Is there a need for a network layer in a broadcast network?
Wireless Networking and Security Exam 1
Question 1: Simplify the following expression (10 pts):
cos (2πft + π/2) + sin(2πft – π) Question 2: Support the fact that, in a transmission system using radio frequencies, increasing the transmission frequency by a factor of 3 incurs a penalty (loss) of approximately 9.5 dB (10 pts). Question 3: How much bandwidth does a communication channel need to achieve a capacity of 40 Mbps with a Signal-to-Noise ratio of 255? (Note: 1 Mbps is 1,000,000 bps) (10 pts) Question 4: Given the following parameters:
N = number of hops between two end systems L = message length in bits (e.g., length of the original message, before being divided in several packets) B = data rate in bps, on all links P = fixed packet size in bits H = overhead (header) in bits per packet D = propagation delay per hop in second
The number of packets (Np) required to send the original message of length L (in bits) can be computed as:
𝑁𝑁𝑝𝑝 = � 𝐿𝐿
𝑃𝑃 − 𝐻𝐻 �
The total end-to-end time delay for packet switching is calculated using the formula:
T = Np * (P/B) + (N-1) * (P/B) + N * D Let us assume that L/(P-H) is an integer. What value of P, as a function of N, L, and H would minimize the end-to-end time delay? (10 pts) Question 5: A Virtual Channel Identifier (VCI), in the header of an ATM cell, is used for routing to and from the end user. Explain why a VCI is needed together with the Virtual Path Identifier (VPI). (10 pts) Question 6: Is there a need for a network layer in a broadcast network? Justify your answer. (10 pts)
Question 7: Describe the significance of the following IPv4 header fields (10 pts):
(a) Time to live (b) Protocol Question 8: The transmit power of a station is 57.67 dBm (10 pts).
(a) How much power in KW is this equivalent to? (b) Using an antenna with 1 GHz carrier frequency, what will be the received power in dB at
a free space distance of 0.5 km? Question 9: Research Problem: Describe in detail the various diversity techniques in wireless communication systems (10 pts). Question 10: Research Problem: What is carrier-to-noise ratio (CNR)? Describe why, in general, raising radio frequency (RF) levels improves the carrier-to-noise ratio (10 pts).
What conduct is the government trying to preclude?
Why should the government care if physicians refer their patients to other entities in which they have a financial interest? What conduct is the government trying to preclude?
Who has the right to make the decision on behalf of the client? Why?
Legal and Ethical Issues: Case Study
Cathy Smith, an eighty-eight-year-old woman, was admitted to the emergency room from the nursing facility with acute respiratory distress. Although Smith does not have a living will, her daughter Rose, a health care professional, has the power of attorney (POA) to make her mother’s health decisions.
Smith suffers from end-stage Alzheimer’s disease and recently experienced congestive heart failure. Her condition is alarming. The doctors want to place her on life-support equipment, including a ventilator. Smith’s son, Andrew, agrees with the doctor’s decision. However, Rose states her mother would never want to be placed on life-support machines to prolong her life.
Analyze the scenario and answer the following questions:
- What is the autonomy-beneficial conflicts between Rose and Andrew related to placing their mother on life support in this case? Who has the right to make the decision on behalf of the client? Why?
- What are the ethical issues related to the competency and decision-making capacity of the client while making the health care decisions? Do these issues impact the services offered in long-term care? How?
- What are some of the critical issues related to informed consent? Who has the right to assume this responsibility? Why?
Prepare a trend analysis of all financial statements in Exhibit 3 using 2007 as the base year. Interpret the analysis. What are your main observations?
Discussion Questions–Abu Dhabi National Hotels:
1) Prepare a trend analysis of all financial statements in Exhibit 3 using 2007 as the base year. Interpret the analysis. What are your main observations?
2) What are the strengths and weaknesses of ratio analysis? What are its inherent limitations? When is it more likely to be useful? Calculate ADNH Profitability, Efficiency, Liquidity, and Leverage Ratios (focus on the ones we discussed in class). Perform DuPont De-Composition and interpret it. Comment on time trends in ratios.
3) Why is segment analysis useful? Find a section of the Accounting Standards Codification that provides guidance for segment disclosure. Demonstrate in class how you searched for it.
4) Calculate ratios in step (2) on segment level. How does it help your conclusions about the company?
Explain the risk assessment you would use to inform your treatment decision making.
The Assignment (1–2 pages)
· Recommend one FDA-approved drug, one off-label drug, and one nonpharmacological intervention for treating your assigned disorder in children and adolescents.
