This topology represents a LAN connecting hosts in three different departments Marketing, Research, and Sales. Host computers in each department are configured in separate IP networks and belong to different VLANs: VLAN 10 for Marketing, VLAN 20 for Research, and VLAN 30 for Sales. Hosts in each VLAN are connected to three access layer switches which are interconnected using separate access ports for each VLAN through a distribution layer switch.