Question: Consider a source and a destination connected by N links (i.e., N-1 packet switches). Each link has capacity R bps, and propagation delay d seconds.

Consider a source and a destination connected by N links (i.e., N-1 packet switches). Each link has capacity R bps, and propagation delay d seconds. Ignore processing delays and assume that initially all the buffers are empty.

Now suppose the links (in the order from source to destination) have capacities R1 < R2 < ... < RN and propagation delays d1 < d2 < ... < dN (with arbitrary values).

a) Give formula for the end-to-end delay of sending P packets of Length L bits each.

b) Repeat a), but assume R1 > R2 > ... > RN (still arbitrary values for d1, d2, ..., dN)

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