Question

Consider a token ring network with a length of 2 km having 10 stations including a monitoring station. The propagation speed of the signal is 2 × 102 m/s and the token transmission time is ignored. If each station is allowed to hold the token for 2 μsec, the minimum time for which the monitoring station should wait (in μsec) before assuming that the token is lost is _______. *
28 to 30
20 to 22
30 to 32
38 to 40

Answer 1

Explanation:

Time required to complete one cycle=Tp (Ring Latency) +N*THT

= 2km/(2*108 m/s) +10*2

= 10 + 10 * 2 = 30 μs

where THT is token holding time .