Consider the network topology below, which depicts a Source and a Destination connected by two intermediate routers. The Source transmits a file of size F-40MBytes to the destination. The link speeds along the three hops between Source and Destination are as indicated on the diagram. Solve the following problems. Destination Router1 R₁-10Mbps R₂=100Mbps Router2 R₂=10Mbps Source F=40MB A. Identify the bottleneck link and calculate the end-to-end delay for packet transmission from the Source to the Destination. Submit your answer as a typed text in the submission box below, indicating which sub- question you are responding to. B. Considering the store-and-forward principle, briefly justify why the end-to-end delay will not be the sum of nodal delays on each hop. Submit your answer as a typed text in the submission box below, indicating which sub-question you are responding to.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Make sure to answer all parts correctly. Attached is image of the question

Consider the network topology below, which depicts a Source and a Destination connected by two
intermediate routers. The Source transmits a file of size F-40MBytes to the destination. The link speeds
along the three hops between Source and Destination are as indicated on the diagram. Solve the following
problems.
Destination
Router1
R₁-10Mbps
R₂=100Mbps
Router2
R₂=10Mbps
Source
F=40MB
A. Identify the bottleneck link and calculate the end-to-end delay for packet transmission from the Source
to the Destination. Submit your answer as a typed text in the submission box below, indicating which sub-
question you are responding to.
B. Considering the store-and-forward principle, briefly justify why the end-to-end delay will not be the sum
of nodal delays on each hop. Submit your answer as a typed text in the submission box below, indicating
which sub-question you are responding to.
C. Imagine that the vertical arrows below the devices are timelines and that the clocks of all machines are
absolutely synchronized. Draw the delay components experienced by a single packet as ranges on the
timeline (if they happen within the device) or as lines connecting timelines (if they happened between two
consecutive devices). Be sure to note what type of delays they are as you draw them. Submit a snapshot of
the figure with your drawings either as an attachment or as a copy-pasted image/screenshot.
Transcribed Image Text:Consider the network topology below, which depicts a Source and a Destination connected by two intermediate routers. The Source transmits a file of size F-40MBytes to the destination. The link speeds along the three hops between Source and Destination are as indicated on the diagram. Solve the following problems. Destination Router1 R₁-10Mbps R₂=100Mbps Router2 R₂=10Mbps Source F=40MB A. Identify the bottleneck link and calculate the end-to-end delay for packet transmission from the Source to the Destination. Submit your answer as a typed text in the submission box below, indicating which sub- question you are responding to. B. Considering the store-and-forward principle, briefly justify why the end-to-end delay will not be the sum of nodal delays on each hop. Submit your answer as a typed text in the submission box below, indicating which sub-question you are responding to. C. Imagine that the vertical arrows below the devices are timelines and that the clocks of all machines are absolutely synchronized. Draw the delay components experienced by a single packet as ranges on the timeline (if they happen within the device) or as lines connecting timelines (if they happened between two consecutive devices). Be sure to note what type of delays they are as you draw them. Submit a snapshot of the figure with your drawings either as an attachment or as a copy-pasted image/screenshot.
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