Media Access Control — unique address assigned to a NIC (Network Interface Card) of your machine.
MAC Flooding —
It is a type of attack in which we overload the switch by sending the large amount of ARP responses leading to the switching of the switch to a hub. Which further means it will forward traffic to each and every device on the network. Thus a hacker can easily intrude the data using network sniffing tools like Wireshark.
It is a part of DSNIFF tool suit. It is mainly used to flood the switch on a local network with MAC addresses