Ring network
2
Fiber optic
Both Token Ring and FDDI use the concept of a ring topology structure. However, Token Ring is used in a LAN, and FDDI is used in a MAN.Token Ring is implemented with copper cable (UTP cable) and FDDI uses Fiber Optic cable.Finally, the protocols are very different between the two. FDDI uses a synchronous type of transmission, where Token Ring uses an actual token (a 3 character packet) to control who has access to transmit or receive on the network. FDDI does not use this technique.
The acronym FDDI stands for Fiber Distributed Data Interface, which provides enhanced data transmission in a local area network.
FDDI
primary and secondary so it has "2"
Fddi can be further connected to other networks whereas token ring is individual network of computers.
Token Ring and FDDI networks can.
Fiber Distributed Data Interface (FDDI) NICs are commonly used to connect host systems or file servers to FDDI network equipment using one connectin (single attachment) and to attach the network equipment to the FDDI cabling through two attachments (dual attachment). FDDI is defined by the ANSI X3T9.5 standards committee and provides an access method to enable high-capacity data throughput on busy networks. It has a data throughput rate of 100Mbps, and is simliar to the token ring access method because it uses token passing for network communication.
FDDI is a dual-ring structure, usually found in MANs (metropolitan area networks). Although it has a physical ring structure it is not the same as a token ring network.
FDDI Advantages: ~Supports real time allocation of network bandwidth. ~Supports a lot of different types of network traffic. ~Is fault-tolerant because it uses dual fiber cables. If one cable fails FDDI moves the data to the other dual cable. FDDI Disadvantages: ~It's expensive ~There is always a chance of multiple ring failures and as the ring grows, that chance increases. ~It's not used frequently due to cost, companies prefer to use copper (CDDI) if they are taking the ring approach.