For what two purposes does the Ethernet protocol use physical addresses?()
- A to uniquely identify devices at Layer 2
- B to allow communication with devices on a different network
- C to differentiate a Layer 2 frame from a Layer 3 packet
- D to establish a priority system to determine which device gets to transmit first
- E to allow communication between different devices on the same network
- F to allow detection of a remote device when its physical address is unknow