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The kernel is a program that comprises the central core of a computer operating system. It has entire control over everything that take place in the system. The kernel is the primary part of the operating system to load into memory during booting (i.e., system startup), and it remains there for the whole duration of the computer session because its services are required continuously.
1. They provide program implementation points to make programs smaller.
2. They handle errors thus the calculator does not lock up when an assembly program makes an error.
how does DMA increase system concurrency
The swapper work s on the biggest scheduling priority. Initially it will look for any sleeping process, if not get then it will see for the ready-to-run process for swapping. Bu
The term thread-safe in computer programming describes that routine or portion of the program that may be called from multiple programming threads without uncalled for interactions
Explain Wait for Graph a. Use a resource allocation graph to derive a wait-for graph. b. Wait-for graph acquired by making an edge from p 1 to p 2 iff p 1 is waiting for
Describe the differences between foreground and background processing. What advantage does background processing provide? 1. Background processes typically run with little or no
why we say" OS is a resource allocator" and “OS is a control program"?
What is critical section? Every process has a segment code called the critical section, in which the process may be updating tables, changing variables, writing file and etc. W
summary of what operating system do
Define Ageing Ageing is a method of enhancing the priority of process waiting in Queue for CPU allocation
Explain the Fork-join This is primitives in a higher level programming language for implementing interacting processes. The syntax is like this: fork ; join ; where
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