Find the minimum block size of IP addresses needed to build a network?

Question

Computer networks

find the minimum ip block size required to build the network shown in the figure:

spoiler

Answer 1

We take the number of zero bits in the network mask according to CIDR
. We raise the two to a power equal to this number. Subtract two from this.
Congratulations, you are amazing.
Example:
192.168.0.0/ 30
32-30 = 2
2^2 = 4
4-2 = 2 - there are 2 hosts on the network
Another example:
10.70.0.0/ 16
32-16=16
2^16=65536
65536-2 = 65534

Answer 2

Apparently, this task should be solved in the context of the material being passed at the moment. you can answer both 6 addresses 255.255.255.248, and 126 addresses 255.255.255.128, depending on what is being studied at the moment and whether the summation has already been studied and whether it should be used for solving.