Compare Network Operating System with Distributed operating System
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Network Operating System (NOS) Distributed Operating System (DOS)
A network operating system (NOS) is a computer operating system that is designed primarily to support workstation, personal computer, and, in some instances,older terminal that are connected on a local area network. A distributed operating system is an ordinary centralized operating system but runs on multiple independent CPUs. Each computer runs as the part of global distributed OS.
Environment users are aware of the existence of multiple machines being used concurrently. Users are not aware of multiplicity of machines. The operating system provides a single system image to its users.
They are not fault tolerant. Sometimes the Performance is badly affected if certain part of the hardware starts malfunctioning. It is more reliable or fault tolerant i.e distributed operating system performs even in the partial failures.
Remote resources are accessed by either logging into the desired remote machine or transferring data from the remote machine to user's own machines. Users access remote resources in the same manner as they access local resources
Examples : Windows NT, 2000, XP, Sun Solaris, Novell's Netware Examples : Amoeba, UNIX, V, AEGIS
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