HTTP 1.1 GET with an embedded object. Suppose an HTTP client makes a request to the gaia.cs.umass.edu web server. The client has never before requested a given base object, nor has it communicated recently with the gaia.cs.umass.edu server. You can assume, however, that the client host knows the IP address of gaia.cs.umass.edu. Suppose also that after downloading the base file, the browser encounters a jpeg object in the base html file that is stored on gaia.cs.umass.edu, and therefore makes another GET request to gaia.cs.umass.edu for that referenced jpeg object. How many round trip times (RTTs) are needed from when the client first makes the request to when the base page and the jpeg file are completely downloaded, assuming the time needed by the server to transmit the base file, or the jpeg file into the server's link is (each) equal to 1/2 RTT and that the time needed to transmit the HTTP GET into the client's link is zero? You should assume that persistent HTTP 1.1 is being used. (You should take into account any TCP setup time required before an HTTP GET is actually sent by the client, the time needed for the server to transmit the requested object, and any propagation delays not accounted for in these amounts of time.) 2.5 RTT 4 RTT 5 RTT 2 RTT 1 RTT Not quite. Your answer is incorrect.
HTTP 1.1 GET with an embedded object. Suppose an HTTP client makes a request to the gaia.cs.umass.edu web server. The client has never before requested a given base object, nor has it communicated recently with the gaia.cs.umass.edu server. You can assume, however, that the client host knows the IP address of gaia.cs.umass.edu. Suppose also that after downloading the base file, the browser encounters a jpeg object in the base html file that is stored on gaia.cs.umass.edu, and therefore makes another GET request to gaia.cs.umass.edu for that referenced jpeg object. How many round trip times (RTTs) are needed from when the client first makes the request to when the base page and the jpeg file are completely downloaded, assuming the time needed by the server to transmit the base file, or the jpeg file into the server's link is (each) equal to 1/2 RTT and that the time needed to transmit the HTTP GET into the client's link is zero? You should assume that persistent HTTP 1.1 is being used. (You should take into account any TCP setup time required before an HTTP GET is actually sent by the client, the time needed for the server to transmit the requested object, and any propagation delays not accounted for in these amounts of time.) 2.5 RTT 4 RTT 5 RTT 2 RTT 1 RTT Not quite. Your answer is incorrect.
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
Problem 1PE
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Transcribed Image Text:HTTP 1.1 GET with an embedded object. Suppose an HTTP client makes a request to
the gaia.cs.umass.edu web server. The client has never before requested a given base
object, nor has it communicated recently with the gaia.cs.umass.edu server. You can
assume, however, that the client host knows the IP address of gaia.cs.umass.edu.
Suppose also that after downloading the base file, the browser encounters a jpeg
object in the base html file that is stored on gaia.cs.umass.edu, and therefore makes
another GET request to gaia.cs.umass.edu for that referenced jpeg object.
How many round trip times (RTTs) are needed from when the client first makes the request
to when the base page and the jpeg file are completely downloaded, assuming the time
needed by the server to transmit the base file, or the jpeg file into the server's link is (each)
equal to 1/2 RTT and that the time needed to transmit the HTTP GET into the client's link
is zero? You should assume that persistent HTTP 1.1 is being used. (You should take into
account any TCP setup time required before an HTTP GET is actually sent by the
client, the time needed for the server to transmit the requested object, and any
propagation delays not accounted for in these amounts of time.)
2.5 RTT
4 RTT
5 RTT
2 RTT
1 RTT
Not quite. Your answer is incorrect.
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