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d. What is the IP address of the host on which the browser is running?    e. What type of browser initiates this message? Why is the browser type needed in  an HTTP request message

d. What is the IP address of the host on which the browser is running?    e. What type of browser initiates this message? Why is the browser type needed in  an HTTP request message

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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d. What is the IP address of the host on which the browser is running? 

 

e. What type of browser initiates this message? Why is the browser type needed in  an HTTP request message? 

Here's the transcription of the image, suitable for an educational website: --- **HTTP Request Example:** ``` GET /cs453/index.html HTTP/1.1 Host: gaia.cs.umass.edu User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) Accept: text/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 ``` **Explanation:** - **GET /cs453/index.html HTTP/1.1**: This line indicates an HTTP GET request to fetch the resource `/cs453/index.html` using HTTP version 1.1. - **Host: gaia.cs.umass.edu**: Specifies the host server from which the resource is requested. - **User-Agent**: Identifies the client software making the request. Here, it's Mozilla/5.0 running on Windows NT 5.1 with Netscape 7.2. - **Accept**: Lists the content types the client can process, with quality factors (e.g., `q=0.9`) indicating preference levels. - **Accept-Language**: Specifies preferred languages for content, with quality values indicating preference levels. - **Accept-Encoding**: Lists acceptable encoding methods (e.g., zip, deflate). - **Accept-Charset**: Specifies the character sets the client supports, with preference levels. - **Keep-Alive**: Indicates a preference to maintain a persistent connection for 300 seconds. - **Connection: keep-alive**: Suggests maintaining an open connection for multiple requests/responses. This example helps explain how browsers communicate with web servers using specific headers to request web resources.
Transcribed Image Text:Here's the transcription of the image, suitable for an educational website: --- **HTTP Request Example:** ``` GET /cs453/index.html HTTP/1.1 Host: gaia.cs.umass.edu User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) Accept: text/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 ``` **Explanation:** - **GET /cs453/index.html HTTP/1.1**: This line indicates an HTTP GET request to fetch the resource `/cs453/index.html` using HTTP version 1.1. - **Host: gaia.cs.umass.edu**: Specifies the host server from which the resource is requested. - **User-Agent**: Identifies the client software making the request. Here, it's Mozilla/5.0 running on Windows NT 5.1 with Netscape 7.2. - **Accept**: Lists the content types the client can process, with quality factors (e.g., `q=0.9`) indicating preference levels. - **Accept-Language**: Specifies preferred languages for content, with quality values indicating preference levels. - **Accept-Encoding**: Lists acceptable encoding methods (e.g., zip, deflate). - **Accept-Charset**: Specifies the character sets the client supports, with preference levels. - **Keep-Alive**: Indicates a preference to maintain a persistent connection for 300 seconds. - **Connection: keep-alive**: Suggests maintaining an open connection for multiple requests/responses. This example helps explain how browsers communicate with web servers using specific headers to request web resources.
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