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Define FIFO Page Replacement Algorithm
This policy simply eliminates pages in the order they arrived in the main memory. By using this policy we simply remove a page based upon the time of its arrival in the memory. For instance if we comprise the reference string that is: 1, 2, 3, 4, 1, 2, 5, 1, 2, 3, 4, 5 and 3 frames (3 pages can be in memory at a time per process) after that we have 9 page faults as shown
The term ‘page traffic’ explains Page traffic’ explains the movement of pages in and out of memory.
Q. What system calls have to be implementing by a command interpreter or shell in order to start a new process? Answer: In the UNIX systems a fork system call followed by an ex
Define what an assembler is An assembler is machine dependant.
Q. Why is it important to scale up system bus and device speeds as the CPU speed increases? Answer: Consider a system which carries out 50% I/O and 50% computes. Doubling-up
What is dispatch latency? The time taken by the dispatcher to stop one process and begin another running is known as dispatch latency.
How does an operating system make multiprogramming possible by using single processor?
Determine a parser which is a variant of top-down parsing without backtracking Recursive Descend parser is a variant of top-down parsing without backtracking.
Define a public key encryption system Allows just the correct receiver to decode the data
p0A B C D A B C D A B C D 2 0 12 2012 1000 1354 0632 0014
What is reference string We evaluate an algorithm by running it on a definite string of memory reference and computing the number of page faults. The string of memory reference
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