· Explain the risk assessment you would use to inform your treatment decision making. What are the risks and benefits of the FDA-approved medicine? What are the risks and benefits of the off-label drug?
· Explain whether clinical practice guidelines exist for this disorder and, if so, use them to justify your recommendations. If not, explain what information you would need to take into consideration.
· Support your reasoning with at least three scholarly resources, one each on the FDA-approved drug, the off-label, and a non-medication intervention for the disorder. Attach the PDFs of your sources
When looking at healthcare systems across the world explain how America’s healthcare system could be improved
Module 06 Content
- Instructions
Select a country with a universal healthcare system (Canada, Australia, New Zealand or any other). Once selected, compare their approach to healthcare spending to that of the U.S. Write a 2-3-page summary that includes the following:- Discuss the differences in healthcare politics
- Explain how the two countries finance their healthcare systems
- Insight on how political decisions impact your role and that of your organization
- When looking at healthcare systems across the world explain how America’s healthcare system could be improved
- Your recommendation for America to remain as a free-market system or transition to a universal healthcare system
- Use at least 2 credible sources from the Rasmussen College Library.
- Include an APA formatted reference page.
What are one or two key ideas that the author is putting forward?
What are one or two key ideas that the author is putting forward?
How does the author reflect doubt or misgivings about the certainty of modernity and progress during the period 1919-1945?
Why would a cyber attack be appealing to terrorists?
Cyber Crime and Terrorists
First, begin by watching the following video:
Cyber Security Operations Center
For your main post,
Pick one of the two discussion questions below to answer in your HS Chat; please be sure to present research to support your discussion and document that research in APA format. Your initial post should be in by 11:59 p.m. EST on Thrusday.
1. Why would a cyber attack be appealing to terrorists?
2. How does a HAWALA operate?
Please use a case example in your answer, as well as research to support your opinion.
Requirements
· Your main post should be 350+ words.
· Your main post should use APA format.
· Your main post should include at least one peer reviewed article.
As a result of this class, how will you immediately apply your problem solving skill at home or work?
Assignment: Reflection Journal
Overview
Since you started PSY101, Smarter Decisions through Psychology, you have had the opportunity to learn about fascinating topics, including the brain and nervous system, emotions, motivation, and stress management. As you learned the psychological concepts and principles covered in this course, you’ve gained insight into what influences decision making and how you can apply what you’ve learned to make better decisions in your own life and career. Through your study of psychology, you’ve also started honing two essential employability skills:
Problem solving to identify and frame problems, explore ideas, and create effective, ethical, and evidence-based solutions based on psychological concepts and principles.
Self and social awareness to monitor one’s own and others’ emotions, to discriminate among them, and to use the information to receive feedback, reflect, and guide one’s thinking.
Questions
In this journal, you will share your reflections on your time in PSY101 by answering the questions below. For each of the questions, write a paragraph-length response (5-7 sentences).
1.As a result of this class, how will you immediately apply your problem solving skill at home or work? Write a paragraph with two examples of how you can immediately apply your problem solving skills at home or work.
2. As a result of this class, how have you grown in terms of your own self & social awareness skill? Write a paragraph with two examples of how you have grown in your own self & social awareness.
3. Of all of the Strayer videos, which one was most relevant for you? Why? Write a paragraph that clearly identifies one of the videos and why it was relevant to your life.
4. What is one psychological concept that you have learned in this class that was most helpful to you? How will you use this concept to succeed in your personal or professional life? Write a paragraph where you identify a concept that you learned and how you can use that in your own life (personal or professional).
Instructions
Use the Reflection Journal Template to record your responses. For each question, you should write a paragraph-length response (5–7 sentences) to receive credit for this assignment. Once you have completed your work, save the file and upload it to the assignment submission area.
Strayer University Writing Standards Note: Review the Strayer University Writing Standards. These are provided as a brief set of user-friendly guidelines that make it easier for you to learn the behaviors of appropriate writing (i.e., clear, professional, and ethical writing). This is meant to support the use of the template provided.
Explain how the two countries finance their healthcare systems
Module 06 Content
- Instructions
Select a country with a universal healthcare system (Canada, Australia, New Zealand or any other). Once selected, compare their approach to healthcare spending to that of the U.S. Write a 2-3-page summary that includes the following:- Discuss the differences in healthcare politics
- Explain how the two countries finance their healthcare systems
- Insight on how political decisions impact your role and that of your organization
- When looking at healthcare systems across the world explain how America’s healthcare system could be improved
- Your recommendation for America to remain as a free-market system or transition to a universal healthcare system
- Use at least 2 credible sources from the Rasmussen College Library.
- Include an APA formatted reference page.
