File System In Linux

Can anybody explain what is the file system architecture in linux it seems that in unix the max file stored is 16.3 GB irrespective of hard disk size i.e may be 2GB or 100GB. How is that possible in Unix, does linux also obeys the same concept. Kindly respond fast as i have seminar on this in linux administration course at ACCEL IT ACADEMY, Vijayawada, Andhra Pradesh, India center