أسواق
18-10-2014, 10:40 PM
حل واجبات الجامعة العربية المفتوحة
حل واجبات الجامعه العربية المفتوحه مع الشرح
لجميع فروع الجامعة ولجميع التخصصات ولجميع المواد
حلول نموذجية مضمونة وغير مكررة - قسم خاص للتربية
KSA-Kuwait - Bahrain -Oman - Jordon -Lebanon -Egypt-Sudan
الكويت البحرين عمان الأردن لبنان مصر البحرين حائل الرياض الدمام جدة المدينة المنورة الاحساء
(.turnitin./ ) فحص التشابه وفقا لنظام الجامعة عن طريق موقع كشف التشابه
اتصل : O544321455 - OO966544321455
واتس اب: 966544321455+
ايميل : a_al_shora@hot mail.com
سكايبي : a_al_shora
حل واجب 0.5.4.4.3.2.1.4.5.5 الجامعة العربية المفتوحة
حل واجبات الجامعة العربية المفتوحة O54.4.3.2.1.4.5.5 - OO96654.4.3.2.1.4.5.5
ايميل : a_al_shora @ h.o.t.m.ail.c.o.m
سكايبي: a_al_shora
واتس اب: OO96654.4.3.2.1.4.5.5
T215A: Communication and information technologies (I)
________
Question 1 (Solved in a Group):
This question carries 25% of the marks for this assignment.
The security of a wireless LAN is very important, especially for applications hosting valuable information.
For example, networks transmitting credit card numbers for verification or storing sensitive information are definitely candidates for emphasizing security. In these cases and others, proactively safeguard your network against security attacks.
Using the internet and other resources (e.g., books and AOU e-library), write a short report explaining the following factors:
• Discuss the WEP standard (Wired alent Privacy) and explain its operation (6 marks)
• What are the limitations on using the WEP? Also discuss the solutions for these problems (6 marks)
• Discuss the state of the art technology in wireless LAN security (4 marks)
Short Report Writing:
Question 2 (Solved in a Group):
This question carries 35% of the marks for this assignment.
3G Cellular communication Systems have been proposed to replace existing 2G and 2.5G systems. Using the internet and other resources (e.g., books and AOU e-library), write a report explaining the following factors:
• Compare 2G cellular system services with 3G services and explain the features that differentiate a 3G system from a purely 2G system (6 marks)
• Explain in your report the EDGE cellular system and mention the kind of Multiple Access technique used in EDGE. Discuss whether EDGE is classified as a 2.5G or 3G system. (6 marks)
• Compare in your report the main features of CDMA2000 and WCDMA. Consider factors such as Multiple Access techniques, Data Rates, Bandwidths etc. in your comparison. (6 marks)
• Compare in your report the main features of the third generation wireless/UMTS and fourth generation (LTE) wireless technology. (6 marks)
Question 3 (To be Solved Individually):
This question carries 15% of the marks for this assignment.
1) Discuss and elaborate your own and individual contribution in solving “Ques on 1” of this TMA.
(7 Marks)
2) Discuss and elaborate your own and individual contribution in solving “Ques on 2” of this TMA. (8 Marks)
Criteria for marking
The criteria to be considered in marking:
1. Is the contribution significant?
2. Is the task distribution among group members well defined?
3. Is the English correct?
Question 4 (To be Solved Individually):
This question carries 25% of the marks for this assignment. Answer all of the following parts:
a. In the figure shown below, how much stronger is the signal from transmitter A at the car than the signal from transmitter B if dA is six times as large as dB knowing that the distances between the car and the transmiLers are over 100 m? Assume that the transmiLed power from both antennas is the same (5 marks) 4
b. Digital cameras are usually designed to use the JPEG algorithm to compress raw images into smaller files. How small would a 25 MB raw file become if it is compressed with a compression ratio of 4? (5 marks)
c. How many bits are stored in the 1024 KB file? Using an internet connection that usually downloads at 4 Mbit/s, how long would it take to download this file? (10 marks)
d. Taking the speed of the radio signal as 3×108
meters per second, calculate the time taken for a
signal to reach a GPS receiver from a GPS satellite at a position 25 000 km distant from the receiver. Assume that the speed of the signal is unchanged over the whole path length. Express your answer in milliseconds. (5 marks)
1
T215A: Communication and information technologies (I)
__________________________________________________ ____________________________
Tutor-Marked Assignment
__________________________________________________ ___________________________
Cut-off date: 24 November, 2014
__________________________________________________ ___________________________
Total Marks: 100
Important Note: This TMA consists of FOUR ques&ons. Ques&ons 1 and 2 are to
be solved in a GROUP of (2-3) students. On the other hand, ques&ons 3 and 4
should be solved INDIVIDUALLY by every student.
