
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Transcribed Image Text:Consider a short, 10-meter link, over which a
sender can transmit at a rate of 150 bits/sec in both
directions. Suppose that packets containing data
are 100,000 bits long, and packets containing only
control (e.g., ACK or
handshaking) are 200 bits long. Assume that
N parallel connections each get 1/N of the link
bandwidth. Now consider the HTTP protocol,
and suppose that each downloaded object is 100
Kbits long, and that the initial downloaded object
contains 10 referenced objects from the same
sender. Would parallel downloads via parallel
instances of non-persistent HTTP make sense in this
case? Now consider persistent HTTP. Do you expect
significant gains over the non-persistent case?
Justify and explain your answer.
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