Describe an experience that caused you to change your perspective and/or opinion.
Option 2: Describe an experience that caused you to change your perspective and/or opinion.
Option 3: What aspect of your current community do you admire and wish to bring to your future college community?
Option 4: Inclusivity involves embracing diversity and working to include people with backgrounds and experiences different from your own. Describe an experience where you have played a role in fostering inclusivity.
when Host A transmits a packet to Host B, how many physical links, data links, and routes will there be along the way? How many packets and frames?
Come up with a Scope for the topic IP addresses.
Answer questions using the figure 1:28 uploaded below:
1:1
In Figure 1:28 below, when Host A transmits a packet to Host B, how many physical links, data links, and routes will there be along the way?
How many packets and frames?
How many switches and routers? (Hint: The answers are in the figure but work it out yourself.)
1-2.
Repeat for Host C sending a packet to Host E.
A non-participating physician provides services to a Medicare patient who has total charges of $100 (before Medicares limiting charge is applied). The physician does not accept assignment, charges the maximum allowable, and submits the claim to Medicare. Assume Medicares approved schedule for these services is $80. A. What is the Medicare portion of the physician payment (that Medicare sends to the patient)? B. What is the patients portion of the payment to the physician (net of the reimbursement from Medicare in the information above? Doctor charge $100 Medicare approved 80 x participating factor 0.95 Medicare allowed 76 x MAC factor 1.15 Max allowable charge 87.4 Medicare payment (80%) 69.92 Patient Payment 17.48 Total allowed 87.4 A. What is the Medicare portion of the physician payment (that Medicare sends to the patient)? B. What is the patients portion of the payment to the physician (net of the reimbursement from Medicare in the information above? 3. Use the information and table below to solve problems 3A and 3B. The Medical College of Virginia, located in the urban city of Richmond, Virginia, has a wage index of 1.8579. A student from nearby Virginia Commonwealth University has just been treated for viral meningitis during a five-day length of stay (LOS), (DRG weight: 1.535). Rate Table Hospital Status Labor Non-labor Urban Areas 2,800 1,250 Rural Areas 2,000 1,000 A. Calculate the DRG operating payment for this treatment. B. Assuming that the wage index remains the same, what would the DRG operating payment be if the same treatment occurred in the rural Pulaski County Hospital in Pulaski, VA? A. Calculate the DRG operating payment for this treatment. B. Assuming that the wage index remains the same, what would the DRG operating payment be if the same treatment occurred in the rural Pulaski County Hospital in Pulaski, VA?
A non-participating physician provides services to a Medicare patient who has total charges of $100 (before Medicares limiting charge is applied). The physician does not accept assignment, charges the maximum allowable, and submits the claim to Medicare. Assume Medicares approved schedule for these services is $80. A. What is the Medicare portion of the physician payment (that Medicare sends to the patient)? B. What is the patients portion of the payment to the physician (net of the reimbursement from Medicare in the information above? Doctor charge $100 Medicare approved 80 x participating factor 0.95 Medicare allowed 76 x MAC factor 1.15 Max allowable charge 87.4 Medicare payment (80%) 69.92 Patient Payment 17.48 Total allowed 87.4 A. What is the Medicare portion of the physician payment (that Medicare sends to the patient)? B. What is the patients portion of the payment to the physician (net of the reimbursement from Medicare in the information above? 3. Use the information and table below to solve problems 3A and 3B. The Medical College of Virginia, located in the urban city of Richmond, Virginia, has a wage index of 1.8579. A student from nearby Virginia Commonwealth University has just been treated for viral meningitis during a five-day length of stay (LOS), (DRG weight: 1.535). Rate Table Hospital Status Labor Non-labor Urban Areas 2,800 1,250 Rural Areas 2,000 1,000 A. Calculate the DRG operating payment for this treatment. B. Assuming that the wage index remains the same, what would the DRG operating payment be if the same treatment occurred in the rural Pulaski County Hospital in Pulaski, VA? A. Calculate the DRG operating payment for this treatment. B. Assuming that the wage index remains the same, what would the DRG operating payment be if the same treatment occurred in the rural Pulaski County Hospital in Pulaski, VA?
