NeoSOFT Mern Full Stack Developer Interview Questions, Process, and Tips

Node.js uses an event-driven, non-blocking I/O model to handle concurrency.

• Node.js uses an event loop to handle multiple requests concurrently.

• It employs a single-threaded event loop that can handle thousands of concurrent connections.

• Node.js uses non-blocking I/O operations, allowing it to efficiently handle multiple requests without blocking the execution of other code.

• It utilizes callbacks and promises to handle asy...read more

useEffect and useMemo are hooks in React that allow for managing side effects and optimizing performance.

• useEffect is used to perform side effects in functional components, such as fetching data or subscribing to events.

• useMemo is used to memoize the result of a function, preventing unnecessary re-computations.

• Both hooks are part of the React Hooks API introduced in React 16.8.

Spread operator is used to unpack elements from an array, while rest operator is used to gather elements into an array.

• Spread operator is denoted by three dots (...) and can be used to spread the elements of an array into individual arguments.

• Rest operator is also denoted by three dots (...) and can be used to gather multiple elements into an array.

• Spread operator can be used in function calls, array literals, and obje...read more

React is a JavaScript library for building user interfaces. State is a JavaScript object that stores data in a component. useEffect is a React hook for handling side effects.

• React is a library for building UI components

• State is a JavaScript object that stores data within a component

• useEffect is a hook used for handling side effects in React components

Components are reusable and independent units of code that encapsulate functionality and can be combined to build larger applications.

• Components are the building blocks of a software application.

• They are reusable and can be used multiple times in different parts of the application.

• Components can have their own state and can communicate with other components through props.

• Examples of components include buttons, forms, n