Which network topology is recognized as the least common form?

The least common form of network topology among the options provided is the ring topology. In a ring topology, each device on the network is connected to two other devices, forming a circular pathway for signals. Data travels in one direction around the ring, which can lead to slow performance as the network grows larger.

Due to its design, the ring topology can be more challenging to troubleshoot and maintain. If a single device or connection fails, it can disrupt the entire network, causing significant downtime and making it less desirable for modern networking needs.

In contrast, bus, star, and hybrid topologies are more frequently utilized because they offer better performance, scalability, and ease of management. The star topology, for instance, allows for easy addition and removal of devices without impacting the rest of the network, while hybrid topologies combine elements of various topologies to leverage their strengths.