sentence: Some rings send traffic in only one direction, other ring networks send traffic in both directions.
sentences_before: A ring topology means that each device talks to two other devices in the network and the devices all talk in a circle. If a computer sends data out one of its interfaces, it could get an answer back on the other one.
sentences_after: Token Ring and FDDI are examples of ring topologies.
concept_name: ring
headings: Local area network
categories: Computer networking