NOS stand of Network Operating System. It is the group of programs that manage the resources on the network and allows multiple computers to communicate, share files and hardware devices with one another.
- It controls access to network resources such files and provides certain administrative functions, including security.
- Some network operating systems are:
- Windows NT
- Windows Server 2003/2008
- Windows XP
- Novel Netware
- Sun Solaris
- IBM OS/2