How does family space influence a childs learning and development in the following areas? Physical Social/Emotional Cognitive
How does family space influence a child’s learning and development in the following areas?
Physical
Social/Emotional
Cognitive
Creativity
Problem Solving
Language
Part 2
Choose 3 spaces in the home to focus on. List specific strategies or materials that a family can utilize in each space to positively influence a child’s learning and development.
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Healthcare is a very inter-professional industrymany workers in healthcare have varied backgrounds, and have a clinical or non-clinical role. How can good writing skills help to build bridges between different healthcare professionals?
Healthcare is a very inter-professional industrymany workers in healthcare have varied backgrounds, and have a clinical or non-clinical role. How can good writing skills help to build bridges between different healthcare professionals?
How many HTTP GET request messages did your browser send? To which Internet addresses were these GET requests sent?
Wireshark Lab:
HTTP v8.0
Supplement to Computer Networking: A Top-Down
Approach, 8th ed., J.F. Kurose and K.W. Ross
Tell me and I forget. Show me and I remember. Involve me
and I understand. Chinese proverb
© 2005-2020, J.F Kurose and K.W. Ross, All Rights Reserved
Having gotten our feet wet with the Wireshark packet sniffer in the introductory lab,
were now ready to use Wireshark to investigate protocols in operation. In this lab, well
explore several aspects of the HTTP protocol: the basic GET/response interaction, HTTP
message formats, retrieving large HTML files, retrieving HTML files with embedded
objects, and HTTP authentication and security. Before beginning these labs, you might
want to review Section 2.2 of the text.1
1. The Basic HTTP GET/response interaction
Lets begin our exploration of HTTP by downloading a very simple HTML file – one that
is very short, and contains no embedded objects. Do the following:
1. Start up your web browser.
2. Start up the Wireshark packet sniffer, as described in the Introductory lab (but
dont yet begin packet capture). Enter http (just the letters, not the quotation
marks) in the display-filter-specification window, so that only captured HTTP
messages will be displayed later in the packet-listing window. (Were only
interested in the HTTP protocol here, and dont want to see the clutter of all
captured packets).
3. Wait a bit more than one minute (well see why shortly), and then begin
Wireshark packet capture.
4. Enter the following to your browser
http://gaia.cs.umass.edu/wireshark-labs/HTTP-wireshark-file1.html
Your browser should display the very simple, one-line HTML file.
5. Stop Wireshark packet capture.
1 References to figures and sections are for the 8th edition of our text, Computer Networks, A Top-down
Approach, 8h ed., J.F. Kurose and K.W. Ross, Addison-Wesley/Pearson, 2020.
Your Wireshark window should look similar to the window shown in Figure 1. If you
are unable to run Wireshark on a live network connection, you can download a packet
trace that was created when the steps above were followed.2
Figure 1: Wireshark Display after http://gaia.cs.umass.edu/wireshark-labs/ HTTP-
wireshark-file1.html has been retrieved by your browser
The example in Figure 1 shows in the packet-listing window that two HTTP messages
were captured: the GET message (from your browser to the gaia.cs.umass.edu web
server) and the response message from the server to your browser. The packet-contents
window shows details of the selected message (in this case the HTTP OK message,
which is highlighted in the packet-listing window). Recall that since the HTTP message
was carried inside a TCP segment, which was carried inside an IP datagram, which was
carried within an Ethernet frame, Wireshark displays the Frame, Ethernet, IP, and TCP
packet information as well. We want to minimize the amount of non-HTTP data
displayed (were interested in HTTP here, and will be investigating these other protocols
is later labs), so make sure the boxes at the far left of the Frame, Ethernet, IP and TCP
information have a plus sign or a right-pointing triangle (which means there is hidden,
undisplayed information), and the HTTP line has a minus sign or a down-pointing
triangle (which means that all information about the HTTP message is displayed).
2 Download the zip file http://gaia.cs.umass.edu/wireshark-labs/wireshark-traces.zip and extract the file
http-ethereal-trace-1. The traces in this zip file were collected by Wireshark running on one of the authors
computers, while performing the steps indicated in the Wireshark lab. Once you have downloaded the
trace, you can load it into Wireshark and view the trace using the File pull down menu, choosing Open, and
then selecting the http-ethereal-trace-1 trace file. The resulting display should look similar to Figure 1.
