Question One: [ ] [8 Points]

An ISP is granted a block of addresses starting with 166.77.0.0/16. The ISP wants to distribute these blocks to 1000 customers as follows:

A. The first group has 4 medium-sized businesses; each needs 128 addresses.

B. The second group has 5 small businesses; each needs 16 addresses.

C. The third group has 8 house-holds; each house-hold needs 4 addresses.

1. [6 points] Design the subblocks (first address, last address) and give the slash notation for each subblock.
2. [2 points] Find out how many addresses are still available after these allocations.