To determine the network or subnet address of an IP address
To facilitate network subdividion by identifying host and network information.
A default subnet mask gives you classful addressing on octet boundaries. A non-default subnet mask implies that you are subnetting a larger network into several smaller ones.
255.0.0.0The default subnet mask of a class A network is 255.0.0.0
That is your subnet mask.
255.255.255.0
255.0.0.0
It does not require a subnet mask.
If this is a default subnet mask, then it would be a class C subnet mask. If you are subnetting a network and this is not the default subnet mask, then it could be either a class A or class B.
The default subnet mask has a standard size. The custom subnet mask allows you to make subnets that are smaller or larger than the default.
The correct term is subnet mask instead of subnet mass. A subnet mask separates an IP address into the host address and the network address. It is a 32-bit number that can mask an IP address.
2 given subnets
255.255.255.0
255.255.255.0
A subnet mask is something that divides the IP address into a host and network. It is a very confusing thing but it will also let you see the IP address of the user.
Subnet mask for the above is 255.0.0.0
The default subnet mask would be 255.255.0.0 for a class B address.
if the ip address is 192.168.2.1 then the subnet mask should be 255.255.255.0
By changing subnet mask..from 255.255.224.0 to 255.255.240.0 Number of subnetworks increase and the number of host in each subnetwork decreases