[Isabelle Tubbs]

Ring topologies allow computers to connect with a transmission link headed in one direction, allowing the cable to operate in a closed loop. The problem with ring topologies is that if one of the stations experiences an issue, it could affect the rest of the computers that are on the ring in a negative way. To take action against this problem, a security officer can implement a dual concentric ring, which leaves some room open for one terminal to fail without hurting the system too much.
Star topologies involve connection all the computers to a central device. This feature provides resiliency to the system. However, the central device is also the single point of failure. If it is affected, the rest of the system will be too. A security officer should place special importance on maintaining the security of this central device by using the right controls/measures so that the system does not fail as easily.