The data packet sent to the all the device on the network through bus.
If the designation address on the packet matches it is own address the device read the data else it is ignore it.
The device knows as terminator that is attached to the end of the bus.
If the multiple devices transmit signals at the same time it may lead to a collision.
To avoid collision bus topology uses mechanism called as carrier sense Multiple Access (CSMA/CD)
Advantage
It is easy to install
It is requires minimum cabling
Low cost for setting up
Disadvantage
It is difficult to add more devices to a bus network that is already established.
An administrator difficulty in maintain and trouble-shooting such a topology