Node.js · Middle · Question 16 of 75

What is a `Buffer`?

1A queue of pending promises
2A cache for HTTP responses
✓Correct answer: A fixed-length sequence of bytes, a subclass of Uint8Array

Explanation

Buffers hold binary data: file contents, network packets, images. Convert with buf.toString("utf8") or Buffer.from(text, "utf8").

Further reading

Node.js API: Buffer ↗

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