You are a network planner tasked with developing an IP structure for the following networks.

The IP space is to be assigned sequentially from the lowest to the highest address. The largest

subnet is to be assigned first then followed in turn by the next largest subnet until they are all

assigned. The answers are to be put into the appropriate boxes in the table. You have the

address space $123\mathrm{.}97\mathrm{.}80\mathrm{.}0/21.$ The networks are listed below:

Network A: $463$

Network B: $21$

Network C: $75$

Network D: $481$

Network E: $96$

Range of unused addresses: