COIT20261 Network Routing and Switching (Term 1, 2015)
Assessment item 1—Written Assessment
ASSESSMENT
1
Objectives
This assessment item relates to the course learning outcomes 1 to 5 as stated on page 7 of the course profile.
Instructions
Please write your answers to all questions in the ‘Template for Your Answers’ Section of this document and upload only that template. Please show all your working and steps. Please ensure that you write your answers in your own words to avoid possible plagiarism and copyright violation. You can understand the Plagiarism Procedures by following the corresponding link in the CQUniversity Policies section of the Course Profile.
Question 1 (5 marks)
Router X running RIP has the following routing table:
Destination Cost Next Router
Net1 5 A
Net2 3 B
Net3 4 C
Net4 2 D
a) Assuming no other route update message has been received, show the updated routing table after router X has received the RIP message shown below from router C after 200s:
(Net1, 2), (Net2, 2), (Net3, 2), (Net4, 1). (0.5 marks for each correct row entry)
b) Router X does not receive any update for another 90s. How many periodic, expiration and garbage collection timers are now running in router X? (1 mark for each correct answer)
Question 2 (7 marks)
An organisation has been granted a block of addresses starting with the address 172.154.60.0/22.
a) Create 3 subnets for this organisation with the first subblock of 250 addresses, the second subblock of 60 addresses and the third subblock of 10 addresses. (2 mark for each correct answer)
b) How many addresses are left? (1 mark)
Question 3 (7 marks)
Consider the following TCP header dump:
04210019 000007D0 00000641 50020800 00000000
a) What is the source port number? (1 mark)
b) What is the destination port number? (1 mark)
c) What is the sequence number? (1 mark)
d) What is the acknowledgement number? (1 mark)
e) What is the length of the header? (1 mark)
f) What is the type of the segment? (1 mark)
g) What is the window size? (1 mark)
Question 4 (15 marks)
Investigate the emerging wireless broadband services available in Australia and compile a brief report of around 1400 words. Your references may come from websites, white papers, government documents or published conference or journal papers. Your report should include brief descriptions of underlying technologies and protocols, bandwidth and QoS issues, recommended usages and the geographical areas covered as well as any other relevant information on such networks. Please ensure that you understand the term wireless broadband first before you undertake your literature research.
Your report should include only the body (about 1200 words), conclusion (about 200 words) and the reference list (Do not include the executive summary, table of contents and introduction). Use the sub-headings given in the template and include in-text references in the body of the report. Use Harvard style of referencing for the list of references and in-text references.

Marks allocation:
Body:
1. Underlying technologies and protocols. (3 marks)
2. Bandwidth and QoS. (3 marks)
3. Usages. (3 marks)
4. Geographical areas covered. (1.5 marks)
5. Any other relevant information. (1.5 marks)
Conclusion:
A well written coherent conclusion (2 marks)
References:
Adhered to Harvard reference style (1 mark)
Question 5 (6 marks)
Answer the following questions in relation to Wi-Fi Direct technology. Your answers should include in-text references and a reference list:
a) Briefly describe its purpose? (1 mark)
b) What is its transmission distance from radio to radio? (1 mark)
c) Which standard covers this technology? (1 mark)
d) What is the security method used? (1 mark)
e) Discuss whether the creation of a Wi-Fi Direct multi-hop network is possible or not (use approximately 200 words). (2 marks)

TEMPLATE FOR YOUR ANSWERS
COIT20261 Network Routing and Switching (Term 1, 2015)
Fist Name: Last Name:
SID:
Write your answers in the spaces provided.
Question Number Mark
allocated Mark earned
Question 1: (5 marks)
a)
Destination Cost Next Router
Net1
Net2
Net3
Net4
2
b)
3
Question 2: (7 marks)
a)
6
b)
1
Question 3: (7 mark)
a)
1
b)
1
c)
1
d)
1
e)
1
f) 1
g)
1
Question 4: (15 marks)
a) Underlying technologies and protocols
3
b) Bandwidth and QoS
3
c) Usages
3
d) Geographical areas covered
1.5
e) Any other relevant information
1.5
f) Conclusion
2
g) References
1
Question 5: (6 marks)
a) 1
b) 1
c) 1
d) 1
e) 2
Late submission penalty
Plagiarism penalty
Total 40