Question: Suppose a HTTP client-server exchange the following HTTP request and response (only header information provided below): GET /kurose_ross/some_page.php Host: gaia.cs.umass.edu HTTP/1.1 If-Modified-Since: Thu, 23

Suppose a HTTP client-server exchange the following HTTP request and response (only header information provided below): GET /kurose_ross/some_page.php Host: gaia.cs.umass.edu HTTP/1.1 If-Modified-Since: Thu, 23 Sep 2021 05:22:42 -0700 HTTP/1.0 200 OK Date: Thu, 20 Sep 2021 12:55:41 GMT Server: Apache/2.2.3 (Centos) Content-Length: 66423 Keep-Alive: timeout=37, max=71 Connection: Keep-alive Content-type: image/html Answer the following questions: [LP] 1. What is the file that is being retrieved? 2. What version of HTTP is the client running? 3. What version of HTTP is the server running? 4. Did the server send the document successfully? If so, how large is the file? [HP] 1. Does the client have a cached copy of the page? How can you say? 2. Is the connection persistent or nonpersistent? How can you say?

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