10-11-2012, 05:37 PM
Network Topology
Network Topology.ppt (Size: 555 KB / Downloads: 92)
Introduction
Physical and Logical Topologies
Topologies
Bus
Ring
Star
Extended Star
Mesh
Hybrid
Physical vs. Logical Topology
The actual layout of a network and its media is its Physical Topology
The way in which the data access the medium and transmits packets is the Logical Topology
A glance at a network is not always revealing. Cables emerging from a Hub does not make it necessarily a Star Topology – it may actually be a bus or a ring
Ring Topology
Advantages
Data packets travel at great speed
No collisions
Easier to fault find
No terminators required
Disadvantages
Requires more cable than a bus
A break in the ring will bring it down
Not as common as the bus – less devices available