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What is virtual file system?
A Virtual file system switch (VFS) or Virtual file system is an abstraction layer on top of a more concrete file system. The purpose of a VFS is to permit for client applications to access different kinds of concrete file systems in a uniform way. A VFS is able to for illustration be used to access local and network storage devices transparently without the client application noticing the difference. Or it is able to be used to bridge the differences in Windows, UNIX file systems and Mac OS.
When you run a program on your UNIX system, the system prepares a special environment for that program. This environment owns everything needed for the system to execute the progra
Broken data into small packets allow time division multiplexing. In TDM every packet leaves the sender and is switched on the shared interaction channel through a multiplexer. At t
In a multiprogramming and time sharing environment several users share the system simultaneously .what are two such problems?
Q. Consider a calculating environment where a unique number is associated with each process and each object in the system. Suppose that we permit a process with number n to acce
A set of methods that allow executing a program which is not completely in memory is called A set of methods that allow executing a program which is not completely in memory
What are the hardware and software requirements for virtual memory? The hardware required for virtual memory is a secondary memory and page table. The page table should have th
short note on context switching
categorize the CPU scheduling algorithms and among them explain the non-preemptive algorithms..
How is memory management done using linked lists? Each one node of the l list will have 4 fields as follows 1-this tells whether it s a hole or a process 2-starting ad
FCFS (First Come, First Served) Perform operations in order requested No reordering of work queue No starvation every demand is serviced Poor performance
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