CS356s20-Homework2 @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ The HTTP RESPONSE message Consider the figure below, where the server is sending a HTTP RESPONSE message back the client. http GET http reply Internet host, running a web browser gaia.cs.umass.edu Web server Suppose the server-to-client HTTP RESPONSE message is the following: HTTP/1.1 404 Not Found Date: Sat, 28 Dec 2019 18:55:13 +0000 Server: Apache/2.2.3 (Centos) Content-Length: 67181 Keep-Alive: timeout=51, max=75 Connection: keep-alive Content-type: image/html Answer the following questions: 11. Is the response message using HTTP 1.0 or HTTP 1.1? Explain. 12. Was the server able to send the document successfully? Explain 13. At what date and time was this response sent? 14. When was the file last modified on the server? 15. How many bytes are there in the document being returned by the server? 16. What is the default mode of connection for HTTP protocol? Is the connection in the reply persistent or nonpersistent? Explain. 17. What is the type of file being sent by the server in response? 18. Does the response message use separate keep-alive messages? 19. What is the name of the server and its version ? List the advantages of the server used. 20. What is the timeout value for the response message