Difference between MAC and IP address

Question

I’m aware that the mac address is part of the data link layer, but why can’t I just use my MAC address as IP address, too?
Why do I need both addresses?

In: 14

Answer 1

Your MAC address is your name. Your IP address is your location.

Name alone isn’t sufficient, because it doesn’t tell how to find you. Location alone isn’t sufficient, because there might be someone else there right now.