(The Wireshark user interface displays just a bit differently on different operating systems, and in different
versions of Wireshark).
(Note: You should ignore any HTTP GET and response for favicon.ico. If you see a reference to
this file, it is your browser automatically asking the server if it (the server) has a small icon file
that should be displayed next to the displayed URL in your browser. Well ignore references to
this pesky file in this lab.).
By looking at the information in the HTTP GET and response messages, answer the
following questions. When answering the following questions, you should print out the
GET and response messages (see the introductory Wireshark lab for an explanation of
how to do this) and indicate where in the message youve found the information that
answers the following questions. When you hand in your assignment, annotate the output
so that its clear where in the output youre getting the information for your answer (e.g.,
for our classes, we ask that students markup paper copies with a pen, or annotate
electronic copies with text in a colored font).
1. Is your browser running HTTP version 1.0 or 1.1? What version of HTTP is the
server running?
2. What languages (if any) does your browser indicate that it can accept to the
server?
3. What is the IP address of your computer? Of the gaia.cs.umass.edu server?
4. What is the status code returned from the server to your browser?
5. When was the HTML file that you are retrieving last modified at the server?
6. How many bytes of content are being returned to your browser?
7. By inspecting the raw data in the packet content window, do you see any headers
within the data that are not displayed in the packet-listing window? If so, name
one.
In your answer to question 5 above, you might have been surprised to find that the
document you just retrieved was last modified within a minute before you downloaded
the document. Thats because (for this particular file), the gaia.cs.umass.edu server is
setting the files last-modified time to be the current time, and is doing so once per
minute. Thus, if you wait a minute between accesses, the file will appear to have been
recently modified, and hence your browser will download a new copy of the document.
2. The HTTP CONDITIONAL GET/response interaction
Recall from Section 2.2.5 of the text, that most web browsers perform object caching and
thus perform a conditional GET when retrieving an HTTP object. Before performing the
steps below, make sure your browsers cache is empty. (To do this under Firefox, select
Tools->Clear Recent History and check the Cache box, or for Internet Explorer, select
Tools->Internet Options->Delete File; these actions will remove cached files from your
browsers cache.) Now do the following:
Start up your web browser, and make sure your browsers cache is cleared, as
discussed above.
Start up the Wireshark packet sniffer
Enter the following URL into your browser
http://gaia.cs.umass.edu/wireshark-labs/HTTP-wireshark-file2.html
Your browser should display a very simple five-line HTML file.
Quickly enter the same URL into your browser again (or simply select the refresh
button on your browser)
Stop Wireshark packet capture, and enter http in the display-filter-specification
window, so that only captured HTTP messages will be displayed later in the
packet-listing window.
(Note: If you are unable to run Wireshark on a live network connection, you can
use the http-ethereal-trace-2 packet trace to answer the questions below; see
footnote 1. This trace file was gathered while performing the steps above on one
of the authors computers.)
Answer the following questions:
8. Inspect the contents of the first HTTP GET request from your browser to the
server. Do you see an IF-MODIFIED-SINCE line in the HTTP GET?
9. Inspect the contents of the server response. Did the server explicitly return the
contents of the file? How can you tell?
10. Now inspect the contents of the second HTTP GET request from your browser to
the server. Do you see an IF-MODIFIED-SINCE: line in the HTTP GET? If
so, what information follows the IF-MODIFIED-SINCE: header?
11. What is the HTTP status code and phrase returned from the server in response to
this second HTTP GET? Did the server explicitly return the contents of the file?
Explain.
3. Retrieving Long Documents
In our examples thus far, the documents retrieved have been simple and short HTML
files. Lets next see what happens when we download a long HTML file. Do the
following:
Start up your web browser, and make sure your browsers cache is cleared, as
discussed above.
Start up the Wireshark packet sniffer
Enter the following URL into your browser
http://gaia.cs.umass.edu/wireshark-labs/HTTP-wireshark-file3.html
Your browser should display the rather lengthy US Bill of Rights.
