NETBIOS is a programming interface that allows I/O requests 
to be sent to and received from a remote computer and it 
hides the networking hardware from applications.
	NETBEUI is NetBIOS extended user interface. A 
transport protocol designed by microsoft and IBM for the 
use on small subnets

Netbios is a transport layer protocol which provides name 
resolution for older version of windows environment


Netbeui is an application layer protocol which provides 
services for netbios