If the NetBIOS Node type is not specifically designated by a DHCP server, Windows NT-based computers (Windows NT, Windows 2000, Windows XP, Windows Server 2003, ...) choose from among the following:
1 - A b-node system uses broadcasts.
2 - A p-node system only uses point-to-point name queries to a WINS server.
4 - A m-node system first broadcasts, then queries WINS.
8 - A h-node system first queries WINS, then broadcasts.
If the NodeType Value Name at HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Netbt\Parameters exists, it takes precedence over the DhcpNodeType Value Name. If neither Value Names exist, h-node will be used if a WINS server is configured, and b-node will be used if WINS is not configured.
If these methods fail, resolution will be tried through LMHOSTS and/or DNS.