Stop Wireshark packet capture, and enter http in the display-filter-specification
window, so that only captured HTTP messages will be displayed.
(Note: If you are unable to run Wireshark on a live network connection, you can
use the http-ethereal-trace-3 packet trace to answer the questions below; see
footnote 1. This trace file was gathered while performing the steps above on one
of the authors computers.)
In the packet-listing window, you should see your HTTP GET message, followed by a
multiple-packet TCP response to your HTTP GET request. This multiple-packet
response deserves a bit of explanation. Recall from Section 2.2 (see Figure 2.9 in the
text) that the HTTP response message consists of a status line, followed by header lines,
followed by a blank line, followed by the entity body. In the case of our HTTP GET, the
entity body in the response is the entire requested HTML file. In our case here, the
HTML file is rather long, and at 4500 bytes is too large to fit in one TCP packet. The
single HTTP response message is thus broken into several pieces by TCP, with each
piece being contained within a separate TCP segment (see Figure 1.24 in the text). In
recent versions of Wireshark, Wireshark indicates each TCP segment as a separate
packet, and the fact that the single HTTP response was fragmented across multiple TCP
packets is indicated by the TCP segment of a reassembled PDU in the Info column of
the Wireshark display. Earlier versions of Wireshark used the Continuation phrase to
indicated that the entire content of an HTTP message was broken across multiple TCP
segments.. We stress here that there is no Continuation message in HTTP!
Answer the following questions:
12. How many HTTP GET request messages did your browser send? Which packet
number in the trace contains the GET message for the Bill or Rights?
13. Which packet number in the trace contains the status code and phrase associated
with the response to the HTTP GET request?
14. What is the status code and phrase in the response?
15. How many data-containing TCP segments were needed to carry the single HTTP
response and the text of the Bill of Rights?
4. HTML Documents with Embedded Objects
Now that weve seen how Wireshark displays the captured packet traffic for large HTML
files, we can look at what happens when your browser downloads a file with embedded
objects, i.e., a file that includes other objects (in the example below, image files) that are
stored on another server(s).
Do the following:
Start up your web browser, and make sure your browsers cache is cleared, as
discussed above.
Start up the Wireshark packet sniffer
Enter the following URL into your browser
http://gaia.cs.umass.edu/wireshark-labs/HTTP-wireshark-file4.html
Your browser should display a short HTML file with two images. These two
images are referenced in the base HTML file. That is, the images themselves are
not contained in the HTML; instead the URLs for the images are contained in the
downloaded HTML file. As discussed in the textbook, your browser will have to
retrieve these logos from the indicated web sites. Our publishers logo is
retrieved from the gaia.cs.umass.edu web site. The image of the cover for our 5th
edition (one of our favorite covers) is stored at the caite.cs.umass.edu server.
(These are two different web servers inside cs.umass.edu).
Stop Wireshark packet capture, and enter http in the display-filter-specification
window, so that only captured HTTP messages will be displayed.
(Note: If you are unable to run Wireshark on a live network connection, you can
use the http-ethereal-trace-4 packet trace to answer the questions below; see
footnote 1. This trace file was gathered while performing the steps above on one
of the authors computers.)
Answer the following questions:
16. How many HTTP GET request messages did your browser send? To which
Internet addresses were these GET requests sent?
17. Can you tell whether your browser downloaded the two images serially, or
whether they were downloaded from the two web sites in parallel? Explain.
5 HTTP Authentication
Finally, lets try visiting a web site that is password-protected and examine the sequence
of HTTP message exchanged for such a site. The URL
http://gaia.cs.umass.edu/wireshark-labs/protected_pages/HTTP-wireshark-file5.html is
password protected. The username is wireshark-students (without the quotes), and the
password is network (again, without the quotes). So lets access this secure
password-protected site. Do the following:
Make sure your browsers cache is cleared, as discussed above, and close down
your browser. Then, start up your browser
Start up the Wireshark packet sniffer
Enter the following URL into your browser
http://gaia.cs.umass.edu/wireshark-labs/protected_pages/HTTP-wireshark-
file5.html
Type the requested user name and password into the pop up box.
