SIT202 Computer Networks – custom papers

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Trimester 2, 2016
Problem Solving Report 1
Due Date: 5pm Tuesday August 2nd, 2016
This assessment task must be completed individually, group work and/or collaboration with other students is prohibited.
All work completed/submitted as part of this assessment task must be your own, individual work. Any content drawn from other materials, including unit materials, must be clearly quoted where appropriate, and/or clearly referenced. All students should review and be familiar with the content provided by the University regarding how to reference other materials:
http://www.deakin.edu.au/students/study-support/referencing
And in particular the information provided regarding Academy Integrity:
http://www.deakin.edu.au/students/study-support/referencing/academic-integrity
Unit Learning Outcomes
As per the Unit Guide, the following Unit Learning Outcomes are relevant to this project:
ULO 1. Demonstrate knowledge of concepts and roles of computer architecture and the influence of different layers of communication protocols.
You will be required to demonstrate knowledge of concepts and the architecture of computer networks including protocol layering, and services provided by layers.
ULO 2. Differentiate the types of networks, communication and user oriented protocols, and their influence on transmission speed, reliable delivery and security.
You will be required to demonstrate knowledge of the different types of networks and protocols and how they influence the various characteristics of networks for the transmission of data between devices on a computer network.
Question 1 (8 + 8 + 4 = 20 marks)
Given the following network/s:
Client Switch Router Switch Server
Consider the problem of transferring a large file via the web:
a) Identify how many networks are illustrated and what topologies is/are used in each
network identified. Explain how you identified the networks and topologies in your
answer.
b) For each of the five devices illustrated, indicate which layers of the TCP/IP protocol suite
are certain to be found on that device and briefly explain why.
c) In the Week 1 slides / prescribed reading, it is mentioned that addressing is required at all
layers except the physical layer. If this is true, explain how the physical layer will be able to
deliver/direct the data to its intended destination. Refer to the above scenario/network
when explaining your answer.
Question 2 (6 + 6 + 8 + 12 + 8 = 40 marks)
a) Given that electromagnetic waves can travel at the speed of light, briefly explain how
different signals can arrive at different times when transmitted at the same time. Consider
both wired and wireless media in your answer.
b) Consider a digital signalling approach that uses only two voltage levels to represent binary
data and achieves a data rate of 1Mbps. Explain how increasing the number of voltage
levels could potentially increase the data rate and briefly discuss the potential problems
that may be encountered.
c) A network administrator has identified that several paths throughout the organisation’s
network are experiencing significant latency. Given that latency consists of propagation
time, transmission time, queuing time, and processing delay, discuss how each of these
could potentially be reduced, addressing the identified problem.
d) Consider the Manchester and Differential Manchester encoding schemes.
i. Using the same input of 8 bits, draw an illustration of both schemes. For the input
sequence, you may choose any 8 bits however must include both 1 and 0 bits.
ii. Explain how these schemes achieve self-synchronization.
iii. Explain the relationship between DC components and baseline wandering and how
these schemes resolve this problem.
e) Consider the frequency-division multiplexing and time-division multiplexing techniques.
Give an example where these two techniques could be used at the same time and explain
how they are used.
Question 3
(8 + 12 + 12 + 8 = 40 marks)
a) A colleague is developing a new protocol that will be implemented at the network layer. A key requirement of this new protocol is that data must be delivered in order. There are two data-link technologies to choose from, one is a datagram network and the other is a virtual-circuit network. Identify and discuss two advantages and two disadvantages of each technology.
b) Consider a scenario where a computer is attempting to send data to a device on the same network however the destination is not responding to ARP requests. Identify and briefly explain three reasons why this may occur. Note that the possibilities of the devices being turned off and/or not connected to the network have already been eliminated.
c) Refer to the figure shown on Week 3 Slide 49 for the calculation of CRC codes. Demonstrate the generation of the CRC code using the same approach (same divisor and number of redundant bits) using the 8-bit number 11001101 as input.
d) Consider the following three 16 bit data elements:
1100 1100 1100 1100 0101 1100 0101 1100 0001 0001 0001 0001
Demonstrate the calculation of the 16-bit Internet checksum for this input data.
Marking Scheme
Question 1 (8 + 8 + 4 = 20 marks)
? Part (a)
o (2 marks) Correct identification of number of networks.
o (2 marks) Correct identification of topologies for each network identified.
o (2 marks) Explanation of how networks were identified.
o (2 marks) Explanation of how topologies were identified.
? Part (b)
o (5 marks) Correct identification of layers for each device.
o (3 marks) Explanation of why those layers will be found on that device.
? Part (c)(i)
o (1 mark) Correct explanation of how physical layer will deliver data to destination.
o (3 marks) Explanation of how this applies in the above scenario.
Question 2 (6 + 6 + 8 + 12 + 8 = 40 marks)
? Part (a)
o (3 marks) Explanation of how different signals can arrive at different times.
o (3 marks) Explanation of wired versus wireless media.
? Part (b)
o (3 marks) Explanation of how increasing voltage levels could increase data rate.
o (3 marks) Explanation of potential problems.
? Part (c)
o (2 marks) Discussion of reducing propagation time.
o (2 marks) Discussion of reducing transmission time.
o (2 marks) Discussion of reducing queuing time.
o (2 marks) Discussion of reducing processing delay.
? Part (d)
o (2 marks) Illustration of Manchester Encoding.
o (2 marks) Illustration of Differential Manchester Encoding.
o (3 marks) Explanation of self-synchronization.
o (3 marks) Explanation of DC components and baseline wandering relationship.
o (2 marks) Explanation of how this is resolved by Manchester/Differential Manchester.
? Part (e)
o (2 marks) Reasonable example given.
o (3 marks) Explanation of application of FDM in example.
o (3 marks) Explanation of application of TDM in example.
Question 3 (8 + 12 + 12 + 8 = 40 marks)
? Part (a)
o (2 marks) Datagram network advantages.
o (2 marks) Datagram network disadvantages.
o (2 marks) Virtual-circuit network advantages.
o (2 marks) Virtual-circuit network disadvantages.
? Part (b)
o (1 mark) Identification of first valid reason.
o (3 marks) Explanation of first reason why ARP responses not received.
o (1 mark) Identification of second valid reason.
o (3 marks) Explanation of second reason why ARP responses not received.
o (1 mark) Identification of third valid reason.
o (3 marks) Explanation of third reason why ARP responses not received.
? Part (c)
o (5 marks) Correct application of division.
o (3 marks) Correct quotient.
o (1 marks) Correct CRC code.
o (3 marks) General working.
? Part (b)
o (2 marks) Correct application of addition.
o (2 marks) Correct demonstration of wrapping overflow bits.
o (1 marks) Correct checksum.
o (3 marks) General working.

