networking - Why subnet mask for IP 10.0.1.4 is 255.255.255.0? - Super User
Subnetting and Subnet Masks Explained
DOC) Lists all Class A subnet masks | Micky MElonga - Academia.edu
IPV4 Subnetting | PDF
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
Identifying your Default Gateway Address and Subnet Mask