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Define System Call
A system call is a request that is made by any program to the operating system for carrying out tasks - picked from a predefined set - which the said program does not have needed authorizations to execute in its own flow of execution. System calls offer the interface among a process and the operating system. Several operations interacting with the system need permissions not available to a user level process, for example I/O performed with a device present on the system or any form of communication with other processes needs the use of system calls.
What is the use of FIFOs in client-server applications
Introduction of linux
The optimal replacement policy, called OPT, is to evict the page which will be accessed farthest into the future. Since we can't predict the future precisely, we can't implement OP
An operating system act as an intermediary between user of a computer and computer hardware. The objective of an operating system is to provide an environment in that a user can ex
how fat file system is organised
what if we need the portion from a text based on some keyword. For eg. My file is like below, ------------------------------------------------ Order=[ 1 2 3 4 5 Order=[ 6 7 8 9
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
What is bounded buffer
what branch of goverment were the federal courts are?
The term ‘page traffic’ explains Page traffic’ explains the movement of pages in and out of memory.
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