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Explain why SSTF scheduling tends to favor middle cylinders over the innermost and outermost cylinders. The center of the disk is the location having the fewest average distanc
The idea of reference counting is to maintain, for every object, the total number of references to that object, i.e. the number of "incoming" pointers. Whenever the number of refer
Q. Why High level languages need Compiler? High level languages - illustrations are COBOL, FORTRAN, PL/I andALGOL - are processed by interpreters andcompilers. A compilers is a
Define properties of Distributed operating system Distributed:- This system distributes computation among several physical processors. The processors do not share memory or a
Q. What is the basic function of Assembler ? Input to an assembler is an assembly language program. Output is an object program and information which enables the loader to prep
Q. The accelerating search for described in subsequent exercise is typical of hard-disk drives. By contrast floppy disks and several hard disks manufactured before the mid-1980s t
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Q. What merit is there in having different time-quantum sizes on different levels of a multilevel queuing system? Answer: Processes that require more frequent servicing for ins
What are the necessary conditions for deadlocks? 1. Mutual exclusion : Only one process at a time is able to use the resource. 2. Hold and wait : A process should be holdi
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
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