Following is the diagram of my company's network and the infrastructure consists of

  • Domain Controller
  • Additional Domain Controller
  • Local Web Server
  • Proxy Server
  • 100 workstations located in 8 different departments.
  • 9 16-port unmanaged switches (Model: D-Link DES-1016D). one for each department and one for main connection to the servers
  • A class C network of 192.168.1.x    IP scheme
  • Star topology

How can i imporve this network?