Answer:
The advantage of a bus topology is that it is easy to extend or to create; all you need are the connecting wires. You do not need any additional special devices such as hubs or switches.
The disadvantage is that it is not very scalable, meaning you cannot add a lot of client systems on the segment. The other disadvantage to using a bus network is that any segment break will bring down the entire network and it can be tedious to find the break.