Infosys Technical Lead Interview Questions, Process, and Tips

Q1. Previous experience
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Q1. About previous experience
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Q1. Say about urself
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Q2. Explain the project and more relevant questions
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Q1. Reason for change
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Q1. What is lazy loading in React?
Ans. 
Lazy loading in React is a technique to load components only when they are needed, improving performance and reducing initial load time.
• Improves performance by splitting code into smaller chunks.

• Components are loaded only when they are rendered for the first time.

• Implemented using React's `React.lazy()` and `Suspense`.

• Example: `const LazyComponent = React.lazy(() => import('./LazyComponent'));`

• Wrap lazy-loaded compo...read more
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Q2. What are the different types of hooks and their uses?
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Hooks are functions that let you use state and lifecycle features in React components without writing a class.
• useState: Allows functional components to manage state. Example: const [count, setCount] = useState(0);

• useEffect: Enables side effects in functional components. Example: useEffect(() => { document.title = `Count: ${count}`; }, [count]);

• useContext: Provides a way to share values between components without pro...read more
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Q1. Springboot application desgin questions. How I will create spring boot project for desiginng an application
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Q2. RestAPI related questions. Different scenarios given, how would I write APIs. What things I would consider
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Q1. What are the design patterns and which design pattern used in your project?
Ans. 
Design patterns are reusable solutions to common problems in software design. Examples include Singleton, Factory, and Observer.
• Design patterns are solutions to common problems in software design

• They help in creating reusable and maintainable code

• Examples include Singleton, Factory, Observer, and Strategy patterns
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Q2. Difference between abstact and interface?
Ans. 
Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
• Abstract class can have constructors, fields, and methods, while interface cannot have any implementation.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Abstract classes are used to define a common behavior for subclasses, while interfaces are used to define a contract f...read more
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Processing of large files with error handling. Questions on Thread management and performance management.