What is Network operating System ?
A network operating system (NOS) is an operating system that manages network resources.
It includes special functions for connecting computers and devices into a local area network (LAN).
It manages multiple requests (inputs) that occurs simultaneously and provides the security in a multiuser environment.
It allows multiple devices to communicate and share resources with each other.
A Network Operating System runs on a server.
The Network operating system includes a number of personal computers, a printer, a server with a local network that connects them together.
Network Operating System provide security features such as authentication, logon restrictions, access control and back-up services.
Types of Network operating System
Peer-to-Peer:-
It allow users to share resources and files located on their computers.
It allow to access shared resources found on other computers.
Here, all the computers are considered equal because they all have the same capabilities to use the resources available on the network.
This networks are designed for small to medium local area networks.
In this network dedicated server or centralized server not required.
Client/Server:-
A computer network in which one centralized, powerful computer (called the server) is a hub to which many personal computers or workstations (called clients) are connected.
The clients run programs and access data that are stored on the server.
Advantages of Network operating System
Highly stable centralized servers.
Security handled through servers.
Data remotely access possible from different locations.
Disadvantages of Network operating System
Regular updates and maintenance required.
High cost of buying and running a server.
Dependency on centeralized server.