Backbone
The main line of a series of connections within a network.
Bandwidth
This is the amount of data that is sent through a connection. If you have a large web site, with many visitors, you will need a lot more bandwidth than someone with a one page web site that gets 2 visitors a month. Some hosting plans offer unlimited bandwidth, but most have limits or will just make you pay for extra bandwidth because if a site is clogging their servers with visitors, they want to get compensated for that.
Browser
A Client program (software) that is used to look at various kinds of Internet resources.
Byte
A set of Bits that represent a single character. Usually there are 8 Bits in a Byte, sometimes more, depending on how the measurement is being made.