TMA s
Ques&on 1 (25 marks)……………………………………� �……………
Ques&on 2 (35 marks)……………………………………� �……………
Ques&on 3 (15 marks)……………………………………� �……………
Ques&on 4 (25 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.
of Student:………………………………..
Signature:…………………………………� ��……...
Date:……………………………………… …………… 2
Question 1 (Solved in a Group):
This ques on carries 25% of the marks for this assignment.
The security of a wireless LAN is very important, especially for applications hosting valuable information.
For example, networks transmitting credit card numbers for verification or storing sensitive information
are definitely candidates for emphasizing security. In these cases and others, proactively safeguard your
network against security attacks.
Using the internet and other resources (e.g., books and AOU e-library), write a short report explaining
the following factors:
• Discuss the WEP standard (Wired alent Privacy) and explain its opera&on (6 marks)
• What are the limitations on using the WEP? Also discuss the solutions for these problems
(6 marks)
• Discuss the state of the art technology in wireless LAN security (4 marks)
Short 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. (2 Marks)
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. (2 Marks)
Ensure that your report meets the ives, 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 books (Block 1 – Part 7; Block 2 – Part 7 and Block 3).
(3 Marks)
You must cite all the references i.e. any internet site, book, journal, article etc. that you
have used as a source of information for your report (2 marks)
You are advised to remind yourself of the issues concerning plagiarism.
Ques&on 2 (Solved in a Group):
This ques on carries 35% of the marks for this assignment.
3G Cellular communica&on Systems have been proposed to replace exis&ng 2G and 2.5G systems. Using
the internet and other resources (e.g., books and AOU e-library), write a report explaining the following
factors:
• Compare 2G cellular system services with 3G services and explain the features that differen&ate
a 3G system from a purely 2G system (6 marks)
• Explain in your report the EDGE cellular system and mention the kind of Multiple Access
technique used in EDGE. Discuss whether EDGE is classified as a 2.5G or 3G system. (6 marks)
3
• Compare in your report the main features of CDMA2000 and WCDMA. Consider factors such as
Multiple Access techniques, Data Rates, Bandwidths etc. in your comparison. (6 marks)
• Compare in your report the main features of the third generation wireless/UMTS and fourth
generation (LTE) wireless technology. (6 marks)
Report Writing:
Please adhere to the following guidelines for writing your report:
Your report should be between 800 and 1000 words in length. Under-length and over-length
reports will be penalized. (2 Marks)
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. (2 Marks)
Ensure that your report meets the ives, 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 books (Block 1 – Part 7; Block 2 – Part 7 and Block 3). (5 marks)
You must cite all the references i.e. any internet site, book, journal, article etc. that you
have used as a source of information for your report (2 marks)
You are advised to remind yourself of the issues concerning plagiarism.
Ques&on 3 (To be Solved Individually):
This ques on carries 15% of the marks for this assignment.
1) Discuss and elaborate your own and individual contribution in solving “Ques on 1” of this TMA.
(7 Marks)
2) Discuss and elaborate your own and individual contribution in solving “Ques on 2” of this TMA.
