Posted by **Bob** on Monday, March 17, 2014 at 5:16pm.

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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