You go to command and type in ip config you should see everything to do with your ip there

discuss what it will take for "everything over IP" to become a reality.

Your external IP isn't used on the lan. Everything has its own internal IP and forwards their traffic onto the gateway which then strips off the internal ip and replaces it with the external ip. Then when the requested traffic comes back, the gateway forwards it back to the internal ip that requested it.

Study your project and its written report. Site some loop holes of your IP then try to answer it. The teacher or other guests will try to pull your IP down so you better master everything about your IP.

No, TCP/IP is the not the only protocol used in the world, but it is certainly one of the most popular. Older networks may still use IPX/SPX (Novell) which is a competitor to TCP/IP. Mainframes use SNA or LU6.2 protocols which are very different from TCP/IP. Appletalk is also a competitor to TCP/IP.