What is MAC address or Layer 2 address or physical address

Ethernet MAC Address (7.2) > Ethernet Switching

What is the difference between IP address and MAC address, and how they are used? - Quora

Comparison between four layered TCP/IP model and five layered TCP/IP model

What are port numbers, socket numbers, well-known ports and dynamically assigned ports

What is a mac address?, MAC Address Lookup

Broadcast MAC Address - ff:ff:ff:ff:ff:ff

Network Layer (Layer 3)

MAC Address - DataFlair

What is MAC Address?- MAC Address Format and MAC Address Bits - IP With Ease

Physical Layer (Layer 1)