Repeaters and Bridges
The information presented so far may be distilled into a few brief statements:
A data communication network is a group of two or more devices connected by a common, shared medium.
These devices have an agreed-upon set of rules, usually called the Media Access Control, or MAC, that govern how the media is shared.
Each and every device has an identifier, and each identifier is unique to only one device.
Using these identifiers, the devices communicate by encapsulating the data they need to send within a virtual envelope called a frame.
So here's this wonderful resource-sharing tool called a LAN. It's so wonderful, in fact, that everyone wants to be connected to it. And herein is the rub. As a LAN grows, new problems present ...
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