5. Suppose that a user seeks to download 10 images on a web page. Each image is 1,000 bytes and is treated as a separate object. Suppose that the user is directly connected to the web-server by via a bottleneck link with capacity of 10Mbps link (full duplex) and that the overall propagation delay is 100µsec (roughly a distance of 30km). Ignore any other sources of delay. a. Estimate how long it would take to download these images using HTTP with non-persistent connections (and no pipelining). b. Estimate how long it would take to download these images using persistent connections and pipelining (i.e., the user can send all 10 requests one after the other, without waiting for any responses; assume that after getting a request, the server sends it back as soon as it is done sending the previous request.)

5. Suppose that a user seeks to download 10 images on a web page. Each image is 1,000 bytes and is treated as a separate object. Suppose that the user is directly connected to the web-server by via a bottleneck link with capacity of 10Mbps link (full duplex) and that the overall propagation delay is 100µsec (roughly a distance of 30km). Ignore any other sources of delay. a. Estimate how long it would take to download these images using HTTP with non-persistent connections (and no pipelining). b. Estimate how long it would take to download these images using persistent connections and pipelining (i.e., the user can send all 10 requests one after the other, without waiting for any responses; assume that after getting a request, the server sends it back as soon as it is done sending the previous request.)

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Question

5. Suppose that a user seeks to download 10 images on a web page. Each image is 1,000 bytes and is
treated as a separate object. Suppose that the user is directly connected to the web-server by via a
bottleneck link with capacity of 10Mbps link (full duplex) and that the overall propagation delay
is 100usec (roughly a distance of 30km). Ignore any other sources of delay.
a. Estimate how long it would take to download these images using HTTP with non-persistent
connections (and no pipelining).
b. Estimate how long it would take to download these images using persistent connections
and pipelining (i.e., the user can send all 10 requests one after the other, without waiting
for any responses; assume that after getting a request, the server sends it back as soon as it
is done sending the previous request.)

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