EBK COMPUTER NETWORKING
7th Edition
ISBN: 8220102955479
Author: Ross
Publisher: PEARSON
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Question
Chapter 9, Problem P2P
a)
Program Plan Intro
HTTP streaming:
- The video files are being stored at HTTP server in the form of ordinary file with URL that is specific to the video.
- The user can watch the videos by establishing a TCP connection with the server.
- The client issues the HTTP GET request for the requested URL.
- The server will in turn send the video file through the HTTP response in quick manner.
- The video requested are delivered as quickly as possible when the congestion control and flow control allows.
b)
Program Plan Intro
HTTP streaming:
- The video files are being stored at HTTP server in the form of ordinary file with URL that is specific to the video.
- The user can watch the videos by establishing a TCP connection with the server.
- The client issues the HTTP GET request for the requested URL.
- The server will in turn send the video file through the HTTP response in quick manner.
- The video requested are delivered as quickly as possible when the congestion control and flow control allows.
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Students have asked these similar questions
(a) Suppose a server S and client C are connected over the Internet. The one-way prop-
agation delay from S to C is 50 ms. The maximum throughput between S and C is
R = 200 Mbps. A browser on client C makes an HTTP request for a webpage on server
S. The base HTML file is of size 500 KB and it references five objects, each of size
5 MB. Find the total response time for the client to receive the entire webpage using
nonpersistent HTTP with up to two parallel connections. Assume that when two par-
allel connections are active, the throughput for each connection is 40% of the maximum
throughput R.
(b) Suppose an application running on host ece.gmu.edu needs to resolve the domain name
cs.vtech.edu. Draw a diagram (with labels) showing the sequence of queries/responses
in a recursive DNS query to find the answer in a scenario where all levels of the DNS
hierarchy are involved.
Computer A uses the Go-back-N ARQ protocol to send a 110 Mbytes file to computer B with a window size of 15. Given each frame carries 100K bytes data. How long does it take to send the whole file (the total time taken from A sending the first bit of the file until A receiving the last acknowledgment)? Given that the transmission rate of the link is 500 Mbps and the propagation time between A and B is 15ms. Assume no data or control frame is lost or damaged and ignore the overhead due to header and trailer.
3.
HTTP clients and servers transfer requests and replies using a non-persistent
connection and persistent connections. Suppose we have a basic .html web page that
contains 64 objects. Assume all the transmission times for the basic html and the objects
are negligible. Assume that the round-trip time between the server and client is RTT. In
terms of RTT answer the following questions.
b.
How long does it take for HTTP with persistent pipelined connections
to download the entire page including the objects? Assume that the maximum
number of available pipelines at a time is 20 pipeline connections.
Chapter 9 Solutions
EBK COMPUTER NETWORKING
Ch. 9 - Prob. R1RQCh. 9 - Prob. R2RQCh. 9 - Prob. R3RQCh. 9 - Prob. R4RQCh. 9 - Prob. R5RQCh. 9 - Prob. R6RQCh. 9 - Prob. R7RQCh. 9 - Prob. R8RQCh. 9 - Prob. R9RQCh. 9 - Prob. R10RQ
Ch. 9 - Prob. R11RQCh. 9 - Prob. R12RQCh. 9 - Prob. R13RQCh. 9 - Prob. P1PCh. 9 - Prob. P2PCh. 9 - Prob. P3PCh. 9 - Prob. P4PCh. 9 - Prob. P5PCh. 9 - Prob. P6PCh. 9 - Prob. P7PCh. 9 - Prob. P8PCh. 9 - Prob. P9PCh. 9 - Prob. P10PCh. 9 - Prob. P11PCh. 9 - Prob. P12PCh. 9 - Prob. P13PCh. 9 - Prob. P14PCh. 9 - Prob. P15PCh. 9 - Prob. P16PCh. 9 - Prob. P17PCh. 9 - Prob. P18PCh. 9 - Prob. P19PCh. 9 - Prob. P20PCh. 9 - Prob. P21PCh. 9 - Prob. P22P
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