What is the Internet?
- a series of tubes
- the same as the web
- something else
A nuts and bolts view of the Internet
The internet is a network of networks consisting of:
- hosts (can be either clients or servers)
- communication links of varying bandwidths
- routers (switching devices)
- modems translate bits to travel throught wires and air
- A client program runnign on a host, following a protocol, requests and recieves a file from a server program running on another system
- We call such programs processes