What is the most common FDDI cabling system?

The most common FDDI (Fiber Distributed Data Interface) cabling system uses multimode fiber optic cables, specifically 62.5/125 µm or 50/125 µm fiber. This system typically employs a dual-ring topology, allowing for redundancy and fault tolerance in the network. FDDI supports data rates of up to 100 Mbps and is often used for backbone installations in local area networks (LANs). Additionally, FDDI cables are terminated with SC or ST connectors.