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What is process control block?
Every process is represented in the OS by a process control block. It has many pieces of information associated with an exact process.
How many disk operations are needed to fetch the i-node for the file /usr/ast/courses/os/handout.t? Assume that the i-node for the root directory is in memory, but nothing else alo
Q. What kinds of services does the process manager provide? Define local procedure call? Answer: The process manager offers services for creating and deleting and using proce
Define multithreading The proficiency of an operating system to execute different parts of a program called threads simultaneously is called as multithreading. A thread is a fl
Direct memory access Many computers avoid burdening the main CPU with programmed I/O by offloading sine if this work to a special-purpose processor known as a direct memory add
Q. Distinguish among a STREAMS driver and a STREAMS module? Answer: The STREAMS driver controls the physical device that could be involved in a STREAMS operation. The STREAMS
Write note on process, process state? A process is in excess of the program code which is sometimes known as text section. It as well includes the current activity as represent
summary of what operating system do
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Inverted page table In page table the page table has one entry for every page that the process is using. The operating system must translate this reference into a physical memo
mention the three problems that mat be caused by wrong initialization and placement of wait() and signal()operations in the use of semaphore
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