(a) i) Explain the purpose of backoff algorithm in CSMA/CD. [2 marks] ii) Describe one difference between channel partitioning and random access of multiple access protocols. [3 marks] (b) With regards to ARP table, answer the following questions: i) Refer to Figure 2 below. If Laptop-A has had some communications with all hosts EXCEPT Laptop-B, what will the ARP table of Laptop-A looks like? Draw the ARP table for Laptop-A (you can ignore the TTL). [2 Marks] Laptop-A IP: 192.168.2.5 MAC F1-F1-F1-F1-F1-F1 PC-A 0/1 Fa0/1 Fa0/0 Routero Fast Ethernet0/0 IP 192.168.1.1 MAC: 01-01-01-01-01-01 IP 192.168.1.2 MAC AA-AA-AA-AA-AA-AA Fab Fa0/4 Wireless Router IP: 192.168.2.2 MAC: 03-03-03-03-03-03 Fall Fast Ethernet 0/1: IP 192.168.2.1 MAC 02-02-02-02-02-02 Fa0/2 Fa0/3 SWO Fa0/5 IP. 192.168.2.3 MAC EE-EE-EE-EE-EE-EE PC- IP: 192.168.1.3 MAC: 88-18-18-18-B-BB Fa0/1 Fa0/2 Fao Fao Laptop-B IP: 192.168.1.5 MAC DO-DO-DD-DO-DO-DD PC-C IP: 192.168.1.4 MAC CC-CC-CC-CC-CC-CC Figure 2 ii) Explain your answer in (1). [3 Marks] (c) A data of 100100 will be sent to the receiver through a network link. Considering the generator of 1101, generate the data that will be sent by the sending host. Show your workings. [5 Marks]