Two MAC are declared below :- 1.    A MAC is an address of a device which stands for media access control address . It is a uniquely identified address assigned to a  network interface controller  ( NIC ) for communications at the  data link layer  of a network segment. MAC addresses are used as a  network address  by many  IEEE 802  network technologies, including  Ethernet ,  Wi-Fi  and  Bluetooth . A  network node  may have multiple NICs where each NIC contains a unique MAC address. They are used in the  medium access control  protocol sublayer. MAC addresses are represented as six groups of two  hexadecimal  digits, separated by hyphens, colons, or no separator. A MAC address is also known as burned-in address (BIA), Ethernet hardware address (EHA), hardware address or physical address. MAC addresses are assigned by the manufacturer...