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Imagine that you are trying to visit www.enterprise.com, but you don’t remember the IP address the web-server is running on

Network Architecture I (CSEE 5110)

Assignment #

Description

· The goal of this assignment is to assess your understanding of the material learned so far. You will need to upload your answers to canvas through the provided link of the Assignment #1.

Answers to the questions should be directly reported in this word file (inside the dedicated box). Answers should not be handwritten. You will need to upload to canvas a doc file an no images/pictures allowed in the files. No compliance to these rules will lead to zero.

This assignment will be counted for 10% of your total grade.

1) DNS – Basics

Imagine that you are trying to visit www.enterprise.com, but you don’t remember the IP address the web-server is running on.

Assume the following records are on the TLD DNS server:

· (www.enterprise.com, dns.enterprise.com, NS)

· (dns.enterprise.com, 146.54.33.180, A)

Assume the following records are on the entreprise.com DNS Server:

· (www.enterprise.com, west3.enterprise.com, CNAME)

· (west3.enterprise.com, 142.81.17.206, A)

· (www.enterprise.com, mail.enterprise.com, MX)

· (mail.enterprise.com, 247.29.126.93, A)

Diagram  Description automatically generated

Q1: What transport protocol(s) does DNS use: TCP, UDP, or Both?

Q2: What well-known port does DNS use?

Q3: How many types of Resource Records (RR) are there?

Q4: Can you send multiple DNS questions and get multiple RR answers in one message? Answer with Yes or No

Q5: To which DNS server does a host send their requests to? Answer with the full name

Q6: Which type of DNS server holds a company’s DNS records? Answer with the full name

Q7: In the example given in the problem, what is the address of the DNS server for enterprise.com?

Q8: When you make the request for www.enterprise.com, your local DNS requests the IP on your behalf. When it contacts the TLD server, how many answers (RR) are returned?

Q9: In the previous question, there were two responses, one was a NS record and the other an A record. What was the content of the A record? Answer with the format: “name, value”

Q10: Assume that the enterprise.com website is actually hosted on west3.enterprise.com, what type of record is needed for this?

Q11: Now imagine we are trying to send an email to admin@enterprise.com, and their mail server has the address mail.enterprise.com. What type of record will we receive?

Q12: In that MX record, what are the contents? Answer with the format: “name, value”

Q13: Does your local DNS server take advantage of caching similar to web requests? Answer with Yes or No

Answers: Q1. Q2. Q3. Q4. Q5. Q6. Q7. Q8. Q9. Q10. Q11. Q12. Q13.

2) Comparison of client-server and peer to peer file distribution delays

In this problem, you’ll compare the time needed to distribute a file that is initially located at a server to clients via either client-server download or peer-to-peer download.

The problem is to distribute a file of size F = 5 Gbits to each of these 8 peers. Suppose the server has an upload rate of u = 85 Mbps. The 8 peers have upload rates of: u1 = 11 Mbps, u2 = 20 Mbps, u3 = 17 Mbps, u4 = 20 Mbps, u5 = 20 Mbps, u6 = 24 Mbps, u7 = 17 Mbps, and u8 = 26 Mbps The 8 peers have download rates of: d1 = 15 Mbps, d2 = 34 Mbps, d3 = 38 Mbps, d4 = 18 Mbps, d5 = 13 Mbps, d6 = 38 Mbps, d7 = 23 Mbps, and d8 = 40 Mbps

Q1: What is the minimum time needed to distribute this file from the central server to the 8 peers using the client-server model?

Q2: What is the minimum time needed to distribute the file using peer-to-peer download?

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Ben Halls is trying to decide whether to lease or purchase a new car costing $21,000

Financial Planning Exercise 2
Lease versus purchase car decision

Use Worksheet 5.1. Ben Halls is trying to decide whether to lease or purchase a new car costing $21,000. If he leases, he’ll have to pay a $600 security deposit and monthly payments of $399 over the 36-month term of the closed-end lease. On the other hand, if he buys the car, then he’ll have to make a $2,900 down payment and will finance the balance with a 36-month loan requiring monthly payments of $597.55; he’ll also have to pay a 7% sales tax ($1,470) on the purchase price, and he expects the car to have a residual value of $5,300 at the end of three years. Ben can earn 4 percent interest on his savings. Use the automobile lease versus purchase analysis form in Worksheet 5.1 to find the total cost of both the lease and the purchase, and then recommend the best strategy for Ben. For the purchase interest rate, use interest rate earned on savings of 4% (Item 6 on Worksheet) and interest rate on monthly loan payment of 11.58% (Item 14 on Worksheet)

