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Define LRU Page Replacement Algorithm
LRU policy: LRU expands to least currently use. This policy suggests which we re- move a page whose last usage is farthest from current time. For reference string that is: 1, 2, 3, 4, 1, 2, 5, 1, 2, 3, 4, 5, we comprise the subsequent page faults.
justify the role played by the operating system in managing the process to avoid deadlock
What is a Real-time system? A Real-time system is used when inflexible time requirements have placed on the operation of processor or the flow of data so it is often used as a
How can an index file be used to speed up the access in direct-access files? Have an index in memory; the index gives the key and the disk location of its corresponding record.
Sharing segments between processes without requiring the same segment number is possible in a dynamically linked segmentation system. a. Define a system that permits sta
The Most comman difference are given below System calls are heavy. While a procedure call can generally be performed in a few system instructions, a system call needs the c
Question 1 Explain with diagram all possible states a process visits during the course of its execution Question 2 Discuss Inter-process Communication. What is critical-secti
Q. Timers could be utilized to compute the current time. Provide a little description of how this could be accomplished. Answer: A program could utilize the following ap
What is scheduler? A process migrates among the various scheduling queues throughout its life time. The OS must choose processes from these queues in some fashion. This selecti
Define request edge and assignment edge. Answer: A directed edge from process Pi to resource type R j is denoted by Pi->j; it signifies that process Pi requested an instance
Q. Explain the Concept of Process? A process is sequential program in execution. A process states the basic unit of computation for the computer. Components of process are:
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