BISY2002 Information Systems Networking Essentials XXXXXXXXXXTutorial 3 XXXXXXXXXXTotal Marks = 15 Submission guidelines: • Deadline for submission on Moodle is by 5pm Friday 29th May, 2020. • You...

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BISY2002 Information Systems Networking Essentials Tutorial 3 Total Marks = 15 Submission guidelines: • Deadline for submission on Moodle is by 5pm Friday 29th May, 2020. • You must submit a word document that provides answers to the questions given below. Your answers must be concise and brief. • You can use online material present on the Internet in relevant research articles/books, however, you have to cite them in proper APA format. • Remember not to copy/paste anything directly from above mentioned resources, you should provide answer to the questions in your own words. • Avoid any sort of plagiarism (Do not copy anything from your class fellows). • This tutorial carries 7.5% weightage. Question 1: Host A with IP address 100.10.10.2 and MAC address AA:AA:AA:AA:AA:AA sends a packet to a Host B located in the internet. The IP address and MAC address of Host B are 150.10.10.5 and BB:BB:BB:BB:BB:BB, respectively. The default gateway of host A is router R1 which is further connected to the router of the ISP (R_ISP). Note that R1 has one interface connected to Host A and another interface connected to R_ISP. The IP addresses and MAC addresses of all interfaces of R1 and R_ISP are shown in the figure below. BISY2002 Information Systems Networking Essentials Answer the following questions (4 marks) a) In order to communicate with Host B, Host A sends a packet to R1. What are the source and destination IP addresses, and source and destination MAC addresses in the packet transmitted by the Host A to R1? (0.5*4 = 2 marks) b) The packet above (in part a) now traverses from R1 to R_ISP. What are the source and destination IP addresses, and source and destination MAC addresses now? (0.5*4 = 2 marks) Question 2: Answer the questions regarding the given topology. Router A and Router B have 30 PCs and 14 PCs connected to them, respectively. The IP address space given to you is 192.168.10.0/26. (8 marks) BISY2002 Information Systems Networking Essentials I. Write Subnet Mask, Network ID, Broadcast ID and host address range for Router A Subnet. You must clearly explain all the steps involved otherwise marks will be deducted. (4 marks) II. Write Subnet Mask, Network ID, Broadcast ID and host address range for Router B Subnet. You must clearly explain all the steps involved otherwise marks will be deducted. (4 marks) Question 3: What is a Distributed Denial of Service attack (DDoS)? Briefly explain the TCP SYN DDoS attack (1.5+1.5 = 3 marks)