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GATE | CS 2022 | Question 57
Consider a network with three routers P, Q, R shown in the figure below. All the links have cost of unity
The routers exchange distance vector routing information and have converged on the routing tables, after which the link Q−R fails. Assume that P and Q send out routing updates at random times, each at the same average rate. The probability of a routing loop formation (rounded off to one decimal place) between P and Q, leading to count-to-infinity problem, is___________.
(A)
1
(B)
3
(C)
2
(D)
0
Answer
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