Q3: An ISP granted the block 80.70.56.0/21, the ISP needs to allocate addresses for two organizations each of 500 addresses, two organizations each with 250 addresses, and three organizations each with 50 addresses. 1- Find the number and range of addresses in the ISP block (Network and Broadcast Addresses - First and Last IP addresses in the usable range) (10 Marks) 2- Find the range of addresses for each organization and the range of the waste addresses on each range. (15 Marks)