roles of operating systems, Operating System

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Describe Three major roles of operating systems in business computer systems

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Explain the tlssetvalue (tlsindex, Explain the TlsSetValue (TLSindex, dataP...

Explain the TlsSetValue (TLSindex, dataPtr)Function The TlsSetValue function  associates the  dataPtr passed as a parameter as local storage for the requesting thread. The asso

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Explain the concept of Reentrancy? It is a useful, memory-saving method for multiprogrammed timesharing systems. A Reentrant Procedure is one in which many users can share a si

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Most process abstractions support processes being destroyed when the program terminates, or in response to a specific kill directive. There are two common implementations, one a "p

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Buffering Messages exchanged by communication processes reside in a impermanent queue. Such a queue can be executed in three ways. Zero capacity: The queue length is 0.

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Define where a Program generation activity aims  Program generation activity aims at Automatic generation of program

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A system consists of 10 units of resource class Ru. The resource needs of three user processes P1, P2 and P3 are like this                     Using Banker's algorithm, de

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Linked list allocation using index The blocks don't have a fixed size. Pointers are utilized to point to the next block in a file. The pointers are set aside as a separate tabl

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Optimal page replacement An optimal page replacement algorithm has the least page fault rate of all algorithms. The algorithm states that a 'replace the page that will not be

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