Subnetting is essentially the modification of a single IP network to create two or more logically visible sub-sections. It entails changing the subnet mask of the local network number to produce an even number of smaller network numbers, each with a corresponding range of IP addresses. Subnetting is required when one network number needs to be distributed across multiple LAN segments. This may be the case in instances when: * A company uses two or more types of LAN technology (for example, Ethernet, Token Ring) on their network.
* Two network segments are restricted by distance limitations (for example, remote offices linked via point-to-point circuit).
* Segments need to be localized for network management reasons (accounting segment, sales segment, etc.).
* Hosts which dominate most of the LAN bandwidth need to be isolated.
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.
255.255.255.0
2 given subnets
255.255.255.0
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
Subnet mask for the above is 255.0.0.0
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
It depends on whether you are subnetting or not. If not, the default subnet mask would be 255.255.255.0
This is a network address