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Distributed Operating System

Distributed operating systems is a recent advancement in the world of
computer technology and are being widely accepted all-over the world.
Distributed operating systems use multiple central processors to serve
multiple real-time applications and multiple users. Data processing jobs are
distributed among the processors accordingly. The processors communicate
with one another through various communication lines (such as high-speed
buses or telephone lines). Processors in a distributed operating system may
vary in size and function. These processors are referred as sites, nodes,
computers, and so on.
Independent systems possess their own memory unit and CPU. These are referred as loosely coupled systems
or distributed systems. These system’s processors differ in size and function. The major benefit of working with
these types of operating system is that it is always possible that one user can access the files or software which
are not actually present on his system but on some other system connected within this network i.e., remote
access is enabled within the devices connected in that network. Examples of distributed operating systems are
LOCUS, Inferno and Amoeba.
Network Operating System

A Network operating system (NOS) runs on a server and provides the capability to manage data, users, groups,
security, applications, and other networking functions. These operating systems allow shared access of files,
printers, security, applications, and other networking functions over a small private network. One more important
aspect of Network Operating Systems is that all the users are well aware of the underlying configuration, of all
other users within the network, their individual connections, etc. Thus, these computers are known as tightly
coupled systems. Examples of NOS are Microsoft Windows Server 2003, Microsoft Windows Server 2008, UNIX,
Linux, Mac OS X, and Novell NetWare.

Mobile Operating System
A mobile operating system in smartphones, tablet PCs and
other devices helps to run applications and programs. A mobile
operating system helps typically starts up when a device
powers on, presenting a screen with icons or tiles that present information and provide application access. All
mobile operating systems are GUI and multitasking systems. Examples of mobile operating systems are Android,
iOS, and Symbian.
Some popular operating systems are:

Windows

Windows is one of the most popular operating system used all over the world. The graphical
user interface, combined with the ease of operating and features such as multi-tasking, plug
and play support for devices makes it one of the easiest operating systems to learn and use.

MacOS
MacOS is an operating system developed by Apple Inc. for their Mac series of computers. It
provides a graphical user interface that lets users interact with icons on the screen to perform
tasks. It is generally considered more robust operating system than Windows.
Linux

Linux is also a GUI operating system that has been developed from the old UNIX
operating system. It is an open source software that lets users modify and redistribute
the software for free.

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