__ I'm very immature __ I'm appropriately mature for my age __ I'm very mature __ I'm gaining maturity (growing personally) __ I have most or all the requisites for personal growth __ people who know me would agree with my answers above.
So the frame gets broadcasted throughout the broadcast domain, until the end device with a matching MAC address responds to the broadcast, thus giving the switch a new source address to add to its MAC table. It duplicates the frame to all Ethernetports, except the port it came from.
Since ethernet uses MAC addresses, the sender needs to get the MAC address of the next hop. There is a special protocol ARP (address resolution protocol) that is used for that. Once the sender has retrieved the MAC address of the next hop, he writes that target MAC address into the packet and sends the packet.