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Describe the differences among short-term, medium-term, and long-term scheduling.
Short-term (CPU scheduler)-selects from jobs in memory those jobs that are ready to execute and allocates the CPU to them.
Medium-term- used especially with time-sharing systems as an intermediate scheduling level. A swapping scheme is implemented to remove partially run programs from memory and reinstate them later to continue where they left off.
Long-term (job scheduler)-verifies which jobs are brought into memory for processing.
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
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
Message passing system:- The function of message system is to permit processes to communicate with one another without the requirement to resort (option) to shared data. Commun
What are the features of Operation Research approach?
Problem: (a) Based on your experience in setting up Windows 2003 Server operating system, briefly describe the twelve different steps in which the installation is conducted du
What is input output operation ?
Q. List the four steps that are essential to run a program on a completely dedicated machine. Answer: a) Reserve machine time b) Manually load program into memory c)
describe competing process
The producer-consumermodel above has a standard human analogy of an assembly line. Humans have specialized skills, however, whereas threads running the same program do not need to
What do you mean by semaphore? Semaphore : A synchronization variable that acquires on positive integer values. Invented by the Dijkstra P (semaphore): an atomic proce
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