• define hub
• state the main task of hub
• state the role of switch
• define and describe repeater
• describe briefly how to operate repeater.
• state two drawbacks of repeating hubs.
• define bridge
• describe router
• state the five roles of router
• state the location of the broadband router.
• state how the router is used to transmit data to the appropriate device.
• define and describe gateway
• describe the 3 function of gateway
• describe modem
• state the differences between routers and gateways.
• describe NIC
• define WNIC
• describe the uses of WNIC
• define WAP
• define ethernet