But let me comment on "router." This one has changed in definition over the years. My first router back in 1990 did exactly what the name implied. Today, 2009 the "router" is that consumer piece of gear that comes with wifi, router with NAT, switched hub and more.
Without nailing down the year you want to define this in and a context the exact definition can be fluid.
I could really do with a clear set of definitions of...
- Subnet Mask
It would be great if anybody is prepared to provide any help.