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List disadvantages of using a single directory.
Users have no privacy. Users must be careful in choosing file names, to avoid names used by others. Users may destroy each others' work.
What is a Real-time system? A Real-time system is used when inflexible time requirements have placed on the operation of processor or the flow of data so it is often used as a
Q. You have devised a fresh page-replacement algorithm that you think may be optimal. In a few contorted test cases Belady's anomaly occurs. Is the fresh algorithm optimal? Descr
Explain the Peterson's solution for the critical section problem? In Peterson's solution two variables a) flag and b) turn are used as shared variables. If the both shared vari
describe main points of multiuser and multi tasking operating systems.
Process States A total of nine states are acknowledged by the UNIX system. They are like as follow: User running Executing
What are three conditions that a solution for the critical section problem must satisfy? The three conditions are as following:- a) Mutual exclusion :- if a process is
what is the use of valid invalid bits in paging
Operating Systems have evolved tremendously in the last few decades. The first approach for building Operating Systems, taken during the 40s through early 60s, was to allow only on
List the task regions in the Spiral model. Customer communication - In this region it is suggested to set up customer communication. Planning - All planning activities
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