ValueLabs Interview Questions, Process, and Tips

Q1. Longest common substring in an array
Ans. 
Find the longest common substring in an array of strings.
• Iterate through each string in the array and compare with all other strings to find common substrings.

• Keep track of the longest common substring found so far.

• Return the longest common substring at the end.
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Q1. Explain Virtual DOM in React
Ans. 
Virtual DOM in React is a lightweight copy of the actual DOM, used for efficient updates and rendering.
• Virtual DOM is a concept where a lightweight copy of the actual DOM is created in memory.

• When changes are made to the UI, React compares the Virtual DOM with the actual DOM to identify the differences.

• React then updates only the necessary parts of the actual DOM, minimizing the number of DOM manipulations for better p...read more
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Q2. How to optimise a React application
Ans. 
Optimising a React application involves code splitting, lazy loading, using memoization, reducing unnecessary re-renders, and optimizing network requests.
• Implement code splitting to load only necessary code for each route or component.

• Use lazy loading to load components only when they are needed, reducing initial load time.

• Utilize memoization techniques like useMemo and useCallback to prevent unnecessary re-renders.

• Avo...read more
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Q1. Jmeterand performance testing basics
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Q1. Project based questions with the client
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Q1. Salary discussion
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Q1. Threading kotlin
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Q2. Play services security
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Q1. Starting from core java all the technologies mentioned in the resume were covered based on your experience
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Q2. Polite and relavant answers would help to crack the interview
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Q1. Some technical and managerial questions based on your experience
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Q1. Questions on previous project , framework , gave a scenario and asked me to write dynamic xpath , program on string and about oops
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Q1. About my project and framework , Interface and abstract class differences , difference between implicit wait and explicit wait
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Q1. How do you Handle Iframe, Automate Amazon website. Question in Implicit and Explicit Wait AI ML
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SQL Query Automation REST API

Q1. Was More interested in API testing
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