Which statement about QUIC is true?

• A. QUIC is built on top of TCP to provide reliability
• B. QUIC is a transport protocol over UDP with built-in encryption, multiplexing streams, and faster connection establishment
• C. QUIC is a VPN protocol for securing data
• D. QUIC is a hardware protocol used in routers

Answer: (B)

QUIC is a transport protocol that runs over UDP and brings together built-in encryption, multiplexed streams, and faster connection establishment. This combination is designed to address common TCP limitations: encryption and security are built into the protocol itself (TLS 1.3 is integrated), multiple data streams can share a single QUIC connection without blocking each other, and the connection can be established with fewer round-trips because the cryptographic and transport handshakes are combined. Running over UDP lets QUIC implement these features in user space, which also enables quicker iteration and improvements while avoiding some of TCP’s rigid constraints. It’s not a VPN protocol, nor a hardware protocol used in routers, and it isn’t built on TCP.