If the range of IP 172.16.0.0/12 is class B , why can I use the subnet mask 255.255.255.0 in this range? - Quora
![David Bombal on Twitter: "Peter is confused about something in Windows 10. Why does Windows automatically add subnet masks of different numbers when he configures a PC with an IP address? 10.1.1.1 David Bombal on Twitter: "Peter is confused about something in Windows 10. Why does Windows automatically add subnet masks of different numbers when he configures a PC with an IP address? 10.1.1.1](https://pbs.twimg.com/media/D0Al_vMWwAUnWBa.jpg)
David Bombal on Twitter: "Peter is confused about something in Windows 10. Why does Windows automatically add subnet masks of different numbers when he configures a PC with an IP address? 10.1.1.1
![SOLVED: (Using the IP address and subnet mask, write out the network address) 188.10.18.2 (IP Address) 255.255.0.0 (Subnet Mask) 188.10.0.0 ( Network Address) 10.10.48.80 (IP Address) 255.255.255.0 (Subnet Mask) 10.10.48.0 Network Address) 192.149 ... SOLVED: (Using the IP address and subnet mask, write out the network address) 188.10.18.2 (IP Address) 255.255.0.0 (Subnet Mask) 188.10.0.0 ( Network Address) 10.10.48.80 (IP Address) 255.255.255.0 (Subnet Mask) 10.10.48.0 Network Address) 192.149 ...](https://cdn.numerade.com/ask_images/d7d905ed286045f7b5b30473e65afe87.jpg)