Computers decide when network is not busy and communicates data as needed. Bus computers listen to transmissions from other computers and do not forward or echo transmissions to other computers Weakness Limited cable length and number of stations, If there is a problem with the cable, the entire network goes down, Low security Strengths Requires less cable length than a star topology, Flexible Ring In a ring network, every device has exactly two neighbors for communication purpose. All messages travel through a ring in the same direction, either clockwise or counterclockwise.
A failure in any cable or device breaks the loop and can take down the entire network. To implement a ring network, one usually uses FDDI, sonet, or Token Ring technology. Ring topologies are found in some office buildings or school campuses. Strengths All devices have equal access. Adding additional nodes has very little impact on bandwidth . Weakness Data packets must pass through every computer between the sender and recipient Therefore this makes it slower. It is difficult to troubleshoot the ring.