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Q. Describe why SSTF scheduling tends to favour middle cylinders over the innermost and outermost cylinders.
Answer: The middle of the disk is the location having the smallest average distance to all other tracks. Therefore the disk head tends to move away from the edges of the disk. Here is one more way to think of it. The present location of the head divides the cylinders into two groups. If the head isn't in the centre of the disk and a new request arrives the new request is more probable to be in the group that includes the centre of the disk therefore the head is more likely to move in that direction.
What are the various process scheduling concepts? a) Scheduling queues with diagram b) Queuing diagram c) Schedulers d) Context switch with diagram
What is a pure demand paging? When starting implementation of a process with no pages in memory, the operating system sets the instruction pointer to the first instruction of t
Consider the following snapshot of a system, answer the following questions using the banker's algorithm: 1. What is the content of the matrix Need? Is the system in a safe stat
The hardware to support demand paging is as follows Page table: This table has the skill to mark an entry invalid though a valid-invalid bit or particular value of protectio
Question: a) What do you understand by Active directory domain in Windows Server 2008? Support your answer with a diagram. b) Distinguish between active directory trees
Q. Regard as a logical address space of eight pages of 1024 words every mapped onto a physical memory of 32 frames. a. How several bits are there in the logical address? b. H
Define a state which is not a fundamental process state Answer: Blocked state is not a fundamental process state
Q. Illustrate the function of Loader? A loader is a routine which loads an object program and prepares it for execution. There are many loading schemes: relocating, absolute an
Question 1 Discuss the following with respect to Operating Systems: Operating System Components Operating System Services Question 2 Describe the theory behind Pagin
What is dispatch latency? The time taken by the dispatcher to stop one process and begin another running is known as dispatch latency.
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