In simplest way possible, describe the 'impact' of shifting an IP subnet mask bit one position to the left (assume the starting mask is 255.255.255.0) what does that change accomplish? - Quora
DOC) Lists all Class A subnet masks | Micky MElonga - Academia.edu
Subnet Cheat Sheet – 24 Subnet Mask, 30, 26, 27, 29, and other IP Address CIDR Network References