What is one of the main functions of hubs and repeaters?

The main function of hubs and repeaters is to extend the range of a network by amplifying or regenerating the signals that travel through the network cables. Hubs and repeaters work at the physical layer of the OSI model, primarily dealing with the transmission and reception of raw data bits over a network medium.

While interconnecting different cable types can be a feature of some network devices, hubs and repeaters specifically focus on ensuring that the signal strength remains sufficient over long distances and connecting devices that use the same cable type, rather than bridging different types of cables.

The correct choice emphasizes that these devices play a crucial role in maintaining signal integrity over the network but does not imply they are flexible in terms of cable type compatibility — that function typically falls under the realm of more advanced networking devices, such as switches and routers.