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Authors:
James F. Kurose, Keith W. Ross
Chapter:
Application Layer
Exercise:
Problems
Question:23 | ISBN:9780132856201 | Edition: 6

Question

Consider distributing a file of F bits to N peers using a client-server architec-ture. Assume a fluid model where the server can simultaneously transmit to multiple peers, transmitting to each peer at different rates, as long as the com-bined rate does not exceed u s .

a. Suppose that u s /N ≤ d min . Specify a distribution scheme that has a distri-bution time of NF/u s.

b. Suppose that u s /N ≥ d min . Specify a distribution scheme that has a distri-bution time of F/ d min.

c. Conclude that the minimum distribution time is in general given by max{NF/u s , F/ d min }.

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