(b) An ISP is granted the block 18.14.64.0/20. The ISP needs to allocate addresses for 8 organisations, each with 250 addresses. Find the number of addresses in the ISP block. (1) (ii) Find the range...

Kindly answer all priority is first part

Extracted text: (b) An ISP is granted the block 18.14.64.0/20. The ISP needs to allocate addresses for 8 organisations, each with 250 addresses. Find the number of addresses in the ISP block. (1) (ii) Find the range of addresses of the ISP block. (iii) Find the number of addresses allocated to each of the four organisations. (iv) Find the range of addresses for each organisation. (v) Find the range of unallocated addresses. (c) Given the prefix 2001:d4b8:bcef:1300:/56, write down, in abbreviated format, the first address. (1) (ii) the last address. (d) Identify the address type for the following IPV6 addresses. ff02::1 (1) (ii) fe80:6034:ff:fe20:1606/64