Stop Wireshark packet capture, and enter http in the display-filter-specification
window, so that only captured HTTP messages will be displayed later in the
packet-listing window.
(Note: If you are unable to run Wireshark on a live network connection, you can
use the http-ethereal-trace-5 packet trace to answer the questions below; see
footnote 2. This trace file was gathered while performing the steps above on one
of the authors computers.)
Now lets examine the Wireshark output. You might want to first read up on HTTP
authentication by reviewing the easy-to-read material on HTTP Access Authentication
Framework at http://frontier.userland.com/stories/storyReader$2159
Answer the following questions:
18. What is the servers response (status code and phrase) in response to the initial
HTTP GET message from your browser?
19. When your browsers sends the HTTP GET message for the second time, what
new field is included in the HTTP GET message?
The username (wireshark-students) and password (network) that you entered are encoded
in the string of characters (d2lyZXNoYXJrLXN0dWRlbnRzOm5ldHdvcms=) following
the Authorization: Basic header in the clients HTTP GET message. While it
may appear that your username and password are encrypted, they are simply encoded in a
format known as Base64 format. The username and password are not encrypted! To see
this, go to http://www.motobit.com/util/base64-decoder-encoder.asp and enter the
base64-encoded string d2lyZXNoYXJrLXN0dWRlbnRz and decode. Voila! You have
translated from Base64 encoding to ASCII encoding, and thus should see your username!
To view the password, enter the remainder of the string Om5ldHdvcms= and press
decode. Since anyone can download a tool like Wireshark and sniff packets (not just
their own) passing by their network adaptor, and anyone can translate from Base64 to
ASCII (you just did it!), it should be clear to you that simple passwords on WWW sites
are not secure unless additional measures are taken.
Fear not! As we will see in Chapter 8, there are ways to make WWW access more secure.
However, well clearly need something that goes beyond the basic HTTP authentication
framework!
Case Study: AIROPLANE Study link to article; https://www.smh.com.au/national/when-can-we-do-research-without-consent-the-tricky-ethics-of-the-airoplane-study-20220823-p5bbz8.html please see below for the articles for this assignment; https://www.mediafire.com/folder/2db9cxxhnvqyj/AIROPLANE PROMPT: Imagine that you are on the research ethics consultation service that must write a report for the case that you picked. This report will be available to the researchers, the IRB, and potentially the research participants. Your report for the case study should be structured with the following 4 required components: Ethical Challenge/Reason for Consult: Identify the chief ethical question that is at the heart of the case.
Case Study:
AIROPLANE Study
link to article; https://www.smh.com.au/national/when-can-we-do-research-without-consent-the-tricky-ethics-of-the-airoplane-study-20220823-p5bbz8.html
please see below for the articles for this assignment;
https://www.mediafire.com/folder/2db9cxxhnvqyj/AIROPLANE
PROMPT:
Imagine that you are on the research ethics consultation service that must write a report for the case that you picked. This report will be available to the researchers, the IRB, and potentially the research participants.
Your report for the case study should be structured with the following 4 required components:
Ethical Challenge/Reason for Consult: Identify the chief ethical question that is at the heart of the case. (10 pts)
Background: Introduce and summarize the case scenario in a narrative in your own words: This should include a description of the particular details and facts that are critical to the case. (20 pts)
Analysis: Using the ethical concepts that have been introduced throughout the class, provide an argument for at least TWO opposing responses to the chief ethical question. (40 pts)
Recommendation: You should offer a recommended resolution to the chief question that you have identified. This resolution can either take the form of advocating ONE of the opposing responses over the other or in the form of offering a way to compromise between the two opposing responses. Your recommendation should include a justification for WHY you are taking this position. (30 pts)
What to Include:
Compose your report as a single document and upload it as a file.
You must cite at least two readings from this unit in your discussion [not including the articles that were assigned for the case].
The report should be around 2000 words.
Include a Word Count.
Include a bibliography.
Resources
The following resources will be helpful for producing work within the genre proposed by this assignment.
NIH Center for Bioethics Research Ethics Consultation Services: https://www.bioethics.nih.gov/clinical/consultation.shtml
Here is an example (de-identified) of a real research ethics consultation attached that the instructor wrote while on consultation service at NIH Center for Bioethics.
