4 September 2013 · 1 minute read
You type http://python.org into your browser bar and press Enter. What happens?
A format and rules for exchanging information. Internet protocols are layered, one protocol per task. Application-layer protocols that use TCP:
Address Resolution Protocol (ARP) maps hardware (MAC) addresses to IP addresses. Local network traffic goes through gateway router (usually has IP address 192.168.1.1) and then out to internet.