My Subnet Mask. Subnet mask is used by the computer and router to determine the network and host portion of the IP address. Routers accomplish this by assigning subnet masks, a number that indicates where to look in the IP Networks are broken up into subnetworks to allow for faster data transfer, and easier management.
Subnet mask is used by the computer and router to determine the network and host portion of the IP address. Determine number of hosts, broadcast address and host class. By looking at the IP address alone, especially now with classless.
The term subnet and subnetting is sort of a generic term that encapsulates breaking the entire IP Subnetting and Masks.
Since the bits that identify the subnet are specified by a bitmask, they need not be adjacent in the However, we recommend that the subnet bits be contiguous and located as the most significant bits.
A subnet mask is basicly a way to compare two IP addresses to check whether they are on the same network (subnet). A subnet mask is selected by the network administrator to divide a network into smaller Edit: A sysadmin will assign a subnet mask to each IP address based on the administrative requirements. Before we discuss how to implement it it is useful to understand why.