The Complete Handshake

Graduation. Part of the Quantum Courier Service, a free course from the Oxford University Quantum Information Society.

One last job before we let you off the leash, Agent.

This isn't a module checkpoint. It's the whole file, cross-examined. Twelve scenarios, each one pulling together two or three ideas from across the entire mission: bits and noise, superposition and collapse, bases and forgery, entanglement and no-signaling, BB84 and its arithmetic, teleportation's cut-and-paste, and the repeater network holding it all together at planetary scale.

Seventy-five percent to pass. No hints, no partial credit for vibes. Either you can explain why, or you can't. Clear it, and the certificate is yours.