data communication and networking

QUESTION 4 115 MARKS a) Assume that host 1 (20.0.0.1) wishes to communicate to host 2 (20.0.0.2). Describe the process by which ARP request works to establish communication between host I to host 2 b) List the facilities that data center provides to house computer systems and associated components. c) Describe any 4 threats to computer and network security. QUESTION 5 [15 MARKS Ma nostra terre Figure 2 Figure 2 shows the physical configuration of switch Catalyst 2950 and computer connected to it. In the computer's screen is written the MAC address. a) Switch has an ability to forward the frame based on MAC address within different setting of duplex such as half duplex and full duplex. Explain with the help of diagram the difference between half duplex and full duplex. b) Describe half duplex with full duplex with appropriate examples for each. c) Computer connected to port Fa5 is sending the frame for computer connected to Fal. What should be written in the source MAC address and destination MAC part of the frame below? Preamble Source MAC address OC Destination Length Type Encapsulated End of MAC Data Frame address OA d) Based on Question 4b, list any THREE (3] feature of MAC addresses. e) Computer connected to port Fa5 is sending the frame for ALL computers connected to the switch. What should be written in the Destination MAC address of the frame