Bus topology LANs are very rare these days. It would be easier to use a star topology than a bus topology for a few devices.
Bus topology is extended via the use of repeaters.
Bus Topology
BUS
Most LANs use UTP cable, category 5 or better.
Sure, the machines have to be connected somehow. A star topology is quite common.
Star topology is very common; chances are any company you can think of (big or small) is using a star in their LANs somewhere within the company.
A bus topology for a LAN will typically use coaxial cable, either 10Base5 (thicknet) or 10base2 (thin-net) copper wiring.
Bus Network Topology.
SONET use RING physical topology and TOKEN logical topology. As simple as that. Logical topology deals with the data transmission. Physical topology deals with how the network is connected physically , BUS, RING, STAR and the like.
he most commonly used network topology is a hybrid topology called the Star Bus TopologyRead more: http://wiki.answers.com/What_is_network_topology_and_give_an_example_of_the_most_common_network_topology#ixzz1TrCMGlb6
Yes, peer to peer can be implemented in linear bus topology.