(8 Marks)
Criteria for marking
The criteria to be considered in marking:
1. Is the contribution significant?
2. Is the task distribution among group members well defined?
3. Is the English correct?
Ques&on 4 (To be Solved Individually):
This ques on carries 25% of the marks for this assignment. Answer all of the following parts:
a. In the figure shown below, how much stronger is the signal from transmitter A at the car than the
signal from transmitter B if dA is six times as large as dB knowing that the distances between the
car and the transmiLers are over 100 m? Assume that the transmiLed power from both antennas
is the same (5 marks) 4
b. Digital cameras are usually designed to use the JPEG algorithm to compress raw images into
smaller files. How small would a 25 MB raw file become if it is compressed with a compression
ra&o of 4? (5 marks)
c. How many bits are stored in the 1024 KB file? Using an internet connection that usually downloads
at 4 Mbit/s, how long would it take to download this file? (10 marks)
d. Taking the speed of the radio signal as 3×108
meters per second, calculate the time taken for a
signal to reach a GPS receiver from a GPS satellite at a posi&on 25 000 km distant from the
receiver. Assume that the speed of the signal is unchanged over the whole path length. Express
your answer in milliseconds. (5 marks)
***************************
End of TMA questions
Example of Reference Citation
Conti, J.P. (2010) ‘Satellites bring broadband home’, Engineering and Technology, vol. 5, no. 17, 13
November – 10 December, p 60.
حل واجبات الجامعة العربية المفتوحة
حل واجبات الجامعه العربية المفتوحه مع الشرح
لجميع فروع الجامعة ولجميع التخصصات ولجميع المواد
حلول نموذجية مضمونة وغير مكررة - قسم خاص للتربية
KSA-Kuwait - Bahrain -Oman - Jordon -Lebanon -Egypt-Sudan
الكويت البحرين عمان الأردن لبنان مصر البحرين حائل الرياض الدمام جدة المدينة المنورة الاحساء
(.turnitin./ ) فحص التشابه وفقا لنظام الجامعة عن طريق موقع كشف التشابه
اتصل : O544321455 - OO966544321455
واتس اب: 966544321455+
ايميل : a_al_shora@hot mail.com
سكايبي : a_al_shora
حل واجب 0.5.4.4.3.2.1.4.5.5 الجامعة العربية المفتوحة
حل واجبات الجامعة العربية المفتوحة O54.4.3.2.1.4.5.5 - OO96654.4.3.2.1.4.5.5
ايميل : a_al_shora @ h.o.t.m.ail.c.o.m
سكايبي: a_al_shora
واتس اب: OO96654.4.3.2.1.4.5.5
حل واجبات الجامعه العربية المفتوحه مع الشرح
لجميع فروع الجامعة ولجميع التخصصات ولجميع المواد
حلول نموذجية مضمونة وغير مكررة - قسم خاص للتربية
KSA-Kuwait - Bahrain -Oman - Jordon -Lebanon -Egypt-Sudan
الكويت البحرين عمان الأردن لبنان مصر البحرين حائل الرياض الدمام جدة المدينة المنورة الاحساء
(.turnitin./ ) فحص التشابه وفقا لنظام الجامعة عن طريق موقع كشف التشابه
اتصل : O544321455 - OO966544321455
واتس اب: 966544321455+
ايميل : a_al_shora@hot mail.com
سكايبي : a_al_shora
حل واجب 0.5.4.4.3.2.1.4.5.5 الجامعة العربية المفتوحة
حل واجبات الجامعة العربية المفتوحة O54.4.3.2.1.4.5.5 - OO96654.4.3.2.1.4.5.5
ايميل : a_al_shora @ h.o.t.m.ail.c.o.m
سكايبي: a_al_shora
واتس اب: OO96654.4.3.2.1.4.5.5
T215A: Communication and information technologies (I)
________
Question 1 (Solved in a Group):
This question carries 25% of the marks for this assignment.
The security of a wireless LAN is very important, especially for applications hosting valuable information.
For example, networks transmitting credit card numbers for verification or storing sensitive information are definitely candidates for emphasizing security. In these cases and others, proactively safeguard your network against security attacks.
Using the internet and other resources (e.g., books and AOU e-library), write a short report explaining the following factors:
• Discuss the WEP standard (Wired alent Privacy) and explain its operation (6 marks)
• What are the limitations on using the WEP? Also discuss the solutions for these problems (6 marks)
• Discuss the state of the art technology in wireless LAN security (4 marks)
Short Report Writing:
Question 2 (Solved in a Group):
This question carries 35% of the marks for this assignment.
