Ethernet is not a device, it is software protocol. There is hardware to implement the protocol, e.g. NICs, switches, hubs, etc.
Removes the Ethernet header and trailer
To connect your device to the internet using an Ethernet cable adapter for the wall, simply plug one end of the Ethernet cable into the adapter and the other end into your device's Ethernet port. This will establish a wired connection to the internet through the wall adapter.
Ethernet is bi-directional; it both transmits and receives data.
ethernet controller is the device which deals with lan card means local area connection
Arpa encapsulation must be used to enable Ethernet II frame type on your Ethernet.
a repeater
type
type
Type
type
To test an Ethernet port, you can use a known working Ethernet cable and connect it to a device with a functioning Ethernet port. Check if the device recognizes the connection and can access the network. You can also use a network testing tool to check for connectivity and data transfer speeds.
Ethernet II