 

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Bus 119 wk 1 discussion 2 (do not change the price)

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How   to handle citations and quotations

Informal or formal   citations are expected throughout your discussion posts. Informal citations   just let us know where you found the information that influenced your   thoughts — apa formatting is not required in discussion posts (however,   strict apa formatting IS required in your papers).  But don’t just copy   and paste a quotation and plop it into your work thinking it will show   that you’ve read the material. Just because you quote something doesn’t mean   you understand it. To show that you understand what you’ve read, paraphrase   and summarize. Quotations should be used sparingly — when something has been   said that is particularly enlightening or expressed in a particularly   eloquent way or when it is a compelling argument that supports or   refutes your own point of view. Otherwise, paraphrase or summarize, and then   tell where you got your idea(s) in formal or informal citations. Generally   speaking, you do not need to put definitions in quotations. If you need to   define a term (and this isn’t always necessary), tell why you need to define   it, then paraphrase or summarize a definition you want to use to support your   case, and then cite the source.  Don’t simply put the Northouse   reference information at the bottom of all your posts. Show where in   your post the author influenced what you are saying. No general   reference at the bottom of your post is required. If you do decide to use a   direct quotation, place it in context. You are the one making the points, not   an outside resource, and the citation is there to support the points you are   making. So frame each direct quote with context. Tell why this quotation is   there, its significance to the topic, how it will enlighten the reader, what   you want the reader to get from it.  Just plopping a quote into your   work without context and without summarizing or paraphrasing it doesn’t show   a familiarity with the material. It doesn’t show that you know what you are   talking about necessarily. It shows that you know how to copy and   paste.  Make quotations count! Use them sparingly for effect and for   forceful support of your argument.

