THE HUMAN IMMUNE SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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executes first the job that last entered the queue
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executes first the job that first entered the queue
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execute first the job that has been in the queue the longest
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executes first the job with the least processor needs
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Detailed explanation-1: -FIFO is an abbreviation for first in, first out. It is a method for handling data structures where the first element is processed first and the newest element is processed last.
Detailed explanation-2: -The SJF algorithm executes first the job.
Detailed explanation-3: -The FIFO algorithm is used in the paging method for memory management in an operating system that decides which existing page needs to be replaced in the queue. FIFO algorithm replaces the oldest (First) page which has been present for the longest time in the main memory.
Detailed explanation-4: -Explanation: In FIFO page replacement algorithm, when a page is to be replaced, the oldest page is chosen and replaced at the tail of the queue.
Detailed explanation-5: -First In First Out (FIFO) page replacement algorithm – In this algorithm, operating system keeps track of all pages in the memory in a queue, oldest page is in the front of the queue. When a page needs to be replaced page in the front of the queue is selected for removal.