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A thesis is “a specific point that you are trying to establish – something that you are trying to convince the reader to accept

papers will follow similar directions. This first one will probably be the hardest, even as we dive into more advanced material. This is not an English paper. This is not a history paper. Please give me full effort and trust that it will reflect in your grade. We’ll do a draft first, I will give you feedback, and then we’ll submit a final paper later. Don’t plagiarize. If you’d like even more details for how to write a philosophy paper, here’s a very helpful link:http://www.sfu.ca/philosophy/resources/writing.htmlHere are your directions:The rough draft will be 2.5 pages. The final draft will be 4 full pages.Write an intro with three sentences or less. One sentence must be your thesis. A thesis is “a specific point that you are trying to establish – something that you are trying to convince the reader to accept”. The thesis is your conclusion, and your job will be to defend the thesis. The entire point of the intro paragraph in a philosophical paper is simply to present your thesis. You honestly want as short of an intro as possible since it is the meat and potatoes of the paper are in the argument. For this paper, you have two options, Innate Ideas are true or they’re not. Your thesis statement also needs to state the fundamental reason(s) that make(s) you correct. For example, if I want to argue that cereal is a better breakfast food than eggs, I need to say, “Cereal is a better breakfast food than eggs because cereal is faster to prepare and I’m a horrible cook.” In that thesis, the entire paper is already given away. It gives two reasons, and that will be my argument. That’s what you want. A good thesis awards 20 points. Do not “fence-sit”. And for the record, eggs are great.After stating your thesis, you will need to immediately define your terms. This is absolutely the most fundamental problem in most arguments: no one knows what people are really talking about. In my cereal vs eggs example, I actually imply that cereal is not “cooked” even though they are both “prepared”. Little things like that matter A LOT when we talk about more important topics. You will describe Descartes/Socrates’ philosophy as they describe it, then explain it in your own words. Include examples. Good description awards 40 points.Now that your topic has been well described, you can argue. You will be evaluating the claims of Socrates and Descartes, and supporting whatever reasons you’ve given for your claim. Support can be all sorts of things, but in general, the supports should be more obviously true to help walk the reader to the truth of your thesis. Do not use a shotgun approach to argument, where you take a thousand little reasons and hope they are strongest. The simple argument is the strongest, and you should build up to your conclusion from a strong foundation. In my cereal vs eggs example, I would cite that cooking eggs takes longer, I would tell you why time is so important (maybe because we’re all rushing to start our day), I would need to say why my poor cooking skills matter, etc. Good argumentative form awards 20 points.The next step is done for integrity and logic both. You’ll need to respond to objections and offer concessions. In my cereal vs. eggs example, I would need to expect a reader to think “What if I have lots of time? What if it’s a Saturday? Why does your bad cooking mean I shouldn’t cook eggs for me?”. At the end of a good philosophical paper, these kinds of things are addressed. Sometimes, this is actually the longest section. Concessions are valuable because, if you identify the limits of your logic, it helps people understand your claim. Moreso, it might help you realize that you need to beef up your reasons or change your claim entirely. Specifically, in this section, I want you to focus on objections. Say why someone might disagree with you, and why their reason is mistaken. This means you have to anticipate a point of disagreement and address it immediately. This strengthens your reasons for your position. In a full book, you would address any and all possible objections, but I really only need you to pick one or two that you think are most common. Good objection anticipation awards 20 points.If you would like, you may have a concluding paragraph to summarize everything, but honestly, philosophical papers don’t always need these. Do whatever makes you feel comfortable.Don’t plagiarize. Don’t even get close. Put quotes on anything that needs quotes

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  • Premium papers. We provide the highest quality papers in the writing industry. Our company only employs specialized professional writers who take pride in satisfying the needs of our huge client base by offering them premium writing services A thesis is “a specific point that you are trying to establish – something that you are trying to convince the reader to accept

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Persuasive Essay trying to influence you to accept or agree with your position on this issue

The purpose of the Persuasive Essay assignment is to choose a topic that has some debatable issue. You will then take a position on that issue and write a 2 full-page Persuasive Essay trying to influence you to accept or agree with your position on this issue.

Here are the details:

1. Read the Lecture Notes in Unit 5 on persuasive writing. Also, especially read Chapter 10.9 in the online text for ideas on how to construct an approach persuasive writing. Here is the link to that chapter:

https://open.lib.umn.edu/writingforsuccess/chapter/10-9-persuasion/ (Links to an external site.)

While all the information in this chapter can be helpful, what is especially helpful is the information under the heading “Writing a Persuasive Essay.”

2. Choose a topic. Your topic will be on some issue of debate where you are able to take a side on that issue. The instructor of your class will let you know if you may write on any topic or if there will be limitations on what you may choose to write on.

3. Unlike the previous two-unit essays, there is no required outline or pattern that you have to use for organizing this essay. However, you will want to plan your organization so your ideas connect and make sense to the reader. You may use either of the patterns from the previous two units. Also, you may look at the different patterns presented in Chapter 10 for ideas. As a bit of advice, the structure is shown in Chapter 10.9 under the heading “Structure of a Persuasive Essay” is a helpful model to look at.

4. Since this essay is more persuasive instead of argumentative, you do not have to do any formal research, but you should have explanations and support for any positions you offer.

5. The essay will be at least two full pages long but no more than four pages (unless you have your instructor’s permission to go over 4 pages). You will use the MLA formatting guidelines that you used in the previous essays.

6. Include a title for your essay.

7. After writing the essay, be sure to take the time to read it several times for revision and editing. It would be helpful to have at least one other person proofread it as well before submitting the assignment

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