Consider the following string of ASCII characters that were captured by Wireshark when the browser sent an HTTP GET message (i.e., this is the actual content of an HTTP GET message). The characters <cr><lf> are carriage return and line-feed characters (that is, the italized character string <cr> in the text below represents the single carriage-return character that was contained at that point in the HTTP header). Answer the following questions, indicating where in the HTTP GET message below you will find the answer. GET /cs453/index.html HTTP/1.1Host: gaia.cs.umass.eduUser-Agent : Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) Accept:ext/xml, application/xml, application/xhtml+xml, text/html;q=0.9, text/plain;q=0.8, image/png,*/*;q=0.5Accept-Language: en-us, en; q=0.5Accept-Encoding: zip, deflateAccept-Charset: ISO-8859-1, utf-8;q=0.7, *;q=0.7Keep-Alive: 300Connection: keep-alivea. What is the URL of the document requested by the browser?b. What version of HTTP is the browser running?c. Does the browser request a non-persistent or a persistentconnection?

Hello studentGreetingsIn the provided HTTP request, a web browser is seeking a specific resource…

GET /cs453/index.htm1 HTTP/1.1Host: gai a.cs.umass.eduUser-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=0.5Accept- Encoding: zip, deflateAccept-Charset: ISO -8859-1, utf-8;q=0.7, *;q=0.7Keep-Alive: 300 Connection: keep-alive a. What is the URL of the document requested by the browser? b. What version of HTTP is the browser running? c. Does the browser request a non-persistent or a persistent connection?

GET /cs453/index.htm1 HTTP/1.1Host: gai a.cs.umass.eduUser-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=0.5Accept- Encoding: zip, deflateAccept-Charset: ISO -8859-1, utf-8;q=0.7, *;q=0.7Keep-Alive: 300 Connection: keep-alive a. What is the URL of the document requested by the browser? b. What version of HTTP is the browser running? c. Does the browser request a non-persistent or a persistent connection?

New Perspectives on HTML5, CSS3, and JavaScript

6th Edition

ISBN:9781305503922

Author:Patrick M. Carey

Publisher:Patrick M. Carey

Chapter12: Working With Document Nodes And Style Sheets: Creating A Dynamic Document Outline

