An ISP is granted a block of addresses starting with 192.168.1.1. The ISP needs to distribute these addresses to three groups of customers as follows:1. The first group has 1 customers; each needs 63...

Extracted text: An ISP is granted a block of addresses starting with 192.168.1.1. The ISP needs to distribute these addresses to three groups of customers as follows:1. The first group has 1 customers; each needs 63 addresses.2. The second group has 2 customers; each needs 128 addresses.3. The third group has 4 customer ; needs 63 addresses. Design the sub blocks and give the slash notation for each sub block. Find out how many addresses are still available after these allocations.