First, thanks to Don for the wonderful presentation method!
@ 5:32 mark, Don says that the smallest subnet you can make is /28 with 14 usable IP addresses.
/28 leaves 4 bits for the hosts (thanks Wes for the subnetting training!)
4^2 = 16 - 2 (network ID and broadcast) = 14, so I'm onboard with that.
But why can we not go with /29 or /30??
/29 = 3 bits left = 6 spots to use
/30 = 2 bits left = 2 spots to use
/31 would be useless. The 1 bit left leaves two hosts which are taken up by the network ID and broadcast address.
/32 I believe is used in AWS-land to specific a specific IP address, correct?
Also, does anyone know if the SAA course will be updated to cover the SAA-C02 objectives?