Network Topology
What is network topology?
- A network topology refers to the layout of the computers and devices in a communications network.
What is physical topology and logical topology?
- Physical topology is the arrangement of a cabling.
- Logical topology is the path that data travels between computers on a network.
Different between Client-Server and Peer to Peer Network Architecture
| Topo logy |
Definition
|
Advantages
|
Disadvantages
|
|---|---|---|---|
| Bus | A bus network consists of a single central cable(backbone), to which all computers and other devices connect. | Inexpensive and easy to install | There might be disruption when computer or other devices are added or removed. |
| Other devices can be attached or detached without disturbing the network | The break in the main cable(backbone) will prevent all systems from accessing the network. | ||
| Failure of one device usually does not affect the rest of the network | It is difficult to identify the problem if the entire network shut down | ||
| Star | All the computers and other devices on the network connect to a central device, thus forming a star. | If one device fails,only that device is affected | If the hub or switch fails,the entire network will be inoperabled |
| Devices can be added or removed from network with no disruption | Requires more cables than most of the other topologies | ||
| Easy to troubleshoot and isolate problem | More expensive because of the cost of hub/switch | ||
Ring
| On a ring network, a cable forms a closed loop(ring) with all computers and devices arranged along the ring | Transmission of data is simple as packets travel in one direction only | A failure in any cable or device breaks the loop and can take down entire network |
| Cable faults are easily located,making troubleshooting easier | Data packets must pass through every computer,thus make it slower. | ||
| All devices in ring topology share the network resources fairly | More difficult to install than a bus network |
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