Which networking topology is difficult to reconfigure and a break in it disables the entire network?

The networking topology that is difficult to reconfigure and where a break can disable the entire network is the bus topology. In this configuration, all devices are connected to a single central cable, or "bus," which carries data signals. If there is a break or failure in the bus, it can disrupt communication for all devices connected to it, making troubleshooting and reconfiguration more challenging compared to other topologies.