Which Network Device Work Which OS Layer ?

Hubs : Hubs Network Device operate at Psychical Layer. Switches : Switches Network Device operate at Data-Link Layer. Bridges : Bridges Network Device operate at Data-Link Layer. Routers : Routers Network Device operate at Network Layer. NIC (Network Interface Card): NIC Network Device operate at Data-Link Layer and Psychical Layer. Wireless Access Point : Wireless Access Point Network Device operate at Psychical Layer. Repeater : Repeater Network Device operate at Psychical Layer. Getaway : Getaway Network Device operate at Application, Session and Network Layer .