Microsoft Word - ITECH2301_Ass1.doc Network Architecture ITECH2301-Network Architecture and Design CRICOS Provider No. 00103D itech2301_ass1.doc- Network Architecture Assignment, Semester 1, 2020 Page...

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Microsoft Word - ITECH2301_Ass1.doc Network Architecture ITECH2301-Network Architecture and Design CRICOS Provider No. 00103D itech2301_ass1.doc- Network Architecture Assignment, Semester 1, 2020 Page 1 of 5 Due Date Week 8 on Tuesday at 23:55 Worth 20% (Marked out of 100 marks) Type Type A Assessment Objective  This assignment provides an opportunity to understand the techniques and protocols used in the layers of TCP/IP network (Internet) model  Learning Outcomes Assessed:  K3 - Explain the technologies and protocols of physical, data link, network and transport layers.  S1- Analyse data communication and networking technologies in today's Internet.  A2 - Analyse data communication and networking technologies in today's Internet. Requirements 1. Fig. 1 illustrates how a message is transmitted from the application layer to the physical layer in the Internet model of a data communication network. a. With the aid of the diagrams of header formats, explain the main purpose of all fields of the header formats of the transport, network, and data link layers protocols. For example, the main purpose of the source address and destination address of an IP Header is to provide the sender and receiver IP addresses, respectively. Note, for IP header, include IPv4 packet header format only i.e., you do not need to consider IPv6 packet header format. [15+15=30 marks] b. Use your web browser to connect to one of the following websites whose number in the number list is equal to the first non-zero digit of your student ID. Let your student ID be 32684567. Since the first digit of your student ID is 3, you need to select https://www.harvard.edu/ (3rd item) of the following list: 1. https://web.mit.edu/ 2. https://www.stanford.edu/ 3. https://www.harvard.edu/ 4. http://www.ox.ac.uk/ Network Architecture ITECH2301-Network Architecture and Design CRICOS Provider No. 00103D itech2301_ass1.doc- Network Architecture Assignment, Semester 1, 2020 Page 2 of 5 5. https://www.imperial.ac.uk/ 6. https://www.berkeley.edu/ 7. https://www.southwales.ac.uk/ 8. https://www.wisc.edu/ 9. http://umanitoba.ca/ Using the Wireshark protocol analyser, capture all packets generated in response to your request for the above web page. For a selected pair of the first HTTP request‐response lines, write the hex/decimal values of all fields of the header formats of the transport, network and data link layers protocols whatever available in your file captured by Wireshark. [15+15=30 marks] • The application Layer uses the HTTP protocol • The transport layer uses the TCP (Transmission Control) Protocol • The network layer uses The IP (Internet) Protocol • The data link layer of the LANs typically uses the Ethernet protocol • Protocol Data Units (PDUs) Fig. 1: Message transmission through layers. 2. Draw how the bit pattern 1 0 1 1 0 0 1 1 would be sent using a. Unipolar signalling [2 marks] b. Return to zero (RZ) signalling [2 marks] c. Non return to zero (NRZ) signalling [2 marks] d. Manchester encoding [5 marks] Network Architecture ITECH2301-Network Architecture and Design CRICOS Provider No. 00103D itech2301_ass1.doc- Network Architecture Assignment, Semester 1, 2020 Page 3 of 5 e. Amplitude Modulation (AM) [2 marks] f. Frequency Modulation (FM) [2 marks] g. Phase Modulation (PM) [5 marks] [Total 20 marks] N.B. You can draw the bit pattern on papers and insert them as pictures into your document. 3. Answer the following questions on media access control: a. What is media access control and why is it important? [2+2=4 marks] b. List two examples of controlled access and contention-based media access protocols and their application areas. [4+4=8 marks] [Total 12 marks] 4. Briefly describe the Web of Things (WoT). List four examples of WoT applications. [4+4=8 marks] Network Architecture ITECH2301-Network Architecture and Design CRICOS Provider No. 00103D itech2301_ass1.doc- Network Architecture Assignment, Semester 1, 2020 Page 4 of 5 Assessment Feedback ITECH 2301 Students Student Elements Maximum Marks Marks Obtained Header formats – TCP header 5 – IPv4 header 5 – Ethernet frame (header) 5 Descriptions of fields – TCP header 5 – IPv4 header 5 – Ethernet frame (header) 5 Values of HTTP request – TCP header 5 – IPv4 header 5 – Ethernet frame (header) 5 Values of HTTP response – TCP header 5 – IPv4 header 5 – Ethernet frame (header) 5 Drawings for the bit pattern – Unipolar signalling 2 – Return to zero (RZ) signalling 2 – Non return to zero (NRZ) signalling 2