Numerical question on networks


Length of a 16 Mbps token ring network is 1000 meters. Speed of propagation in cable is 60% of the speed of light. Each station holds token for 5 μsec. How long does it take for a 3 Byte token to go around the ring? (The number of stations in ring = 20)
A. 1.36 μsec B. 5.56 μsec C. 1.3610-4 sec D. 1.0610-4 sec


Token ring is not in the syllabus. I think