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( 2 0 points ) Consider a local network consisting of a source computer connected to an edge router that connects to a wide area
points Consider a local network consisting of a source computer connected to an edge router that connects to a wide area network which routes packets through one backbone router to the destination edge router to the destination local area network and destination computer. Assume Data rate is RMbps Distance from computer to edge router km Distance from edge router to backbone router km Signal Propagation speed is ms ACK packet size Bytes There are no queueing delays and packetprocessing delays are negligible zero a Sketch the network topology. b Calculate the latency to successfully deliver one VoIP packet with Byte payload as described in Problem b above from the source to the sources edge router, where a successful delivery is indicated by the successful return of an ACK packet. c Suppose the probability that a packet is successfully delivered on one link is Recalculate the latency and link efficiency from a and b d Calculate the latency to successfully deliver one VoIP packet with Byte payload as described in Problem b above from the source all the way to the destination, where a successful delivery is indicated by the successful return of all ACK packets. Assume the acknowledgements are hopbyhop, I.e each device that receives a packet returns an ACK packet. points Assuming the network topology and parameters are the same as provided in problem above... a Calculate the link efficiency for the link between the source and the sources edge router. b Calculate the link efficiency for the endtoend link from the source computer to destination computer. c Suppose the probability that a packet is successfully delivered on one link is i Recalculate the latency from part d ii Recalculate the link efficiency from part d
points Consider a local network consisting of a source computer connected to an edge router that connects to
a wide area network which routes packets through one backbone router to the destination edge router to the
destination local area network and destination computer.
Assume
Data rate is RMbps
Distance from computer to edge router km
Distance from edge router to backbone router km
Signal Propagation speed is ms
ACK packet size Bytes
There are no queueing delays and packetprocessing delays are negligible zero
a Sketch the network topology.
b Calculate the latency to successfully deliver one VoIP packet with Byte payload as described in
Problem b above from the source to the sources edge router, where a successful delivery is indicated
by the successful return of an ACK packet.
c Suppose the probability that a packet is successfully delivered on one link is Recalculate the latency
and link efficiency from a and b
d Calculate the latency to successfully deliver one VoIP packet with Byte payload as described in
Problem b above from the source all the way to the destination, where a successful delivery is
indicated by the successful return of all ACK packets. Assume the acknowledgements are hopbyhop, I.e
each device that receives a packet returns an ACK packet.
points Assuming the network topology and parameters are the same as provided in problem above...
a Calculate the link efficiency for the link between the source and the sources edge router.
b Calculate the link efficiency for the endtoend link from the source computer to destination computer.
c Suppose the probability that a packet is successfully delivered on one link is
i Recalculate the latency from part d
ii Recalculate the link efficiency from part d
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