Do all computers have a MAC address?

do all computers have a mac address/NETWORK CARD?

Do all computers have a MAC address?adware

It is the network card that has a MAC address, but yes, all network cards have a unique MAC address.

Do all computers have a MAC address?antivirus scan

Yes, each network card installed in your computer has a MAC address. You can find it my clicking start, run and typing cmd and then ok. At the command prompt type ipconfig /all. The MAC address will be listed as the Physical Address.
NIC is add on card ...However the computeres in the recent has a inbuilt NIC card ...Each NIC has a valid MAC address
Yup. It is how they indentify them selves on a network. And the internet is a network.
All Network devices have MAC address - whether they are network cards, switches, or router each one has a unique address. Therefore you will not find ANY two devices with the same address. The only time you might find the same address is if you clone the MAC address.