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Briefly explain about file system implementation?
Several on-disk and in-memory structures are used to execute a file system. On disk, the file system may have information about how to boot an operating system kept there, the total number of blocks, the number and the location of free blocks, the directory structure, and individual files.
DESCRIBE OPERATING SYSTEM
Concept of Reentrancy It is a useful, memory-saving method for multiprogrammed timesharing machines. A Reentrant method is one in which multiple clients can share a singl
What are the various categories of software? System software Application software Engineering/Scientific software Embedded software Web Applications Artificial I
Define Ageing Ageing is a method of enhancing the priority of process waiting in Queue for CPU allocation
People arrive at a barber shop at the rate of one every 4.5 minutes. If the shop is full (it can hold five people altogether), 30% of the potential customers leave and come back i
approaches to identify free memory area in a heap
Write a script that uses this idea to print output similar to the following: Files in this directory that match *~ : bash-scripts.html~ chimpanzee~ countdown~ countd
perform process suspension
Define thrashing. Thrashing is the accident of high page traffic and low CPU utilization. It is observed that the cause of thrashing is an under-commitment of memory to program
Since most of the programs require a lot of memory allocation/deallocation, we expect the memory management to be fast, to have low fragmentation, make good use of locality, and be
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