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What is the basic approach of page replacement?
If no frame is free is available, find one that is not presently being used and free it. A frame can be freed by writing its contents to swap space, and changing the page table to show that the page is no longer in memory. Now the freed frame can be used to hold the page for which the process faulted.
Scalability : Scalability is the competence of the system to adapt to increased service load. A scalable system will respond more gracefully to increased load than a non-sc
Q. Give the reasons why Windows XP, Solaris and Linux implement multiple locking mechanisms. Explain the circumstances under which they use mutexes, spinlocks, semaphores, adaptiv
Q. Presume that a distributed system is susceptible to server failure. What mechanisms would be needed to guarantee the exactly once semantics for execution of RPCs? Ans
What is a Dispatcher? The dispatcher is the module that gives control of the CPU to the process selected by the short- term scheduler. This function includes: Switching
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What is a file? A file is a named collection of related information that is recorded on secondary storage. A file having either programs or data. A file has particular "structu
1. How is reliability enhanced with the microkernel approach to system design? 2. In a virtual machine design where guest operating systems are independent virtual machines sup
Identifying parallelism A formal way to identify parallelism in an activity is to draw a task dependence graph in a directed graph in which each vertex represents a task to
___paging fecthces a page only when needed
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