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Explain about directory structure?
Some systems keep millions of files on terabytes of disk. To manage all these data, we require organizing them. This organization is usually divided in two parts. First, disks are dividing into one or more partitions, also called as minidisks in the IBM world or volumes in the PC and Macintosh. Partitions can be thought of as virtual disks. Partitions can also store many operating systems, allowing a system to boot and run more than one.
State critical section problem? Discuss three solutions to solve the critical section problem. C-S Problem:- n processes all competing to use some shared data Every
We have stressed the need for an operating system to make efficient use of the computing hardware. When is it appropriate for the operating system to forsake this principle and to
Q. We have an OS (operating system) for a machine that uses base and limit registers however we have modified the machine to provide a page table. Can the page tables be set up to
What is Belady's anomaly When plotting on a graph the page faults versus the number of available frames. We notice that the number of faults for four frames is greater than th
Second chance Algorithm When the page is chosen the reference bit is checked to see whether it has been referenced before. If that is the case after that it is given a second c
what is data-processing cycle?
what is cpu
what is internal fragmentation?
Long term scheduling Scheduling explicitly performed when a new process is created and it determines which programs are admitted to the system for processing. Therefore it cont
Q. What are two differences among user-level threads and kernel-level threads? Under what situations is one type better than the other? Answer: (1) User-level threads are un
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