What is Network Operating System ? Functions of NOS, Advantages & Disadvantages of NOS.

 Network Operating System

An operating system is an intermediary between users and computer hardware. It provides users an environment in which a user can execute programs conveniently and efficiently.

Network operating system  (NOS) runs on a server and provides server the capability to manage data, users, groups, security, applications, and other networking functions.

The primary purpose of the network operating system is to allow shared  file and printer access among multiple computers in a network. Examples of a networking operating systems are Microsoft Windows Server 2008, UNIX, Linux, NetWare etc. 

Functions of NOS

1. Monitoring the system and security, so as to provide security against  viruses, hackers, and data corruption.
2. Enabling and managing  access to files on remote systems, and granting access to users.
3. Granting access to remote applications and resources, such as the Internet.
4. Providing access to remote devices such as printers, etc.
5. Providing basic network administration utilities (such as SNMP), enabling an administrator to perform tasks involving managing network resources and users.

Advantages of Network Operating System

1. Centralized servers are highly stable.
2. Security is server managed.
3. Remote access to servers is possible from different locations and types of systems.
4. Upgrades to new technogies and hardware can be easily integrated into the system.

Disadvantages of Network Operating System

1. Regular maintenance and updates are required.
2. HIgh cost of buying and running server.
3. Dependency on a central location for most operations.