Objectives This assessment item relates to the course learning outcomes 1 to 7 as stated on page 3 of the course profile. Instructions 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. DO NOT copy the assignment questions with your answers, unless required. Not copying the assignment questions will reduce the similarity level on Moodle. Question 1 (1.5+1.5=3 marks) With respect to TCP/IP; a) Describe what physical, logical and port addresses are and why they are required. b) Provide a real example of a physical, logical and port address - this should be from your own computer on your own network, or a lab computer or a work computer – include details of how you obtained each of the addresses and include a screen shot displaying each address – for the port address identify the application or program that is using it. Question 2 (1+1=2 marks) An organisation has been granted a block of addresses starting with the address 220.127.116.11/22. 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 12 addresses. for each correct answer) b) How many addresses are left? Question 3 (1+1+1=3 marks) a) Provide two reasons why you think dynamically assigning IP addresses are useful? (1 mark) b) Is the IP address 192.168.12.254 a valid address for use by a computer connected directly to the Internet? Explain your answer. (1 mark) c) Is it possible to divide a class C network into 14 subnets with 15 computers connected to each sub network? Explain your answer. (1 mark) Question 4: (1+1+1+1=4 marks) A sending application has sent 1240 bytes to a receiving application using TCP. The congestion window (cwnd) is set at 200 bytes (assume it does not change for the duration). The receiving application has sent an acknowledgement number of 1180 with a receiver window (rwnd) of 120 bytes. a) Draw a diagram showing the sliding window and next byte pointer similar to the example provided below based on the details given above. b) The sending application then receives a further acknowledgment of byte 1220 with an rwnd of 100 bytes. Draw a diagram representing the new sliding window and next byte pointer. c) The sending application then sends a further 80 bytes to the receiving application, which responds soon after with an acknowledgement of byte 1300 with an rwnd of 80 bytes. Draw a diagram representing the new sliding window and next byte pointer. d) What is the maximum amount of data the sending application can send at this time?