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Oct   31 at 12am

 

An   important question you should know about

An important   question I ask myself when grading discussion posts is . .  Could this   person have written these posts without reading the course material? If the   answer is yes, your score will not be as high as it could have been if you   had been making connections to what you learned from the course material and   making them relevant to the discussion topic. Review my announcement on how   casual conversations differ from classroom discussions

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Please   write in paragraphs

Please write your   discussion posts in paragraphs, with one topic per paragraph. A strong   paragraph has an introductory topic sentence and ends with a sentence that   transitions to the next topic/paragraph. This makes long discussion posts   easier to read. Part of your writing score will depend on your ability to   write in paragraphs.

Text

Northouse,   P. G. (2018). Introduction   to leadership: Concepts and practice (4th ed.). Retrieved   from https://content.ashford.edu/

  • This        text is a Constellation™ course digital materials (CDM) title.

Article

Cave,   A. (2014, April 22). 10 leadership lessons from Manchester United’s hiring and   firing of David Moyes (Links to an external site.)Links to an external   site.. Retrieved from   http://www.forbes.com/sites/andrewcave/2014/04/22/ten-leadership-lessons-from-manchester-uniteds-hiring-and-firing-of-david-moyes/

Webpage

Covey,   S. R. (n.d.). The   7 habits of highly effective people: Habit 2: Begin with the end in mind (Links   to an external site.)Links to an external site.. Retrieved from   https://www.stephencovey.com/7habits/7habits-habit2.php

  

Course   Guide

For   a printable version of the course, download the Course GuidePreview the documentView in a new window.

Oct   31 at 12am

 

Leadership Lessons

Read the article, “10 leadership lessons from Manchester United’s hiring and firing of David Moyes (Links to an external site.)Links to an external site.“. Compare the 10 lessons in the article to the leadership theories in your textbook – what leadership theories is the author of the article applying in his suggestions, and how? Do you agree with the lessons in the article? Why or why not? Describe how you could apply one of the 10 leadership lessons to improve your current or previous workplace. Respond to at least two of your classmates’ posts.

CASE STUDY – Coursework Geeks

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Case study, download and read the attached case study.  Once completed, answer the three questions at the end of the case.
Your paper should be in APA 6th edition format and should answer all three questions completely with rationale and literature support.  Each new heading will depict the question being answered.  Your paper should be within 4-6 pages, not including your cover page and references page.  You will  be required to provide and use a minimum of 3 peer reviewed references, with the oldest being from 2015.
This is an individual assignment.
 
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Advanced medical coding assigment | Nursing homework help

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1. A 61-year-old female patient is seen for a complaint of

severe heartburn, lightheadedness, skin reddening, and

shortness of breath. The physician renders a diagnosis of

GERD, sickle cell anemia, lymphangitis, and diaphragmatic

paralysis. What code(s) should be assigned?

ICD-10: __________________________________________

2. A 37-year-old patient comes in complaining of swollen

joints and headaches. The physician’s diagnosis is SLE.

The patient also has rheumatoid arthritis and asthma

with status asthmaticus. What code(s) are assigned?

ICD-10: __________________________________________

3. A 52-year-old patient is seen for mouth pain, knee pain,

and fluid buildup in the chest. The physician renders a

diagnosis of pulp degeneration, old disruption of the posterior

cruciate ligament, and pleural effusion. The

physician also performed a chest tube insertion (draining

the right pleural cavity with a drainage device using a

percutaneous approach) prior to diagnosing the patient’s

pleural effusion. What diagnosis and procedure code(s)

are assigned?

ICD-10: __________________________________________

4. A 30-year-old male is admitted to the hospital with

lymphadenitis, acute lymphoid leukemia in relapse, and

von Willebrand disease. What code(s) are reported?

ICD-10: __________________________________________

5. A 47-year-old male is involved in a motor vehicle accident.

He was driving on the highway when his car

collided with another vehicle. He was brought to the hospital

with a lower arm injury. The physician obtained an

x-ray of the arm and, after careful review and interpretation

of the x-ray, rendered a diagnosis of lower arm

fracture. The physician repaired the arm fracture using

open reduction and internal fixation (reposition of the

right radius with internal fixation using a percutaneous

endoscopic approach). What diagnosis and procedure

code(s) are reported?

