Protocol
A specific set of communication rules is called a protocol. When computers communicate with each other, there needs to be a common set of rules and instructions that each computer follows.
FDDI
FDDI Stands for “Fiber Distributed Data Interface”. It is a set of ANSI and ISO standards for data transmission on fiber optic lines in a local area network (LAN) that can be extended in a range up to 200 km (124 miles). The FDDI is the token ring protocol and it includes two token rings, one for possible backup in case the primary ring fails. The primary ring offers up to 100 Mbps capacity. If the secondary ring is not needed for backup, it can also carry data, extending capacity to 200 Mbps. This one ring can extend the maximum distance; a dual ring can extend 100 km (62 miles). In addition to being large geographically, an FDDI local area network can support thousands of users. FDDI is frequently used on the backbone for a wide area network (WAN).
Where is FDDI used?
It’s used to control the high traffic networks and large amounts of data flow in quickly and efficiently. FDDI can be used anywhere that utilizes a large network in need of high bandwidth. Businesses, the Government, hospitals, and other medical fields, stock exchanges and money markets, the automobile industry, and the media etc. It has become the mainstay access method of high-speed networking in the local area and metropolitan area networks in many places.