Advantages and disadvantages of the Fiber Distributed Data Interface FDDI?

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.