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what is it all about? why do we need? what are the types of backup? how is it done in unix?
diffenciet between least recently used and not recently used
Describe the differences between foreground and background processing. What advantage does background processing provide? 1. Background processes typically run with little or no
Q. Describe the purpose of the open() and close() operations. Answer: The open() operation notifies the system that the named file is about to become active. The c
Q. In some systems a subdirectory is able to be read and written by an authorized user just as ordinary files can be. a. Explain the protection problems that could arise. b.
Here are the conditions necessary for a deadlock to occur; note that all of them are necessary, and none is suf?cient: 1. ?nite resources: the resources are held in a mutually-e
What is Demand paging? Virtual memory is commonly executed by demand paging. In demand paging, the pager brings only those essential pages into memory instead of swapping in a
mention the three problems that mat be caused by wrong initialization and placement of wait() and signal()operations in the use of semaphore
what common event leads to the creation of a process?
Give a brief introduction about the operation of your program and show that you understand the idea behind threads and mutual exclusion variable. Why do we need to use mutual exclu
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