A block of addresses is granted to a small organization. We know that one of the addresses and it is related to your student ID. For example, if your student ID is 1013298 then the known address is 172.18.3.98/20. 3.1) What are the first and the last addresses of this block? 3.2) Determine the number of addresses granted to this small organization. 3.3) The network administrator of this small organization wants to create four subnets. Determine the subnet mask, the address of each subnet, the range of IP addresses in each subnet, and the broadcast address of each subnet. 3.4) Find the number of addresses in each subnet