Quiz · 5 questions

📡 I/O and Networking

fs/promises, http, native fetch, WebSocket, file watchers

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01You need to atomically update a JSON config file that other processes also read. What's the canonical pattern?

02Inside an http.createServer handler, how do you read the request body in modern Node?

03Your fetch(url) got back a 404. What does the returned Promise do?

04You need the server to push updates to clients. When is WebSocket the right choice over Server-Sent Events (SSE)?

05Why does most dev tooling (Vite, Next.js dev) use the chokidar npm package instead of native fs.watch?

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