TCS IT Analyst C2 Interview Questions, Process, and Tips

Basic aptitude questiond

Q1. SDLC abd DSA questions
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Q1. Advance questions wrt your domain
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Q2. Tell me about yourself
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Q1. Salary discussion and managerial round
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Q1. About laptops and desktop troubleshooting. MS Office troubleshooting
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Q1. Some basic and average questions was asked
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Q2. What is react. Some characterstics of react
Ans. 
React is a JavaScript library for building user interfaces.
• React is used for creating reusable UI components.

• It follows a component-based architecture.

• React uses a virtual DOM for efficient rendering.

• It supports server-side rendering.

• React is declarative, making it easier to understand and debug code.

• It has a large and active community with extensive documentation and support.
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Q3. What is useMemo and useCallback
Ans. 
useMemo and useCallback are hooks in React that optimize performance by memoizing values and functions.
• useMemo is used to memoize a value and prevent unnecessary re-computations.

• useCallback is used to memoize a function and prevent unnecessary re-renders.

• Both hooks are used to optimize performance in React applications.
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Q4. Some optimisation techniques
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Q5. Api calling in functional components
Ans. 
Calling APIs in functional components in React
• Use the useEffect hook to make API calls in functional components

• Use the fetch or axios library to make the actual API call

• Handle the API response using state or other hooks

• Consider using async/await or promises for handling asynchronous API calls
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