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Define Ageing
Ageing is a method of enhancing the priority of process waiting in Queue for CPU allocation
What is an acyclic graph? A tree that has been corrupted by links to other branches, but does not have any cyclic paths in it.
Write a note on the usage of semaphores. Semaphore is a synchronization tool and it is a variable having integer values. It is accessed only by two standard atomic operations w
How free-space is managed using bit vector implementation? The free-space list is implemented as a bit map or bit vector. Each block is shown by 1 bit. If the block is free, th
List and discuss the various services provided by the operating system. Program execution - system capability to load a program into memory and to run it. I/O operatio
We are faced with three major components of the page-fault service time. 1. Service the page-fault interrupts. 2. Read in the page. 3. Restart the processes.
what is the meaning
Explain the basic method of paging method. Physical memory is divided into the fixed-sized blocks called frames. Logical memory is as well divided into blocks of the same size
What are overlays? To enable a process to be larger than the amount of memory allocated to it, overlays are used. The idea of overlays is to keep in memory only those instructi
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reason for terminating a process
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