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The global object provides a global namespace in Node.js.

The uncaughtException event is emitted for unhandled exceptions.

The fs module handles file system operations in Node.js.

process.env contains environment variables in Node.js.

The exit() method terminates the Node.js process.

The event loop handles asynchronous operations in Node.js.

The url module parses URL queries in Node.js.

require() imports modules in Node.js.

The listen event is emitted when a server starts listening.

The default port for a Node.js HTTP server is often 3000.

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