Calculate the effective bandwidth for the following cases. For(a) and (b) assume there is a steady supply of data to send; for(c) simply calculate the average over 12 hours.(a) 100-Mbps Ethernet through three store-and-forwardswitches as in Exercise 16(b). Switches can send on one linkwhile receiving on the other.(b) Same as (a) but with the sender having to wait for a 50-byteacknowledgment packet after sending each 12,000-bit datapacket.(c) Overnight (12-hour) shipment of 100 DVDs that hold 4.7 GBeach.

(a) The effective bandwidth is 100 Mbps, so that the sender can send data steadily at this rate and…

Answered: d (b) assume there is a s ply calculate…

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d (b) assume there is a s ply calculate the averag 0-Mbps Ethernet throu- ritches as in Exorciso 16

Operations Research : Applications and Algorithms

4th Edition

ISBN:9780534380588

Author:Wayne L. Winston

Publisher:Wayne L. Winston

Chapter20: Queuing Theory

Section20.10: Exponential Queues In Series And Open Queuing Networks

Problem 8P

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A data channel at 5 Gbps is shared by two users. Assume that each user is transmitting at 2.5Gbps data rate continuously. Each user only transmits only 30% of the time. (a) If circuit switching is used, how many users can be supported? (b) If packet switching is used, would there be queuing delay to accommodate these two users? If a third identical user is added will there be a queuing delay? (c) What is the probability that a user is sending data? (d) Now assume three users under packet switching. Compute the probability that at any given time all three are transmitting at the same time. What is the fraction of time when the queue is growing?