Happy Librarian Using Library Calendar Software

Why do computers need both MAC Addresses and IP Addresses?

We know from previous posts that each computer has both an IP Address and a MAC Address assigned to it. But, why is this? If every computer in order to communicate with each other needed to be physically connected to each other, all networks either would become complicated very quickly or they would stay small. Imagine if in order to go to google.com you had to have a physical wire connecting your computer out to Palo Alto California, just to see their website.  Now imagine, you also needed a…