attempt all questions:
In each of the following scenarios there is a relationship to work
life in the IT industry. With each of the following question, ensure
that your answer includes the explanation of how it would be applied
to workplace situations. Write short notes after investigating the
following scenarios: [2+2+4=8 marks]
802.11a supports different modulation techniques, each allowing for
different data rates. This adds complexity and cost to the radio, so
your boss suggests 802.11zzz should only support one modulation
technique, namely the maximum data rate possible. Do you support this
idea? Why or why not?
Your company wants to provide wireless networking services in public
places, such as in an airport lounge, where a wireless networking
device detects multiple wireless networks with different SSIDs. What
is the use of employing an SSID mechanism, state two reasons as to
why it is necessary?
You company provides wireless networking services. One of your
customers complains about the downloading performance being poor.
After investigation, you find that the customer’s 802.11 wireless
network is interfering with his neighbour’s wireless transfers. You
want to improve performance, but you do not have any control over the
neighbour’s wireless connection (The only thing under your control
is your customer’s wireless router). Discuss the suitability of the
following strategies in achieving better performance, e.g., under
what conditions could it help, and when may it not be effective.
Frequency Assignment – Assigning a different channel to the user’s
wireless router.ii. Power Control — Lowering the transmit
power of the user’s wireless router.iii. Enable RTS/CTS
Suppose a large office building has ESS WLAN for the office users. As
a network engineer, you are asked to identify the drawbacks of the
ESS WLAN with respect to roaming users. What would you recommend as a
remedy to this drawback, if there any? [3+3=6 marks]
Explain how does the CSMA/CA in DCF handle media contention. [5
Suppose your company is going to provide services on broadband
wireless access networks. For this reason you are asked to perform a
comparative study on different technologies of wireless broadband
networks. You need to complete the following table based on your
study (please replace Technology T with an appropriate technology
similar to WiMAX and Wi-Fi, also add few additional features in place
of Feature x, y and z): [6 marks]
Define ‘throughput’ in regards to wireless network. Use a
practical method (e.g., using an software) to measure throughput of a
wireless network? You should provide any appropriate screenshots.[5
Suppose you work in a network security company, and you need to
prepare a survey report of a particular security issue of wireless
networking. To start with, select an area of wireless network
security. We have listed some research papers in the ‘recommended
reading/resources’ folder under the Resources for Students section,
which can be helpful in choosing a topic. You need to use more papers
in your selected topic too. This project may be done in teams of 2-3
students. Active participation in the online meeting and on the Forum
will help identify like minded team members. Please write all team
members names and student IDs on the title page of report. You may
choose to work on your own as well. Please read the following
information about a survey. [20 marks]
is a survey?
goal of a survey is to give a broad, structured overview of a
example, suppose you are working for a company that is exploring a
new wireless technology or market, so employees and management are
very not very familiar with this new area. You could be asked to
prepare a written report and a 30 minute presentation to introduce to
area, highlighting different approaches, challenges, opportunities,
survey is different from a set of paper summaries. The survey should
focus on presenting the “big picture” using the papers as
examples. For each topic, we have identified about three papers to
get you started, but we generally expect that you will have to
consult additional materials. Examples may be papers cited in the
original papers, material found on the web, or results from online
libraries, like IEEE Explorer, or the ACM portal.
should submit a written version of your survey. The length should be
from 1000 to 2000 words (about 3-5 pages), not including references.
is no strict template to be followed for this report. However, you
may use the following- abstract/executive summary, importance of your
security issue, state-of-the art, how the researchers are addressing
the issue, which direction the research is going, the probable future
research direction, conclusion/your comments, and references.
assessment task will assess the following learning outcome/s:
able to investigate and evaluate various wireless networking
techniques, protocols and standards.
able to compare and contrast different wireless networks in terms of
size, speed, limitations and applications.
able to investigate and evaluate emerging wireless networking
able to investigate theoretical and practical issues relating to
wireless technology and communicate the results to specialist and
able to explain the challenges and security issues posed by wireless
criteria and standards
1 – Q 5
answers are correct and complete. A comprehensive explanation is
provided with an appropriate example. Appropriate figures were
used, if applicable. Appropriate reference style is used. No
grammatical or spelling mistake.
answer is correct, and a detailed explanation is provided.
