copy on write in virtual memory, Operating System

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how copy on write on pages when many process works at a same time?

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Q. Several CPU-scheduling algorithms are parameterized for instance the RR algorithm requires a parameter to indicate the time slice. Multilevel response queues require parameters

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What is a buddy system? We are dividing the memory as powers of two therefore the division will be 2, 4, 8, 16, 32, 64, 128, 256...i.e. in powers of 2 as well as we are selecti

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How does an operating system make multiprogramming possible by using single processor?

Explain c-scan , LOOK o Like SCAN except stops moving inwards (or outw...

LOOK o Like SCAN except stops moving inwards (or outwards) when no more requests in that direction exist. C-SCAN (circular scan) o Moves inwards servicing requests u

Processes, draw a state diagram showing the transissions of a process from ...

draw a state diagram showing the transissions of a process from creation to termination

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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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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.

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How is memory management done using bit maps? A bit map is here in this we signify the bit value as 0 or 1. 1-hole 0-process In this we are able to represent the proce

Interprocess communication, Now we consider the following questions: how ca...

Now we consider the following questions: how can the parent process communicate with its child? Or how can children processes communicate with other children? The exact answer depe

Networking protocols, Modern networks are not implemented as a single piece...

Modern networks are not implemented as a single piece of software; that would render the task of dealing with multiple technologies and manufacturers virtually impossible. The solu

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