Answer :
Final answer:
A Repeater hub is a device that regenerates and amplifies signals to extend their travel distance without degradation. It operates at the physical layer of the OSI model but doesn't filter data. Thus, option b) Repeater hub is correct answer.
Explanation:
A hub that repeats and regenerates signals is called a Repeater hub. This device operates at the physical layer of the OSI model, and its main function is to take the information it receives and regenerate the signal to extend the distance it can travel without degrading. Repeater hubs do not filter data or perform any sort of intelligent routing; they simply amplify the signals and resend them.