3G Cellular communication Systems have been proposed to replace existing 2G and 2.5G systems. Using the internet and other resources (e.g., books and AOU e-library), write a report explaining the following factors:
• Compare 2G cellular system services with 3G services and explain the features that differentiate a 3G system from a purely 2G system (6 marks)
• Explain in your report the EDGE cellular system and mention the kind of Multiple Access technique used in EDGE. Discuss whether EDGE is classified as a 2.5G or 3G system. (6 marks)
• Compare in your report the main features of CDMA2000 and WCDMA. Consider factors such as Multiple Access techniques, Data Rates, Bandwidths etc. in your comparison. (6 marks)
• Compare in your report the main features of the third generation wireless/UMTS and fourth generation (LTE) wireless technology. (6 marks)
Question 3 (To be Solved Individually):
This question carries 15% of the marks for this assignment.
1) Discuss and elaborate your own and individual contribution in solving “Ques on 1” of this TMA.
(7 Marks)
2) Discuss and elaborate your own and individual contribution in solving “Ques on 2” of this TMA. (8 Marks)
Criteria for marking
The criteria to be considered in marking:
1. Is the contribution significant?
2. Is the task distribution among group members well defined?
3. Is the English correct?
Question 4 (To be Solved Individually):
This question carries 25% of the marks for this assignment. Answer all of the following parts:
a. In the figure shown below, how much stronger is the signal from transmitter A at the car than the signal from transmitter B if dA is six times as large as dB knowing that the distances between the car and the transmiLers are over 100 m? Assume that the transmiLed power from both antennas is the same (5 marks) 4
b. Digital cameras are usually designed to use the JPEG algorithm to compress raw images into smaller files. How small would a 25 MB raw file become if it is compressed with a compression ratio of 4? (5 marks)
c. How many bits are stored in the 1024 KB file? Using an internet connection that usually downloads at 4 Mbit/s, how long would it take to download this file? (10 marks)
d. Taking the speed of the radio signal as 3×108
meters per second, calculate the time taken for a
signal to reach a GPS receiver from a GPS satellite at a position 25 000 km distant from the receiver. Assume that the speed of the signal is unchanged over the whole path length. Express your answer in milliseconds. (5 marks)
1
T215A: Communication and information technologies (I)
__________________________________________________ ____________________________
Tutor-Marked Assignment
__________________________________________________ ___________________________
Cut-off date: 24 November, 2014
__________________________________________________ ___________________________
Total Marks: 100
Important Note: This TMA consists of FOUR ques&ons. Ques&ons 1 and 2 are to
be solved in a GROUP of (2-3) students. On the other hand, ques&ons 3 and 4
should be solved INDIVIDUALLY by every student.
TMA s
Ques&on 1 (25 marks)……………………………………� �……………
Ques&on 2 (35 marks)……………………………………� �……………
Ques&on 3 (15 marks)……………………………………� �……………
Ques&on 4 (25 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.
of Student:………………………………..
Signature:…………………………………� ��……...
Date:……………………………………… …………… 2
Question 1 (Solved in a Group):
This ques on carries 25% of the marks for this assignment.
The security of a wireless LAN is very important, especially for applications hosting valuable information.
For example, networks transmitting credit card numbers for verification or storing sensitive information
are definitely candidates for emphasizing security. In these cases and others, proactively safeguard your
network against security attacks.
Using the internet and other resources (e.g., books and AOU e-library), write a short report explaining
the following factors:
• Discuss the WEP standard (Wired alent Privacy) and explain its opera&on (6 marks)
• What are the limitations on using the WEP? Also discuss the solutions for these problems
(6 marks)
• Discuss the state of the art technology in wireless LAN security (4 marks)
Short 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. (2 Marks)
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. (2 Marks)
Ensure that your report meets the ives, 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 books (Block 1 – Part 7; Block 2 – Part 7 and Block 3).
(3 Marks)
You must cite all the references i.e. any internet site, book, journal, article etc. that you
have used as a source of information for your report (2 marks)
You are advised to remind yourself of the issues concerning plagiarism.
Ques&on 2 (Solved in a Group):
This ques on carries 35% of the marks for this assignment.
