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Explain the different sections of a process.
Entry section
Critical section
Exit section
Remainder section
Consider a system inclusive of n processes {p0, p1,...,pn} . Every process has a called critical section, segment of code, in which the process perhaps updating a table, changing common variables, writing a file etc. The significant features of this system are that when one process is in critical section no other process is to be permitted to execute in critical section. Every process should request permission to enter its critical section. The section of code executing this request is the entry section. The critical section should be followed by an exit section and the remainder code is in the remainder section.
Define busy waiting and spinlock. When a process is in its significant section, any other process that tries to enter its critical section must loop continuously in the entry c
List and discuss the various services provided by the operating system. Program execution - system capability to load a program into memory and to run it. I/O operatio
The term Operating System (OS) is often misused. It is common, for example, for people to speak of an OS when they are in fact referring to an OS and to a set of additional applica
1. The City of Boston needs to be about 2 acres of green space per 1,000 persons. You have been hired as the GIS expert by an independent consulting company to determine where the
Determining the time quantum for a job is a critical task. Given the assumptions that the average switching time between processes is s, and the average amount of time an I/O bo
TURNAROUND TIME
#include #include #include #include #include int main(void) { int pchan[2], pid, rval, cvar; char buf[20]; if (pipe(pchan) == -1){
Q. What are the major differences between capability lists and access lists? Answer: An access list is a list for each object consisting of the domains with a nonempty set of
What is logical address space and physical address space? The set of all logical addresses formed by a program is known as a logical address space; the set of all physical addr
Briefly discuss on I/O hardware? A controller is a collection of electronics that can operate a port, a bus, or a device. A serial-port controller is an easy controller. It is
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