Section12.1: Visual Overview: Exploring The Node Tree

Problem 1QC

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HTTP 1.1 GET with an embedded object. Suppose an HTTP client makes a request to the gaia.cs.umass.edu web server. The client has never before requested a given base object, nor has it communicated recently with the gaia.cs.umass.edu server. You can assume, however, that the client host knows the IP address of gaia.cs.umass.edu. Suppose also that after downloading the base file, the browser encounters a jpeg object in the base html file that is stored on gaia.cs.umass.edu, and therefore makes another GET request to gaia.cs.umass.edu for that referenced jpeg object. How many round trip times (RTTs) are needed from when the client first makes the request to when the base page and the jpeg file are completely downloaded, assuming the time needed by the server to transmit the base file, or the jpeg file into the server's link is (each) equal to 1/2 RTT and that the time needed to transmit the HTTP GET into the client's link is zero? You should assume that persistent HTTP 1.1 is being used.…
Consider the following HTTP request message (Note. Cr means carriage return and lf means line feed) GET /cs453/index.html HTTP/1.1<cr><lf> Host: gaia.cs.umass.edu<cr><lf> User-Agent: Mozilla/5.0 ( Windows;U; Windows NT 5.1; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) <cr><lf> Accept:ext/xml, application/xml, application/xhtml+xml, text /html;q=0.9, text/plain;q=0.8,image/png,*/*;q=0.5 <cr><lf> Accept-Language: en-us,en;q=0.5<cr><lf> Accept-Encoding: zip,deflate<cr><lf> Connection:keep-alive<cr><lf><cr><lf> What is the URL of the document requested by the browser? What version of HTTP is the browser running? Does the browser request a non-persistent or a persistent connection?
USING UBUNTU! Show me all code for each step! Be detailed please. * Apache running * All user html directories named pub. Therefore http://googee.nmu.edu/~fred gets mapped to /home/fred/pub. * Make a new user named WWW. The "/" gets mapped to /home/WWW/pub. Therefore http://googee.nmu.edu gets mapped to /home/WWW/pub/ * A basic index.html file in /home/WWW/pub * Setting such that there are no directory listings and no cgis runnable * The URL http://googee.nmu.edu/icons mapped to /home/WWW/Pictures/icons * Logs stored in /var/log/my_wb_logs in combined logfile format * A web analyzer (webalizer = 0.5, analog = 1.0) that shows activity stats accessable via the web. * The user 'someone' is unable to make web pages in his home directory tree, even if he's tricky. No hand written and fast answer with explanation
The If-Modified-Since header can be used to check whether a cached page is still valid. Requests can be made for pages containing images, sound, video, and so on, as well as HTML. Do you think the effectiveness of this technique is better or worse for JPEG images as compared to HTML?
2.2-6 A detailed Look at an HTTP GET (2). Again, suppose a client is sending an HTTP GET request message to a web server, gaia.cs.umass.edu. The client-to-server HTTP GET message is the following (same as in previous problem): GET /kurose_ross_sandbox/interactive/quotation2.htm HTTP/1.1Host: gaia.cs.umass.eduAccept: text/plain, text/html, text/xml, image/jpeg, image/gif, audio/mpeg, audio/mp4, video/wmv, video/mp4,Accept-Language: en-us, en-gb;q=0.1, en;q=0.7, fr, fr-ch, da, de, fiIf-Modified-Since: Wed, 09 Sep 2020 16:06:01 -0700User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11What is the language in which the client would least prefer to get a response? [You may have to search around the Web a bit to answer this.] [Note: you can find additional questions similar to this here.]
import shodanimport sysimport argparseimport netaddr KEY = ''api = shodan.Shodan(KEY) def lookup_ip(ip):print(ip)print('=' * len(ip)) try:host = api.host(ip)print('Operating System: {0}'.format(host.get('os', '')))print('Hostnames: {0}'.format(', '.join(host.get('hostnames', []))))print('Ports: {0}'.format(', '.join([str(p) for p in host['ports']])))print('Vulns: {0}'.format(', '.join(host.get('vulns', []))))print() except shodan.APIError as e:print('API Error: {0}\n'.format(e)) if __name__ == '__main__':#Parse command line arguments using argparsedesc = """This script will query the Shodan API and return a list of open ports on thespecified IP addresses. The IP address(es) to check can be given as a singleIP, a range of IPs, or in CIDR notation."""parser = argparse.ArgumentParser(description=desc)ipgroup = parser.add_mutually_exclusive_group(required=True)ipgroup.add_argument('-i', action='store', default=None,)metavar="IP",help='A single IP address. ex:…
1. Start up your web browser and go to the http://gaia.cs.umass.edu/wireshark-labs/alice.txt and retrieve an ASCII copy of Alice in Wonderland. Store this file somewhere on your computer2. Next go to http://gaia.cs.umass.edu/wireshark-labs/TCP-wireshark-file1.html. You will find a form to upload the text file.3. Use the browse button in this form to enter the name of the file on your computer containing Alice in Wonderland. Don’t yet press the “Upload alice.txt file” button in the form4. Now start up Wireshark and begin packet capture.5. Returning to your browser press the “Upload alice.txt file” button in the form to upload the file to the gaia.cs.umass.edu server. Once the file has been uploaded, a short congratulations message will be displayed in your browser window.6. Stop the Wireshark packet captureAnswer the following questions:1. What is the IP address and TCP port number used by client computer (source) that is transferring the file to gaia.cs.umass.edu?2. What is the IP…
UNIX answer in sentences and examples please What are the differences between soft and hard linking? What are the advantages and disadvantages of a hard link? When might you use one? When would you not use one?
Explain in plain English the following two regex: egrep ‘(\b\w+\b) \1’ example_2.txt egrep ‘(\b\w+\b) (\b\w+\b) \1 \2 example_2.txt The explanation should include what each symbol or letter in the regex represents Use man pages. If referencing and external source such as a web page, make sure you post the URL in your answer.
1- A user clicks on the link www.msn.com/index.html. Accordingly, the browser asks the cache server for this page, which is available at the cache from Wed 01 Jun 2017 22:54:43 GMT and it is modified yesterday. Write the HTTP 1.1 conditional GET request/response messages sent/received by the cache server. The answer must include the TCP connection (telnet) command and the necessary headers (if exist).
1) To save a presentation so that the audio or video file becomes part of the PPT presentation file, you must ________ it. a. attach b. None of the listed choices c. embed d. link e. encapsulate 2) What is the term for taking strings apart, such as making "John Smith" into "John" and "Smith" ? a. parsing b. split c. none of the listed choices d. concatenation e. structured reference 3) Which are valid methods of doing consolidation across worksheets in the same workbook? a. Data - Consolidate b. formula c. all of the listed choices d. function e. 2 of the listed choices
2.2-3 HTTP 1.1 GET with an embedded object. Suppose an HTTP client makes a request to the xx web server. The client has never before requested a given base object, nor has it communicated recently with the xx server. You can assume, however, that the client host knows the IP address of xx Suppose also that after downloading the base file, the browser encounters a jpeg object in the base html file that is stored on xx, and therefore makes another GET request to xx for that referenced jpeg object. How many round trip times (RTTs) are needed from when the client first makes the request to when the base page and the jpeg file are completely downloaded, assuming the time needed by the server to transmit the base file, or the jpeg file into the server's link is (each) equal to 1/2 RTT and that the time needed to transmit the HTTP GET into the client's link is zero? You should assume that persistent HTTP 1.1 is being used. (You should take into account any TCP setup time required before an…