A network operating system is the software on a computer that allows clients to access resources. Technically, any client operating system including Windows 95/98/ME/2000 and Macintosh OS 7, 8, 9, and X can be classified as network operating systems because they all have the ability to share resources with other users. There are severe speed and security limitations when using client operating systems as network operating systems. For the purposes of this course, we will concentrate on the operating systems that were designed specifically to provide access to resources. These operating systems include Windows NT, Windows 2000, Novell Netware, Sun Solaris, Linux, and Macintosh OS Servers.