I know that MAC address is a physical address attached to Network Interface Card(NIC) to identify your computer uniquely. However, MAC address of Ethernet NIC or Wireless 802.11a/b/g/n WiFi NIC are different.
So, does it mean a laptop can be identified with 2 different MAC address depending on the network interfaces it supports?(Wifi/Ethernet or both)
Also, modem has MAC address found on the bottom of the Modem. Why does modem has a unique MAC address on your home network besides laptop, phone and other devices connected to the Internet?