System A consists of a single ring with 100 stations, one per repeater. System B consists of four 25 stations rings linked by a bridge. If the probability of a link failure is , a repeater failure is , and a bridge failure is , derive an expression for parts (a) to (e). 50 points
a)Probability of failure of system A.
b)Probability of complete failure of system B.
c)Probability that a particular station will find the network unavailable, for systems A and B.
d)Probability that any two stations selected at random will be unable to communicate for systems A and B.
e)Compare values of parts (a) and (b) for
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