ICD-10: __________________________________________

Review each of the following medical coding scenarios. Assign

the CPT code for the services and procedures indicated in

each scenario.

1. A 48-year-old male patient comes to the emergency room

with complaints of GERD. The physician performs a

laparoscopic fundoplasty with a Collis gastroplasty. What

CPT code(s) should be assigned?

CPT: _________________________________________________

2. A 40-year-old female patient is diagnosed with cervical

cancer. She also complains about difficulty breathing.

She is admitted to the hospital, where the physician

begins to perform a bronchoscopy after anesthesia

administration. However, the procedure is discontinued

due to unforeseen complications. Later the same day, a

bilateral cervical lymphadenectomy is performed to

address the patient’s cervical cancer. What CPT code(s)

are assigned?

CPT: _________________________________________________

3. A 50-year-old patient is admitted for a repair of a laceration

to the diaphragm resulting from an accident

involving a bus that ran into a ditch. She also received

eight trigger point injections into the transverse abdominus

muscle due to pain resulting from the accident.

What CPT code(s) are assigned?

CPT: _________________________________________________

4. A 23-year-old patient comes to the emergency room after

being physically assaulted by her boyfriend. She complains

of nasal pain and bleeding from the left nostril.

The physician obtains an x-ray of the nasal cavity, and

the x-ray confirms a nasal septum fracture. The physician

performs an open treatment of the nasal fracture

with a concomitant open treatment of the fractured septum.

What CPT code(s) should be assigned?

CPT: _________________________________________________

5. A 33-year-old patient is seen in the emergency room due

to complaints of headaches and congestion. The final

diagnosis is maxillary sinus infection. The physician performs

a nasal endoscopy with a maxillary antrostomy.

She also removes some tissue from the maxillary sinus.

What CPT code(s) should be assigned?

CPT: _________________________________________________

Review each of the following medical coding scenarios. Assign

the HCPCS code(s) required for each coding scenario.

1. A 49-year-old patient is admitted to the hospital for

repair of an ankle fracture. On the day of discharge, the

physician prescribes a dynamic ankle extension and flexion

device with a soft interface material. The ankle device

is adjustable. What HCPCS code(s) are assigned?

HCPCS: ______________________________________

2. A 26-year-old patient was admitted to the hospital with

acute exacerbation of allergic asthma. During the course

of the hospitalization, the patient received 5 mg of omalizumab

administered subcutaneously. What HCPCS

code(s) are assigned?

HCPCS: ______________________________________

3. A 58-year-old patient is admitted to the hospital due to

severe anemia. He receives six units of fresh frozen

plasma on the first day of admission. What HCPCS

code(s) should be assigned?

HCPCS: ______________________________________

4. A 26-year-old patient comes to the emergency room complaining

of watery diarrhea for five days. She receives 25

mcg of octreotide acetate administered

intravenously. What HCPCS code(s) are assigned?

HCPCS: ______________________________________

5. A patient is brought to the emergency room after ingesting

a bottle of verapamil as a suicide attempt. The

physician ordered 10mg of glucagon HCL to be administered

as an antidote mixed in 100 ml of D5W in an IV

over 2 minutes. What HCPCS code(s) should be

assigned?

HCPCS: ______________________________________

Review the following medical coding scenario. Assign all of

the ICD-10 and CPT codes for the diagnoses and procedures

indicated in the scenario.

After being evaluated by his gastroenterologist, Mr. Jackson

was sent to the hospital for a diagnostic esophagogastroduodenoscopy.

He is having several symptoms that indicate a

potential gastrointestinal condition. As a result, he was admitted

in observation. His symptoms include vomiting, weight

loss, and dysphagia. The esophagogastroduodenoscopy reveals

that the patient has low-grade Barrett’s esophagus, GERD

with reflux esophagitis and a non-obstructing hiatal hernia.

Patient was also incidentally diagnosed with Crest Syndrome

(CRST), which correlates with his complaint of dysphagia.

After the procedure, the patient was noted to have several

PVC’s on his EKG. These resolved shortly after the patient

arrived in the recovery room. Based on the results of the

detailed history, detailed, exam, and straight forward medical

decision making, it was decided that the patient could be discharged

home on the same day with instructions for a follow

up office appointment in 2 days. Code this scenario.

ICD-10: ____________________________________________________

CPT: ____________________________________________________