حلول واجبات الجامعة العربية المفتوحة ( TECHNOLOGY SHARING CENTER )
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حلول واجبات الجامعة العربية المفتوحة ( TECHNOLOGY SHARING CENTER )

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 حل واجب t215a spring 2017

استعرض الموضوع السابق استعرض الموضوع التالي اذهب الى الأسفل 
كاتب الموضوعرسالة
aou.tma2016



عدد المساهمات : 62
نقاط : 148
تاريخ التسجيل : 15/11/2016

بطاقة الشخصية
حلول واجبات الجامعة العربية المفتوحة:

مُساهمةموضوع: حل واجب t215a spring 2017   السبت مارس 25, 2017 8:59 pm

1
T215A: Communication and information technologies (I)
Spring 2016/2017
______________________________________________________________________________
Tutor-Marked Assignment
_____________________________________________________________________________
Cut-off date: To be assigned.
_____________________________________________________________________________
Total Marks: 100
Important Note: This TMA consists of FOUR questions.
TMA Contents
Question 1 (40 marks)
Question 2 (20 marks)
Question 3 (24 marks)
Question 4 (16 marks)
Plagiarism Warning:
As per AOU rules and regulations, all students are required to submit their own TMA work and avoid plagiarism. The AOU has implemented sophisticated techniques for plagiarism detection. You must provide all references in case you use and quote another person's work in your TMA. You will be penalized for any act of plagiarism as per the AOU's rules and regulations.
Declaration of No Plagiarism by Student (to be signed and submitted by student with TMA work):
I hereby declare that this submitted TMA work is a result of my own efforts and I have not plagiarized any other person's work. I have provided all references of information that I have used and quoted in my TMA work.
Name of Student:………………………………..
Signature:…………………………………………...
Date:……………………………………………………
2
Question 1: Wireless network:
This question carries 40% of the marks for this assignment.
More and more organizations are incorporating mobile access via wireless networks into their remote access strategies. These organizations are deploying mobile solutions to achieve specific business goals, improve productivity and reduce costs. Using the internet and other resources (e.g., books and AOU e-library), write a report explaining the following factors:
 Discuss the threats inherent in moving to wireless networks. (8 marks)
 Explain briefly, some of the techniques used to safeguard against these threats? (6 marks)
 What does IPsec stands for? Why is it used for? (6 marks)
 What is Mobile IP? Explain briefly its operation? (6 marks)
 Discuss briefly additional security measures (at least three) that can be used to further secure and protect the mobile devices? (6 marks)
Report Writing:
Please adhere to the following guidelines for writing your report:
Your report should be between 500 and 600 words in length. Under-length and over-length reports will be penalized.
Your report should include at least two figures and/or tables. Do not forget to include a caption for each figure/table and to use cross-referencing. (3 Marks)
Ensure that your report meets the objectives, has an appropriate structure and style, and that its technical level is appropriate for the audience, purpose and medium. For more details, you can refer to the T215 textbooks (Block 1 – Part 7; Block 2 – Part 7 and Block 3). (2 marks)
In order to be allocated marks for your answer, you must demonstrate the quality of your research via the references/citations that you include per question. You must cite all the references i.e. any internet web site, book, journal, article etc. that you have used as a source of information for your report (3 marks)
You are advised to remind yourself of the issues concerning plagiarism.
Question 2: Bluetooth technology
This question carries 20 % of the marks for this assignment.
A high school has recently begun to use Bluetooth input and output devices in association with some of its desktop computers. Imagine that you are working in this school as a network technical support. In order to introduce the Bluetooth technology to the students of the school, the schools’ principal had asked you to write a summary explaining the following factors:
Give an overview about Bluetooth technology. (4 marks)
What are the piconets and scatternets in Bluetooth? (4 marks)
Why piconets and scatternets are used in Bluetooth? (4 marks)
What are the advantages/disadvantages of piconets when compared with scatternets?
(4 marks)
3
Write your answer in such a way that it is suitable for readers in the appropriate age range, no matter what subjects they are studying. You need to use diagrams to support your answer.
Please adhere to the following guidelines for writing your summary:
Your summary should be between 200 and 300 words in length. Under-length and over-length summary will be penalized.
Your summary should include at least two figures and/or tables. Do not forget to include a caption for each figure/table and to use cross-referencing. (2 Marks)
In order to be allocated marks for your answer you must demonstrate the quality of your research via the references/citations that you include per question. You must cite all the references i.e. any internet web site, book, journal, article etc. that you have used as a source of information for your report. (2 marks)
Question 3: Optical storage devices.
This question carries 24% of the marks for this assignment.
You have studied in T215A optical storage devices. An example of optical storage devices is the blue-ray disk. Write a summary that explains the main idea behind the blue-ray disc technology. The brief should include the following items:
 What does a blue-ray disc mean? (6 marks)
 What technology is used for storing and reading data? (6 marks)
 Draw a comparison table between CDs, DVDs, and Blue-Ray discs. (8 marks)
Please adhere to the following guidelines for writing your summary:
Your summary should be between 200 and 300 words in length. Under-length and over-length summary will be penalized.
Your summary should include at least two figures and/or tables. Do not forget to include a caption for each figure/table and to use cross-referencing. (2 Marks)
In order to be allocated marks for your answer you must demonstrate the quality of your research via the references/citations that you include per question. You must cite all the references i.e. any internet web site, book, journal, article etc. that you have used as a source of information for your report. (2 marks)
4
Question 4: Numerical.
This question carries 16% of the marks for this assignment.
A student at AOU is using an internet connection that downloads at 4Mbits/s to download one of the T215A video lectures from the AOU LMS webpage. He found two different files for the same video lecture. These files are entitled “Uncompressed Video” and “Compressed Video” respectively.
a) The “Uncompressed Video” file size is 20 GBytes. How long would it take the student to download this file? Express you answer in seconds and hours. (6 marks)
b) It takes the student 120 minutes to download the “Compressed Video” file. What is the size of this “Compressed Video” file? Express your answer in bits and GBytes. (6 marks)
c) What is the compression ratio that has been used to convert the “Uncompressed Video” file to the “Compressed Video” file? (4 Marks)
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End of TMA questions
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حل واجب t215a spring 2017
استعرض الموضوع السابق استعرض الموضوع التالي الرجوع الى أعلى الصفحة 
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