Fiber Distributed Data Interface (FDDI) is a norm for information transmission in a local area network. It is accessible in huge LANs that can reach out as much as 200 kilometers in diameter. FDDI utilizes optical fiber as its physical medium. It works in the physical and medium access control (MAC layer) of the Open Systems Interconnection (OSI) network model. It gives a high data rate of 100 Mbps and can uphold a large number of clients.