSQL are also part of full stack development
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Q1. She told me about the company
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There were 2 coding questions asked based data structures and algo

Q1. Technical round was based on my work experience regarding the technologies
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Q2. What is virtual dom and explain how it works
Ans. 
Virtual DOM is a lightweight copy of the actual DOM in memory, used to improve performance by minimizing actual DOM manipulations.
• Virtual DOM is a concept used in frameworks like React to improve performance.

• When changes are made to the UI, the virtual DOM is updated instead of the actual DOM.

• The virtual DOM is then compared to the actual DOM, and only the differences are updated in the real DOM.

• This process reduces th...read more
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Q3. A virtual representation of the real dom
Ans. 
A virtual representation of the real dom is a digital model of a physical space or object.
• A virtual representation can be created using 3D modeling software.

• It can be used for simulations, virtual tours, or architectural visualization.

• Examples include virtual reality games, virtual museums, and virtual home tours.
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