Interview Q&A / Node.js
Node.js interview questions
The event loop on the server, streams, modules and building APIs with Express.
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- What is a Buffer in Node.js and why does it exist?
A Buffer is a fixed-size chunk of raw memory holding bytes. Node uses it for binary data such as files, network packets and images, because JavaScript strings are meant for text, not raw bytes.
BeginnerQuick answer1 min read