What is NetBios, and Subnet?
NetBios: Short name for Network Basic Input Output System, an API that augments the DOS BIOS by adding special functions for local-area networks (LANs). Almost all Windows-based LANs for PCs are based on the NetBIOS. Some LAN manufacturers have even extended it, adding additional network capabilities. SubNet: A portion of a network that shares a common address component. On TCP/IP networks, subnets are defined as all devices whose IP address have the same prefix. For example, all devices with IP address that start with 100.100.100. would be part of the same subnet. Dividing a network into subnets is useful for both security and performance reasons. IP networks are divided using a subnet mask.
