Question: 4. The following HTTP GET request was sent by a web browser and captured using Wire- shark. The characters are respectively the carriage return

4. The following HTTP GET request was sent by a web browser and captured using Wire- shark. The characters are respectively the carriage return and line-feed characters. Please answer the questions below (20 points): GET /cs453/index.html HTTP/1.1 Host: gai a.cs.umass.edu User-Agent: Mozilla/5.0 ( Windows; U; Windows NT 5.1; en-US; rv:1.7.2) Gec ko/20040804 Netscape/7.2 (ax) Accept: ex t/xml, application/xml, application/xhtml+xml, text /html;q=0.9, text/plain;q=0.8, image/png,*/*;q=0.5 Accept-Language: en-us,en;q=0.5 Accept- Encoding: zip, deflate Accept-charset: ISO -8859-1,utf-8;q=0.7, *;q=0.7 Keep-Alive: 300 Connection: keep-alive a. What is the URL of the requested document? b. What version of HTTP is the browser running? c. Is this a non-persistent or a persistent connection? d. What is the IP address of the host on which the browser is running? c. What type of browser initiates this message? Why is the browser type needed in an HTTP request message?

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