3G Cellular communica&on Systems have been proposed to replace exis&ng 2G and 2.5G systems. Using
the internet and other resources (e.g., books and AOU e-library), write a report explaining the following
factors:
• Compare 2G cellular system services with 3G services and explain the features that differen&ate
a 3G system from a purely 2G system (6 marks)
• Explain in your report the EDGE cellular system and mention the kind of Multiple Access
technique used in EDGE. Discuss whether EDGE is classified as a 2.5G or 3G system. (6 marks)
3
• Compare in your report the main features of CDMA2000 and WCDMA. Consider factors such as
Multiple Access techniques, Data Rates, Bandwidths etc. in your comparison. (6 marks)
• Compare in your report the main features of the third generation wireless/UMTS and fourth
generation (LTE) wireless technology. (6 marks)
Report Writing:
Please adhere to the following guidelines for writing your report:
Your report should be between 800 and 1000 words in length. Under-length and over-length
reports will be penalized. (2 Marks)
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. (2 Marks)
Ensure that your report meets the ives, 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 books (Block 1 – Part 7; Block 2 – Part 7 and Block 3). (5 marks)
You must cite all the references i.e. any internet site, book, journal, article etc. that you
have used as a source of information for your report (2 marks)
You are advised to remind yourself of the issues concerning plagiarism.
Ques&on 3 (To be Solved Individually):
This ques on carries 15% of the marks for this assignment.
1) Discuss and elaborate your own and individual contribution in solving “Ques on 1” of this TMA.
(7 Marks)
2) Discuss and elaborate your own and individual contribution in solving “Ques on 2” of this TMA.
(8 Marks)
Criteria for marking
The criteria to be considered in marking:
1. Is the contribution significant?
2. Is the task distribution among group members well defined?
3. Is the English correct?
Ques&on 4 (To be Solved Individually):
This ques on carries 25% of the marks for this assignment. Answer all of the following parts:
a. In the figure shown below, how much stronger is the signal from transmitter A at the car than the
signal from transmitter B if dA is six times as large as dB knowing that the distances between the
car and the transmiLers are over 100 m? Assume that the transmiLed power from both antennas
is the same (5 marks) 4
b. Digital cameras are usually designed to use the JPEG algorithm to compress raw images into
smaller files. How small would a 25 MB raw file become if it is compressed with a compression
ra&o of 4? (5 marks)
c. How many bits are stored in the 1024 KB file? Using an internet connection that usually downloads
at 4 Mbit/s, how long would it take to download this file? (10 marks)
d. Taking the speed of the radio signal as 3×108
meters per second, calculate the time taken for a
signal to reach a GPS receiver from a GPS satellite at a posi&on 25 000 km distant from the
receiver. Assume that the speed of the signal is unchanged over the whole path length. Express
your answer in milliseconds. (5 marks)
***************************
End of TMA questions
Example of Reference Citation
Conti, J.P. (2010) ‘Satellites bring broadband home’, Engineering and Technology, vol. 5, no. 17, 13
November – 10 December, p 60.
حل واجبات الجامعة العربية المفتوحة
حل واجبات الجامعه العربية المفتوحه مع الشرح
لجميع فروع الجامعة ولجميع التخصصات ولجميع المواد
حلول نموذجية مضمونة وغير مكررة - قسم خاص للتربية
KSA-Kuwait - Bahrain -Oman - Jordon -Lebanon -Egypt-Sudan
الكويت البحرين عمان الأردن لبنان مصر البحرين حائل الرياض الدمام جدة المدينة المنورة الاحساء
(.turnitin./ ) فحص التشابه وفقا لنظام الجامعة عن طريق موقع كشف التشابه
اتصل : O544321455 - OO966544321455
واتس اب: 966544321455+
ايميل : a_al_shora@hot mail.com
سكايبي : a_al_shora
حل واجب 0.5.4.4.3.2.1.4.5.5 الجامعة العربية المفتوحة
حل واجبات الجامعة العربية المفتوحة O54.4.3.2.1.4.5.5 - OO96654.4.3.2.1.4.5.5
ايميل : a_al_shora @ h.o.t.m.ail.c.o.m
سكايبي: a_al_shora
واتس اب: OO96654.4.3.2.1.4.5.5