CertiGuide to Network+  9  Chapter 0000:  Network Basics       9  VIII  Network Topologies

Bus Network 1 Pop Quiz 0000.01

The token ring topology is frequently found in IBM token ring networks. The concept is to create a data-carrying token (not unlike a ferry boat).

Instead of a central hub as found in the star network, a MAU (Media Access Unit) is the center point. Inside the MAU is a logical ring.

The ring network delimits the requirement of a wiring closet. Should a token get ‘stuck’ or a PC malfunctions, the MAU disconnects that PC from the network so that the rest of the network is unaffected.

Token ring networks operated at either 4mbit/sec or 16mbit/sec. Putting one 4mbit/sec token ring PC on a 16mbit/sec network will function only if the 4mbit/sec PC is turned on first. Then the network will operate at 4mbit/sec. In all other logistical cases, the network will cease to function.

Bus Network 1 Pop Quiz 0000.01