Networking
QUIC
A UDP-based transport with per-stream reliability, a merged transport/crypto handshake, and connection migration by connection ID.
Why interviewers ask about it
1-RTT setup (0 on resumption), no cross-stream head-of-line blocking, and survives a phone switching from Wi-Fi to cellular. Mention that UDP is blocked on some networks, so fallback is mandatory.
Related terms
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