需要帮助

chillax

请大家帮帮忙
Network topology:
  Five executive connected together in a form of ring topology. The third executive, "the Master", is connected to another network which consists of 4 support staff who are connected wirelessly, and another 8 who are connected via Wi-Fi. The hub in this network is connected to three servers via a router. This server network is also directly connected to executive network.
  In order for the server to work without fail, the executive require that the servers are connected to each other, and the network must have backup router for every connection to other network.
  Thus, the total number of router in the server network is four, the first and second router connect to the support staff network, and the third and fourth router connect straight to the third and fifth executives computers.


a. What is the name of the topology for support staff's network?
b. What is the name of the topology for server network?
c. Draw the complete network topology.

谁可以解释和教..thanks alot