Network operating system (NOS)
Network Operating System (NOS) is an operating system that includes
special functions for connecting computers and devices into a
local-area network (LAN) or Inter-networking. Some popular NOSs
for DOS and Windows systems include Novell Netware, Windows NT
and 2000, Sun Solaris and IBM OS/2. The Cisco IOS (Internet Operating
System) is also a Network Operating System with an focus on the
Internetworking capabilities of network devices. It is installed
in almost all Cisco network devices such as Cisco routers and
switches.
Some of the features of Network Operating System are:
- Provide basic operating system features such as support for processors,
protocols, automatic hardware detection and support multi-processing
of applications
- Security features such as authentication, authorization, logon
restrictions and access control
- Provide name and directory services
- Provide file, print, web services, back-up and replication services
- Support Internetworking such as routing and WAN ports
- User management and support for logon and logoff, remote access;
system management, administration and auditing tools with graphic
interfaces
- Clustering capabilities; fault tolerant and high availability
systems
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