Question: If an ARQ algorithm is running over a 40-km point-to-point fiber optic link then: a. Compute the propagation delay for this link, assuming that the

If an ARQ algorithm is running over a 40-km point-to-point fiber optic link then:

a. Compute the propagation delay for this link, assuming that the speed of light is 2 x 10^8 meters per second in the fiber.

b. Suggest a suitable timeout value for the ARQ algorithm to use. Assume transmission time for data frames and returning ACKs is insignificant, compared to link propagation delay.

c. Why might it still be possible for the ARQ algorithm to time out and re-transmit a frame, given this timeout value?

d. ----

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