The notation used to represent MAC address is hexadecimal number.
Media access control address (MAC address) is a unique address assigned to a network interface controller (NIC) or network adapter. MAC addresses are also known as hardware addresses or physical addresses.
MAC addresses are 12-digit hexadecimal numbers (48 bits or 6 byte in length). MAC address allow computers to uniquely identify themselves.
Therefore hexadecimal numbers are used to represent MAC address.
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