FDDI Media
FDDI signifies a 100 Mbps token-passing dual-ring LAN that uses a fiber-optic transmission medium.
Even though it operates at faster speeds FDDI is similar to Token Ring.
The two networks share some features such like topology (ring) and media access technique (token-passing). A characteristic of FDDI is its utilization of optical fiber as a transmission medium.
Optical fiber is exploding in popularity like a networking medium being installed at a rate of 4000 miles per day in the United States.