Capgemini Lead Engineer Interview Questions and Answers

Q1. Remove duplicates in an array
Ans. 
Use a hash set to remove duplicates in an array of strings
• Create a hash set to store unique elements

• Iterate through the array and add each element to the hash set

• Convert the hash set back to an array to get the unique elements
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Q2. What is react virtual DOM
Ans. 
React virtual DOM is a lightweight copy of the actual DOM, used for efficient updates and rendering in React applications.
• Virtual DOM is a concept where a lightweight copy of the actual DOM is created in memory.

• React uses virtual DOM to efficiently update and render components without directly manipulating the actual DOM.

• When changes are made to the virtual DOM, React calculates the most efficient way to update the act...read more
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Q3. React hooks with example
Ans. 
React hooks are functions that let you use state and other React features without writing a class.
• React hooks were introduced in React 16.8 to allow functional components to have state and lifecycle methods.

• useState() is a hook that allows you to add state to functional components.

• useEffect() is a hook that allows you to perform side effects in functional components.

• useContext() is a hook that allows you to use the con...read more
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Q1. Questions on core java concepts
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Q2. Questions on SQL and Springboot
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Q1. Questions on Collection framework.
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Q2. Questions on Springboot and core java
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Q1. Scenario based question
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Q2. Stream API questions
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Q1. What is the content of BOM
Ans. 
BOM stands for Bill of Materials, which is a comprehensive list of components, parts, and materials needed to manufacture a product.
• BOM includes detailed information about each component such as part number, description, quantity, and unit of measure.

• It helps in tracking and managing inventory, ordering materials, and estimating production costs.

• BOM can be hierarchical, with sub-assemblies listed under main components.

• ...read more
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Q2. How to draft through zuken
Ans. 
Drafting through Zuken involves using their software tools for creating and editing electronic designs.
• Use Zuken's software tools like CR-8000 or CADSTAR for drafting electronic designs

• Create schematics, layout designs, and PCB designs using Zuken's software

• Utilize features like auto-routing, design rule checks, and 3D visualization for efficient drafting

• Collaborate with team members by sharing and reviewing designs wi
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Q1. About your self
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Q2. About work experience
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Q1. Expected ctc lpa
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Q2. Notice period of it less than 90 or not
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Basic questions for aptitude genearal personl developing questions

Q1. What is react native
Ans. 
React Native is a framework for building mobile applications using JavaScript and React.
• Allows developers to write code once and deploy it across multiple platforms

• Provides access to native features and APIs of the device

• Supports hot reloading for faster development

• Used by companies like Facebook, Instagram, and Airbnb
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Q2. Diff use memo and use reducer
Ans. 
Memo is used for optimizing performance by caching the result of a function, while reducer is used for managing state in React applications.
• Memo is used to memoize the result of a function and prevent unnecessary re-renders.

• Reducer is used to manage state in React applications by updating the state based on actions.

• Memo can be used with useMemo hook in React to optimize performance.

• Reducer is typically used with useRed...read more
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Q1. Salary discussion
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Q2. Notice period about compnay
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30min online test. Easy level.

Q1. Technical interview with core concepts
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Q2. Conceptual , core knowledge.
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Q1. Managereal round
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Q1. Explain your skills
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Q2. Java phut hon spring boot
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