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HTTP GET request from your browser tothe server. Do you see an “IFMODIFIEDSINCE:” line in the HTTP GET? Ifso, what information follows the “IFMODIFIEDSINCE:” header?答:是的,IfModifiedSince:Tue, 13 Sep 2011 13:25:01 GMT。11. What is the HTTP status code and phrase returned from the server in response tothis second HTTP GET? Did the server explicitly return the contents of the file?Explain.答:返回的狀態(tài)碼和相應(yīng)狀態(tài)信息是: 304 not modified;服務(wù)器沒(méi)有明確的返回所請(qǐng)求對(duì)象的內(nèi)容,因?yàn)槭蔷彺嫫魍ㄟ^(guò)使用該對(duì)象,而向?yàn)g覽器轉(zhuǎn)發(fā)的該對(duì)象的拷貝。3. Retrieving Long Documents12. How many HTTP GET request messages were sent by your browser?答:有4個(gè)HTTP GET請(qǐng)求信息。13. How many datacontaining TCP segments were needed to carry