The MAC address of any device is represented by a 12-digit hexadecimal number. MAC address identifies the device you are using since it is imprinted on the device hardware whereas IP address identifies the connection status among devices seeking to communicate on an existing/configured network. There is a key difference between MAC address and IP address and therefore we should not confuse the two. The house in this case is the network interface controller ( NIC). To practically relate to or understand what a MAC address is, think of it as the postal or physical address to a house.
The network interface controller ( NIC) uses the MAC address as its assigned unique identifier within an existing network segment.
The term MAC Address is a derived abbreviation for Media Access Control Address.
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