In what ways do grandparents influence the development of a child? How can these interactions be beneficial to a developing child?
-Answer the topic questions below. Revise your original post to include information learned from this week’s module. Apply knowledge gained from the articles, videos, powerpoint or chapter readings. This post should include references to the weekly resources. Your reflection should be in paragraph form and include a minimum of 200 words. Title this post “Second Thoughts”.
–
Topic Questions – Part 3
In what ways do grandparents influence the development of a child?
How can these interactions be beneficial to a developing child?
Pulmonary Function: D.R. is a 27-year-old man, who presents to the nurse practitioner at the Family Care Clinic complaining of increasing SOB, wheezing, fatigue, cough, stuffy nose, watery eyes, and postnasal drainageall of which began four days ago. Three days ago, he began monitoring his peak flow rates several times a day. His peak flow rates have ranged from 65-70% of his regular baseline with nighttime symptoms for 3 nights on the last week and often have been at the lower limit of that range in the morning. Three days ago, he also began to self-treat with frequent albuterol nebulizer therapy. He reports that usually his albuterol inhaler provides him with relief from his asthma symptoms, but this is no longer enough treatment for this asthmatic episode. Case Study Questions According to the case study information, how would you classify the severity of D.R. asthma attack? Name the most common triggers for asthma in any given patients and specify in your answer which ones you consider applied to D.R. on the case study.
I need your assistance with a two part case study please.
Pulmonary Function: D.R. is a 27-year-old man, who presents to the nurse practitioner at the Family Care Clinic complaining of increasing SOB, wheezing, fatigue, cough, stuffy nose, watery eyes, and postnasal drainageall of which began four days ago. Three days ago, he began monitoring his peak flow rates several times a day. His peak flow rates have ranged from 65-70% of his regular baseline with nighttime symptoms for 3 nights on the last week and often have been at the lower limit of that range in the morning. Three days ago, he also began to self-treat with frequent albuterol nebulizer therapy. He reports that usually his albuterol inhaler provides him with relief from his asthma symptoms, but this is no longer enough treatment for this asthmatic episode. Case Study Questions
According to the case study information, how would you classify the severity of D.R. asthma attack?
Name the most common triggers for asthma in any given patients and specify in your answer which ones you consider applied to D.R. on the case study.
Based on your knowledge and your research, please explain the factors that might be the etiology of D.R. being an asthmatic patient.
Fluid, Electrolyte and Acid-Base Homeostasis: Ms. Brown is a 70-year-old woman with type 2 diabetes mellitus who has been too ill to get out of bed for 2 days. She has had a severe cough and has been unable to eat or drink during this time. On admission, her laboratory values show the following:
Serum glucose 412 mg/dL
Serum sodium (Na+) 156 mEq/L
Serum potassium (K+) 5.6 mEq/L
Serum chloride (Cl) 115 mEq/L
Arterial blood gases (ABGs): pH 7.30; PaCO2 32 mmHg; PaO2 70 mmHg; HCO3 20 mEq/L
Case Study Questions
Based on Ms. Brown admissions laboratory values, could you determine what type of water and electrolyte imbalance does she has?
Describe the signs and symptoms to the different types of water imbalance and described clinical manifestation she might exhibit with the potassium level she has.
In the specific case presented which would be the most appropriate treatment for Ms. Brown and why?
What the ABGs from Ms. Brown indicate regarding her acid-base imbalance?
Based on your readings and your research define and describe Anion Gaps and its clinical significance.
Submission Instructions:
Write a two-page journal, plus the title page and a reference page on the following statement: Outline the major benefit and cost categories of the public transport subsidy or the temperate zone forestry case studies.
Write a two-page journal, plus the title page and a reference page on the following statement:
Outline the major benefit and cost categories of the public transport subsidy or the temperate zone forestry case studies. For each category, justify your points.
?Written communication: Written communication is free of errors that detract from the overall message.?APA formatting: Resources and citations are formatted according to APA style and formatting.?Length of journal typed, double-spaced pages with no less than a two-page journal ?Font and font size: Times New Roman, 12 point.
