IPv4 has 32 bits and creates more than four million address spaces, but those spaces have been exhausted. So, more address space is necessary to cater to more devices usi… See more

Subnet masks work as a filter for IP addresses. With the help of the subnet mask, devices check an IP address to determine which parts are the network bits and which … See more

CIDR stands for Classless Inter-Domain Routingand is common in IPv4.Let’s cover a mini CIDR cheat sheet to complement our subnet cheat sheet. CIDR came into the picture in 1… See more

To check CIDR notation for a given subnet mask, you have to convert the subnet mask into binary and count the number of ones or "on" digits. For example: In the above table, we have thr… See more