Q) An ISP is granted a block of addresses starting with XXXXXXXXXX/16. The ISP wants to distribute these blocks to 2600 customers as follows; a) The first group has 200 medium-size businesses; each...

Q) An ISP is granted a block of addresses starting with 150.80.0.0/16. The ISP wants to distribute these blocks to 2600 customers as follows;

a) The first group has 200 medium-size businesses; each needs 128 addresses.
b) The second group has 400 small businesses; each needs 16 addresses.
c) The third group has 2000 households; each needs 4 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.