Socket.IO quiz

Test your Socket.IO knowledge with a free interactive quiz — 23 questions with answers and explanations. No signup needed to play.

How do you leave a room?

1. How do you leave a room?
2. What data is available in `socket.handshake`?
3. What is a common real-world use case for Socket.IO?
4. How do you listen for an incoming event on the server?
5. What is Socket.IO middleware used for?
6. What is a Socket.IO "room"?
7. How does Socket.IO relate to the native WebSocket protocol?
8. What does `io.emit()` (without targeting a specific room or socket) do?
9. What is a Socket.IO "namespace"?
10. What is Socket.IO?
11. How do you broadcast an event to all connected clients except the sender?
12. How do you emit a custom event from the server to a connected client?

More quizzes