CompTIA Security+ Exam Prep

Answer: A - The Fiber Distributed Data Interface (FDDI) was developed by the American National Standards Institute as high-speed token-passing media accessing across technology. FDDI has a data transmission speed of up to 100 Mbps and is usually used as a backbone network using fiber-optic cabling. It also provides fault tolerance by offering a second counter-rotating fiber ring. The primary ring has data traveling clockwise and is used for regular data transmission. The second ring transmits data in a counterclockwise fashion and is invoked only if the primary ring goes down. Sensors watch the primary ring and if it goes down, they invoke a ring wrap so the data will be diverted to the second ring. Each node on the FDDI network has relays that are connected to both rings, so if a break in the ring occurs, the two rings can be joined.