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Define semaphore
A semaphore is a protected abstract or variable data type that constitutes the classic method for restricting access to shared resources like shared memory in a parallel programming environment.
explain how response time are reduced by allowing time sharing on top of multiprogramming
what is dual mode operation
examples of classification of models
Discuss the risks of having a single root user
Q. Suppose an operating system maps user-level threads to the kernel utilizing the many-to-many model where the mapping is done through the use of LWPs. In addition the system allo
How can an index file be used to speed up the access in direct-access files? Have an index in memory; the index gives the key and the disk location of its corresponding record.
What is long-term, medium-term, short-term? In a batch system many processes are submitted than are able to be executed immediately. These processes are reel to a mass storage
Write socket based fortune teller server
what is application software?
Describe the differences between foreground and background processing. What advantage does background processing provide? 1. Background processes typically run with little or no
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