2.3. 4.4.3.1 Star
topology
In a star topology, the hub or switch is placed in the logical
center of the network. The remaining network devices are connected to this
central hub like the points on a star.
2.4. 4.4.3.2 Bus
topology
A bus topology is a linear configuration. It places all of the
network devices on one length of cable, similar to stops on a city bus route.
The hubs, server, stations and peripheral devices all use the same continuous
length of transmission channel.
2.5. 4.4.3.3 Ring
topology
A ring topology places all of the network devices in a circle. It
uses one transmission channel to connect all devices. Each device is connected
to the next one. The last device is connected to the first closing the
circle.
2.6. 4.4.3.4 Flat
Network
In a flat network all connecting devices are on the same level
Table of advantages and disadvantages
|
Star
|
Bus
|
Ring
|
|
Advantages
|
ü fault easy to locate and isolate
ü central management
|
ü Adaptable to environment changes
ü Easy to expand and add devices
|
No reliance on central device
|
|
Disadvantages
|
Single point of failure
|
Lack of central control
Single point of failure
|
Device can be added only when the network is inoperative
|
Table 4.1. Comparison between network topologies
Figure 4.3. Flat network
| 
