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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Computer EngineeringQ&A Library2.1 Mbps. Assume that packets are of length 2.0 Kb (Kilobits) and the length of the link is 100Km. a. What is the propagation delay from A to B, that is the amount of time from when the first bit of the packet is transmitted at A, until it is received at B? b. What is the transmission time of the packet at A (the time from when the first bit of the packet is sent into the wire and the time at which the last bit is sent into the wire). c. Suppose now that that length of the link is doubled. What is the propagation delay from A to B now and what is the transmission t

2.1 Mbps. Assume that packets are of length 2.0 Kb (Kilobits) and the length of the link is 100Km. a. What is the propagation delay from A to B, that is the amount of time from when the first bit of the packet is transmitted at A, until it is received at B? b. What is the transmission time of the packet at A (the time from when the first bit of the packet is sent into the wire and the time at which the last bit is sent into the wire). c. Suppose now that that length of the link is doubled. What is the propagation delay from A to B now and what is the transmission t

Question

Consider two hosts, A and B that are connected by a transmissions link of
2.1 Mbps. Assume that packets are of length 2.0 Kb (Kilobits) and the
length of the link is 100Km.

a. What is the propagation delay from A to B, that is the amount of time
from when the first bit of the packet is transmitted at A, until it is received
at B?

b. What is the transmission time of the packet at A (the time from when
the first bit of the packet is sent into the wire and the time at which the
last bit is sent into the wire).

c. Suppose now that that length of the link is doubled. What is the
propagation delay from A to B now and what is the transmission time?

d. Now suppose that node C is connected to node B also by a 2 Mbps, 100
Km link. How long does it take from when the first bit is transmitted by A
to when the last bit is received at C, assuming B operates in a store-and -forward manner?

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