References are used. No/only a few grammatical or spelling
answer is correct, but the explanation is not complete. Very few
references are used and not formatted appropriately.
answer is correct but not complete, and only adequate explanation
is provided. No references are used. There are few grammatical
errors and spelling mistakes.
addition, the following rubric will be used to mark Question 6:
well-developed introduction catches the audience’s attention and
creates interest. The beginning of the essay contains background
information so that readers can understand the story’s context. A
guiding sentence close to the beginning conveys the focus of the
creates reader interest and is reasonably well-developed. It
contains some background information and/or details, and it fits
the focus of the essay.
introduction is adequate and includes some background information,
yet it may lack detail and creativity. It may need to do more to
catch the reader’s attention, or it may not quite fit the focus of
details are a random collection of information: They are unclear
or unrelated to the topic. The introduction does not appear to
consider the reader.
body paragraph contains a clear topic sentence that focuses each
paragraph around one point.
in the body paragraphs are clear and well developed, and there are
enough details to create vivid images in the reader’s mind with
the use of vivid/ sense language that creates a dominant
body paragraph contains a clear topic sentence that focuses each
paragraph on one point.
are clear and presented from general to specific, but they are not
well developed. Vivid/sense language is not used as effectively as
it could be used to create imagery for the reader.
paragraphs do not contain a clear topic sentence or might not have
as strong a topic sentence as is needed. There are
details/examples in each paragraph, but they might be either
unclear or not presented from general to specific. Vivid/sense
language is not used effectively, or the details do not create a
dominant impression in the paragraph.
of the paragraphs are missing essential details or the details in
the overall essay focus on one sense when other details could be
offered to enrich the experience.
logical progression of details with a clear and effective order
that enhances the essay and provides a vivid description of the
topic with appropriate and effective transitions.
progression of details with a clear and useful order. Transitions
are present, but they do not enhance the overall effectiveness of
organization is clear. Some transitions are present, while others
are either inappropriate or missing.
flow of the essay from detail to detail is difficult to understand
or implies that important information has been left out.
Flow, tone, word choice
is smooth, skilful, and coherent. Sentences are strong and
expressive with varied structure. Consistent and appropriate tone
and word choice is used throughout the paragraph. Sense language
is used to “show, not tell” the reader what is being
is clear and sentences have varied structure. There is consistent
tone and word choice is appropriate with fairly good use of sense
language to create imagery.
is clear, but sentences may lack variety. The tone is inconsistent
and word choice, while adequate, could be better. While sense
language is used, it is not very effective in creating imagery
appears rushed or underdeveloped.
in-depth and the beyond the obvious, revealing new insights
gained. Author clearly identified the way of the research
approaching by the other researchers and predicts in which way the
research would be going in future.
of sufficient depth. Authors identified the research progression,
and produce speculation of future research on the topic with lack
research is performed. Author presented mainly a description of
different research and showed the correlations of the research of
the topic. However, the authors failed to speculate the future
trends of the research.
research is performed. The research consists predominantly of
information collection and making simple correlations of different
research work on the topic.
consistent errors in punctuation, spelling, grammar, or
few minor consistent errors in punctuation, spelling, grammar, or
capitalization, but they do not detract from the overall meaning
and effectiveness of the paragraph.
few regular errors in punctuation, grammar, spelling, and
capitalisation that. while distracting, the meaning and intent of
the paragraph can still be discerned.
overall presentation of the essay displays a lack of proofreading
and attention to detail. While the essay MIGHT be readable, it is
uncomfortable and unprofessional.
evidence from professionally legitimate sources is given to
support claims. Attribution is clear and fairly represented.
(Version 6) format is used accurately and consistently in the
paper and on the “References” page.
legitimate sources that support claims are generally present and
attribution is, for the most part, clear and fairly represented.
(Version 6) format is used with minor errors.
attributions are occasionally given, many statements seem
unsubstantiated. The reader is confused about the source of
information and ideas.
are frequent errors in APA format.
are seldom cited to support statements.
format of the document is not recognizable as APA.
write the answers in a word document and submit it via Turnitin. Use
Times new roman/Palatino Linotype/Calibri/Cambria/Arial fonts using
10 to 12 font size.
answers to the questions should be precise but complete and
informative. Below is a guideline about expected length of the
answers in terms of the number of words:
1: 100- 200 words for each part;Questions 2, 3 & 5: 400 –
600 words each;
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