MAC (Media Access Control) is the address used by the low-level networking, e.g. Ethernet or Arcnet handling. It points out a station in the local network.
ARP is a protocol in the Internet Protocol (IP) stack for translation of IP addresses (4 dotted bytes, e.g. 192.168.42.13) to the MAC addresses (e.g. Ethernet 00:0d:20:52:68:34).
A MAC frame is, AFAIK, the IP packet sent on the link level with the MAC headers and trailers.
An ARP frame is a link level frame carrying the ARP protocol data.
The MAC address is resolved by an ARP protocol query frame which is a broadcast MAC frame. The addressed station sends back (non-broadcast) an ARP response frame.
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