| Type of network topology | Bus topology
 | Ring topology
 | Star topology
 |
| Definition | Network that consists of a single central cable to which all computers and other devices connect. | Network where a cable forms a closed loop with all computers and devices arranged along the ring. | All the computers and other devices on the network connect to a central device thus forming a star. |
| Description | - Each device is connected to the bus cable through T-connector.
- Terminator is at each end to prevent signal from bouncing back and forth on the bus cable.
| | - Two types of devices that provide a commo central point to all the other devices on the network are hub & switch.
|
| Data transmit | Transmits
data and instructions as a series of signals in both directin where all
nodes receive signal but only the intended recipient will accept the
signal. | Data travels the entire ring in one direction and reach its destination by using token. | Data transfers from one node to another node passing through hub/switch. |
| Advantages | - Failure in one device does not affect the rest of the bus network.
- Inexpensive and easy to install.
- Devices can be attached and detached without disturbing the rest of the network.
| - All computers have equal access to resources in the network.
- The uses of token enables all devices in ring topology to share the network resources fairly.
- Cable faults are easily located.
- Data pockets are flowing in one direction at high speed around the ring.
- The transmission of data is simple.
| - If one device fails, only that device is affected.
- Devices can be added and removes with little distruption.
- Easy to troubleshoot.
|
| Disadvantages | - The network will malfunction if the backbone breaks down.
- The break will prevent all systems from accessing the network.
- The performance of network will slow down if more computers are added because of data collision.
| - Network malfunctions if device breaks down.
- Difficult to install.
- Data packets must pass through every computer making it slower.
| - Network will malfunction if hub/switch breaks down.
- Requires more cable cost than other topologies.
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