Question 1 Topology PC-A FO/6 G0/1 PC-B S1 F0/5 R1 G0/0 Figure 1 IP Address Device Interface Subnet Mask R1 G0/0 172.16.122.12 255.255.255.0 PC-A NIC 172.31.45.16 255.255.255.0 PC-B NIC 172.16.116.66 255.255.240.0 Based on the topology above, answer the questions below: (a) What is the prefix length for PC-A [1 mark] (b) Name the type of cable used in the figure 1 [2 marks] (c) What is the first and last assignable address to PC-A? [2 marks] (d) What is the network address of PC-B [2 marks] (e) Why is the subnet mask important in determining the network address? [2 marks]