P4. a. The URL of the document is _gaia.cs.umass.edu_ as indicated by *Host:*
b. The browser runs version 1.1 of HTTP as indicated in the GET statement of line 1.
c. The browser requests a persistent connection as indicated by the line *Connection: keep-alive*
d. The browser type making the request to the user is Mozilla/5.0 or Firefox browser. The browser type is needed because the server can send different versions of the same object depending on the user-agent or type of browser.
P5. a. The server used send a code 200 using the OK method indicating that it found the document. The document reply was given last 12:39:45 GMT.
b. The document was last modified on Saturday December 10th, 2005 at 18:27:46 GMT.
c. The returned document contains 3874 bytes.…show more content… The first 5 bytes of the returned document are *<!doc*. Yes, the server agreed to a persistent connection.
P7. The total time to get the IP address is RTT1 + RTT2 + … + RTTN. Then R0 elapses once to set up the connection and once to request and receive and object. The total time would then be 2RTT0 + RTT1 + RTT2 + … + RTTN.
P8. a. 18RTT0 + RTT1 + RTT2 + … + RTTN
b. 2RTT0 + RTT1 + RTT2 + … + RTTN
c. 3RTT0 + RTT1 + RTT2 + … + RTTN
P9. a. Total average response time is 3.6 seconds.
b. Total average response time with a cache and miss rate of 0.4 is 1.24 seconds.
P11. a. Yes, Bob would have more connections than the other four users so he would get webpages more
