What is a disadvantage of bus topology compared to other topologies?

In a bus topology, all devices are connected to a single central cable, known as the bus. One significant disadvantage of this setup is the single point of failure it presents. If the main bus cable fails or is damaged, the entire network goes down, leading to disruption in communication between all connected devices. This vulnerability stands in contrast to other topologies, such as star or mesh, which have redundancy built-in; these can continue to function even if one connection fails. This single point of failure makes bus topology less reliable in environments where uptime and consistent network access are critical.